Romeoville weather in November
In November, Romeoville sees average daytime highs of 48°F and overnight lows near 33°F, with 2.5 in of precipitation across 8.3 wet days and about 9.7 hours of daylight. It is the 8th-warmest and 9th-wettest month of the year here.
Highs ease over the month, from about 53°F in the first days to 42°F by the end. The sky is clear or mostly clear about 26% of the time in November, and the air most often feels dry.
Daylight stretches from about 10 h 12 min at the start of November to 9 h 12 min by month's end. Set against the rest of the year, November is Romeoville's 7th-clearest and 2nd-windiest month. For the whole year in context, see Romeoville's year-round climate.
- Daytime high
- 48°
- 8th warmest
- Overnight low
- 33°
- 5th coldest
- Precipitation
- 2.5 in
- 8.3 wet days
- Daylight
- 9 h 36 min
- 6:49 AM – 4:26 PM
- Cloud cover
- 65%
- 7th clearest
- Wind
- 9 mph
- 2nd windiest
- Solar energy
- 2.04 kWh/m²
- Travel score
- 1.7
- out of 10
Romeoville is village in Will County, Illinois, United States.
- Density
- 818/km²
- people per km²
- Founded
- 1895
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in November
Highs ease over the month, from about 53°F in the first days to 42°F by the end.
A typical November day in Romeoville reaches about 48°F in the afternoon and slips back to 33°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 34°F and 62°F. Set against its neighbours, November runs about 14°F cooler than October and about 12°F warmer than December.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 54 | 54 | 53 | 53 | 52 | 52 | 51 | 51 | 50 | 50 | 49 | 49 | 49 | 48 | 48 | 47 | 47 | 46 | 46 | 46 | 45 | 45 | 44 | 44 | 44 | 43 | 43 | 42 | 42 | 41 |
| Avg low (°F) | 39 | 38 | 38 | 37 | 37 | 37 | 36 | 36 | 35 | 35 | 35 | 34 | 34 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 31 | 31 | 31 | 30 | 30 | 30 | 29 | 29 | 29 | 28 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 54 | 39 |
| 2 | 54 | 38 |
| 3 | 53 | 38 |
| 4 | 53 | 37 |
| 5 | 52 | 37 |
| 6 | 52 | 37 |
| 7 | 51 | 36 |
| 8 | 51 | 36 |
| 9 | 50 | 35 |
| 10 | 50 | 35 |
| 11 | 49 | 35 |
| 12 | 49 | 34 |
| 13 | 49 | 34 |
| 14 | 48 | 33 |
| 15 | 48 | 33 |
| 16 | 47 | 33 |
| 17 | 47 | 33 |
| 18 | 46 | 32 |
| 19 | 46 | 32 |
| 20 | 46 | 32 |
| 21 | 45 | 31 |
| 22 | 45 | 31 |
| 23 | 44 | 31 |
| 24 | 44 | 30 |
| 25 | 44 | 30 |
| 26 | 43 | 30 |
| 27 | 43 | 29 |
| 28 | 42 | 29 |
| 29 | 42 | 29 |
| 30 | 41 | 28 |
How November really feels in Romeoville
Once humidity and wind are folded in, November averages 0 days that feel above 90°F and 29 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in November is cold — wind chill drags the overnight "feels like" below the raw low.
Romeoville weather by month
How November compares with the rest of the year at a glance. November is the 8th-warmest and 9th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 31° / 18° | 2.1 | 8.3 | 5.9 | 9.3 | 0.0 |
| Feb | 35° / 21° | 2.0 | 7.1 | 4.6 | 10.3 | 0.0 |
| Mar | 47° / 30° | 2.7 | 10.1 | 2.9 | 11.7 | 1.4 |
| Apr | 59° / 40° | 4.4 | 12.2 | 1 | 13.1 | 4.2 |
| May | 69° / 51° | 4.4 | 12.7 | 0 | 14.3 | 5.9 |
| Jun | 79° / 61° | 4.2 | 12.2 | 0 | 15 | 6.2 |
| Jul | 83° / 66° | 3.7 | 11.4 | 0 | 14.7 | 5.8 |
| Aug | 81° / 64° | 3.7 | 10.9 | 0 | 13.7 | 6.5 |
| Sep | 74° / 56° | 2.9 | 8.3 | 0 | 12.3 | 7.1 |
| Oct | 62° / 44° | 3.1 | 9.1 | 0.1 | 10.9 | 5.3 |
| Nov | 48° / 33° | 2.5 | 8.3 | 1.3 | 9.7 | 1.7 |
| Dec | 36° / 24° | 2.2 | 8 | 4.2 | 9 | 0.0 |
Cloud cover in November
The sky is clear or mostly clear about 26% of the time in November.
Beyond those clear spells, partly cloudy skies cover about 11% of November, with mostly cloudy or overcast conditions the remaining 63%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 39 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 38 | 38 | 38 | 37 | 36 | 36 | 36 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 34 | 34 |
| Cloudier (%) | 61 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 60 | 61 | 62 | 62 | 62 | 63 | 64 | 64 | 64 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 65 | 66 | 66 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 39 | 61 |
| 2 | 40 | 60 |
| 3 | 40 | 60 |
| 4 | 40 | 60 |
| 5 | 40 | 60 |
| 6 | 40 | 60 |
| 7 | 40 | 60 |
| 8 | 40 | 60 |
| 9 | 40 | 60 |
| 10 | 40 | 60 |
| 11 | 40 | 60 |
| 12 | 39 | 61 |
| 13 | 38 | 62 |
| 14 | 38 | 62 |
| 15 | 38 | 62 |
| 16 | 37 | 63 |
| 17 | 36 | 64 |
| 18 | 36 | 64 |
| 19 | 36 | 64 |
| 20 | 35 | 65 |
| 21 | 35 | 65 |
| 22 | 35 | 65 |
| 23 | 35 | 65 |
| 24 | 35 | 65 |
| 25 | 35 | 65 |
| 26 | 35 | 65 |
| 27 | 35 | 65 |
| 28 | 35 | 65 |
| 29 | 34 | 66 |
| 30 | 34 | 66 |
Chance of precipitation in November
Romeoville gets around 2.5 in of rain and snow over 8.3 wet days in November. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 27% and peaks near 29% on the wettest days, and about 1 day brings snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 |
| Snow chance (%) | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | 10 | 10 | 11 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 28 | 2 |
| 2 | 28 | 2 |
| 3 | 27 | 2 |
| 4 | 27 | 2 |
| 5 | 27 | 2 |
| 6 | 27 | 3 |
| 7 | 27 | 3 |
| 8 | 26 | 3 |
| 9 | 26 | 3 |
| 10 | 26 | 3 |
| 11 | 26 | 3 |
| 12 | 26 | 3 |
| 13 | 26 | 4 |
| 14 | 26 | 4 |
| 15 | 26 | 4 |
| 16 | 26 | 4 |
| 17 | 27 | 5 |
| 18 | 27 | 5 |
| 19 | 27 | 5 |
| 20 | 28 | 6 |
| 21 | 28 | 6 |
| 22 | 28 | 7 |
| 23 | 29 | 7 |
| 24 | 29 | 8 |
| 25 | 29 | 8 |
| 26 | 29 | 9 |
| 27 | 29 | 9 |
| 28 | 29 | 10 |
| 29 | 29 | 10 |
| 30 | 29 | 11 |
Humidity in November
Most of November feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, November lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 96 | 96 | 97 | 98 | 98 | 98 | 98 | 98 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 |
| Comfortable (%) | 3 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Humid (%) | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | Humid (%) | |
|---|---|---|---|
| 1 | 96 | 3 | 1 |
| 2 | 96 | 3 | 1 |
| 3 | 97 | 3 | 0 |
| 4 | 98 | 2 | 0 |
| 5 | 98 | 2 | 0 |
| 6 | 98 | 2 | 0 |
| 7 | 98 | 2 | 0 |
| 8 | 98 | 2 | 0 |
| 9 | 99 | 1 | 0 |
| 10 | 99 | 1 | 0 |
| 11 | 99 | 1 | 0 |
| 12 | 99 | 1 | 0 |
| 13 | 99 | 1 | 0 |
| 14 | 99 | 1 | 0 |
| 15 | 99 | 1 | 0 |
| 16 | 99 | 1 | 0 |
| 17 | 99 | 1 | 0 |
| 18 | 99 | 1 | 0 |
| 19 | 99 | 1 | 0 |
| 20 | 99 | 1 | 0 |
| 21 | 99 | 1 | 0 |
| 22 | 99 | 1 | 0 |
| 23 | 99 | 1 | 0 |
| 24 | 99 | 1 | 0 |
| 25 | 99 | 1 | 0 |
| 26 | 99 | 1 | 0 |
| 27 | 99 | 1 | 0 |
| 28 | 99 | 1 | 0 |
| 29 | 99 | 1 | 0 |
| 30 | 99 | 1 | 0 |
Wind in November
Winds average 9 mph in November.
Across November, daily wind ranges from about 9 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Feels | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 9 | light breeze |
| 2 | 9 | light breeze |
| 3 | 9 | light breeze |
| 4 | 9 | light breeze |
| 5 | 9 | light breeze |
| 6 | 9 | light breeze |
| 7 | 9 | light breeze |
| 8 | 9 | light breeze |
| 9 | 9 | light breeze |
| 10 | 9 | light breeze |
| 11 | 9 | light breeze |
| 12 | 9 | light breeze |
| 13 | 9 | light breeze |
| 14 | 9 | light breeze |
| 15 | 9 | light breeze |
| 16 | 9 | light breeze |
| 17 | 9 | light breeze |
| 18 | 9 | light breeze |
| 19 | 9 | light breeze |
| 20 | 9 | light breeze |
| 21 | 9 | light breeze |
| 22 | 9 | light breeze |
| 23 | 9 | light breeze |
| 24 | 9 | light breeze |
| 25 | 9 | light breeze |
| 26 | 9 | light breeze |
| 27 | 9 | light breeze |
| 28 | 9 | light breeze |
| 29 | 9 | light breeze |
| 30 | 9 | light breeze |
Sunrise & sunset in November
Daylight runs from about 10 h 12 min at the start of November to 9 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 60 minutes over November. Sunrise moves from 6:31 AM to 7:05 AM, and sunset from 4:41 PM to 4:18 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.2 | 10.1 | 10.1 | 10.0 | 10.0 | 10.0 | 9.9 | 9.9 | 9.9 | 9.8 | 9.8 | 9.7 | 9.7 | 9.7 | 9.6 | 9.6 | 9.6 | 9.5 | 9.5 | 9.5 | 9.5 | 9.4 | 9.4 | 9.4 | 9.3 | 9.3 | 9.3 | 9.3 | 9.2 | 9.2 |
| Sunrise (AM) | 6:31 | 6:32 | 6:33 | 6:35 | 6:36 | 6:37 | 6:38 | 6:40 | 6:41 | 6:42 | 6:43 | 6:44 | 6:46 | 6:47 | 6:48 | 6:49 | 6:50 | 6:52 | 6:53 | 6:54 | 6:55 | 6:56 | 6:57 | 6:59 | 7:00 | 7:01 | 7:02 | 7:03 | 7:04 | 7:05 |
| Sunset (PM) | 4:41 | 4:40 | 4:39 | 4:37 | 4:36 | 4:35 | 4:34 | 4:33 | 4:32 | 4:31 | 4:30 | 4:29 | 4:28 | 4:28 | 4:27 | 4:26 | 4:25 | 4:24 | 4:24 | 4:23 | 4:23 | 4:22 | 4:21 | 4:21 | 4:20 | 4:20 | 4:20 | 4:19 | 4:19 | 4:18 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 10.2 | 6:31 | 4:41 |
| 2 | 10.1 | 6:32 | 4:40 |
| 3 | 10.1 | 6:33 | 4:39 |
| 4 | 10.0 | 6:35 | 4:37 |
| 5 | 10.0 | 6:36 | 4:36 |
| 6 | 10.0 | 6:37 | 4:35 |
| 7 | 9.9 | 6:38 | 4:34 |
| 8 | 9.9 | 6:40 | 4:33 |
| 9 | 9.9 | 6:41 | 4:32 |
| 10 | 9.8 | 6:42 | 4:31 |
| 11 | 9.8 | 6:43 | 4:30 |
| 12 | 9.7 | 6:44 | 4:29 |
| 13 | 9.7 | 6:46 | 4:28 |
| 14 | 9.7 | 6:47 | 4:28 |
| 15 | 9.6 | 6:48 | 4:27 |
| 16 | 9.6 | 6:49 | 4:26 |
| 17 | 9.6 | 6:50 | 4:25 |
| 18 | 9.5 | 6:52 | 4:24 |
| 19 | 9.5 | 6:53 | 4:24 |
| 20 | 9.5 | 6:54 | 4:23 |
| 21 | 9.5 | 6:55 | 4:23 |
| 22 | 9.4 | 6:56 | 4:22 |
| 23 | 9.4 | 6:57 | 4:21 |
| 24 | 9.4 | 6:59 | 4:21 |
| 25 | 9.3 | 7:00 | 4:20 |
| 26 | 9.3 | 7:01 | 4:20 |
| 27 | 9.3 | 7:02 | 4:20 |
| 28 | 9.3 | 7:03 | 4:19 |
| 29 | 9.2 | 7:04 | 4:19 |
| 30 | 9.2 | 7:05 | 4:18 |
Solar energy in November
Average shortwave solar energy reaching the ground each day in November, about 2.04 kWh/m².
For context, solar energy here swings from a low near 1.63 kWh/m² to a high of 6.42 kWh/m² in June across the year — November's 2.04 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 2.5 | 2.4 | 2.4 | 2.4 | 2.3 | 2.3 | 2.3 | 2.3 | 2.2 | 2.2 | 2.2 | 2.1 | 2.1 | 2.1 | 2.0 | 2.0 | 2.0 | 2.0 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.7 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.5 | Moderate |
| 2 | 2.4 | Moderate |
| 3 | 2.4 | Moderate |
| 4 | 2.4 | Moderate |
| 5 | 2.3 | Moderate |
| 6 | 2.3 | Moderate |
| 7 | 2.3 | Moderate |
| 8 | 2.3 | Moderate |
| 9 | 2.2 | Moderate |
| 10 | 2.2 | Moderate |
| 11 | 2.2 | Moderate |
| 12 | 2.1 | Moderate |
| 13 | 2.1 | Moderate |
| 14 | 2.1 | Moderate |
| 15 | 2.0 | Moderate |
| 16 | 2.0 | Moderate |
| 17 | 2.0 | Dim |
| 18 | 2.0 | Dim |
| 19 | 1.9 | Dim |
| 20 | 1.9 | Dim |
| 21 | 1.9 | Dim |
| 22 | 1.9 | Dim |
| 23 | 1.9 | Dim |
| 24 | 1.8 | Dim |
| 25 | 1.8 | Dim |
| 26 | 1.8 | Dim |
| 27 | 1.8 | Dim |
| 28 | 1.8 | Dim |
| 29 | 1.8 | Dim |
| 30 | 1.7 | Dim |
Is November a good time to visit Romeoville?
Our two travel scores rate November for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
November is a weaker month for outdoor sightseeing in Romeoville.
What to pack for Romeoville in November
From November's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In November, Romeoville sees daytime highs around 48°F and nights near 33°F. Pack a warm layer. Worth having: rain gear. About 8 days see rain.
Sea temperature near Romeoville in November
The nearest coast averages about 49°F in November — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 29 mi away) is warmest in August at about 73°F and coldest in February near 36°F.
It's comfortable for a long swim from Jul 13 to Sep 15 — about 2.1 months when the water holds above 68°F.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 38 | 36 | 36 | 39 | 45 | 57 | 70 | 73 | 68 | 58 | 49 | 42 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Refreshing | Refreshing | Refreshing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 38 | Bracing |
| Feb | 36 | Bracing |
| Mar | 36 | Bracing |
| Apr | 39 | Bracing |
| May | 45 | Bracing |
| Jun | 57 | Bracing |
| Jul | 70 | Refreshing |
| Aug | 73 | Refreshing |
| Sep | 68 | Refreshing |
| Oct | 58 | Bracing |
| Nov | 49 | Bracing |
| Dec | 42 | Bracing |
UV index in Romeoville in November
Clear-sky midday UV in November peaks around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Romeoville peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 5 | 6 | 7 | 9 | 9 | 8 | 6 | 3 | 2 | 2 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 2 | Low |
Air quality in Romeoville in November
Average fine-particle pollution (PM2.5) through the year — so you can see where November falls, not just the annual average.
Air quality in Romeoville is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 10 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 12 | 15 | 18 | 19 | 20 | 21 | 21 | 18 | 15 | 10 | 10 | 11 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 12 | Moderate |
| Feb | 15 | Moderate |
| Mar | 18 | Moderate |
| Apr | 19 | Moderate |
| May | 20 | Moderate |
| Jun | 21 | Moderate |
| Jul | 21 | Moderate |
| Aug | 18 | Moderate |
| Sep | 15 | Moderate |
| Oct | 10 | Good |
| Nov | 10 | Good |
| Dec | 11 | Good |
Where is Romeoville?
Romeoville sits at 41.6°N, 88.1°W, 620 ft above sea level, in United States. The nearest listed city is Bolingbrook, 3.7 mi away.
Topography around Romeoville
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Romeoville.
Within 2 miles, the terrain around Romeoville has only modest variations in elevation — a maximum elevation change of 167 ft around an average of 636 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 427 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 751 ft.
The land around Romeoville is covered by artificial surfaces (46%) and grassland (25%) within 2 miles, trees (34%), artificial surfaces (26%) and grassland (25%) within 10 miles, and cropland (46%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Romeoville (41.6475°, -88.0895°, elevation 620 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).