Hillsboro weather in November
In November, Hillsboro sees average daytime highs of 51°F and overnight lows near 40°F, with 7.0 in of precipitation across 17.3 wet days and about 9.3 hours of daylight. It is the 9th-warmest and 2nd-wettest month of the year here.
Highs ease over the month, from about 55°F in the first days to 47°F by the end. The sky is clear or mostly clear about 15% of the time in November, and the air most often feels dry.
Daylight stretches from about 9 h 54 min at the start of November to 8 h 48 min by month's end. Set against the rest of the year, November is Hillsboro's 10th-clearest and 3rd-windiest month. For the whole year in context, see Hillsboro's year-round climate.
- Daytime high
- 51°
- 9th warmest
- Overnight low
- 40°
- 5th coldest
- Precipitation
- 7.0 in
- 17.3 wet days
- Daylight
- 9 h 12 min
- 7:20 AM – 4:35 PM
- Cloud cover
- 75%
- 10th clearest
- Wind
- 5 mph
- 3rd windiest
- Solar energy
- 1.41 kWh/m²
- Travel score
- 2.0
- out of 10
Hillsboro is city and county seat of Washington County, Oregon, United States.
- Density
- 1,581/km²
- people per km²
- Founded
- 1841
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in November
Highs ease over the month, from about 55°F in the first days to 47°F by the end.
A typical November day in Hillsboro reaches about 51°F in the afternoon and slips back to 40°F overnight — a 11°F spread between the day's warmth and the night's chill. On most days the high lands between 45°F and 57°F. Set against its neighbours, November runs about 11°F cooler than October and about 6°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) | 55 | 55 | 55 | 54 | 54 | 54 | 53 | 53 | 53 | 53 | 52 | 52 | 52 | 51 | 51 | 51 | 50 | 50 | 50 | 49 | 49 | 49 | 48 | 48 | 48 | 48 | 47 | 47 | 47 | 47 |
| Avg low (°F) | 42 | 42 | 42 | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 39 | 38 | 38 | 38 | 38 | 38 | 37 | 37 | 37 | 37 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 55 | 42 |
| 2 | 55 | 42 |
| 3 | 55 | 42 |
| 4 | 54 | 42 |
| 5 | 54 | 42 |
| 6 | 54 | 42 |
| 7 | 53 | 41 |
| 8 | 53 | 41 |
| 9 | 53 | 41 |
| 10 | 53 | 41 |
| 11 | 52 | 41 |
| 12 | 52 | 41 |
| 13 | 52 | 40 |
| 14 | 51 | 40 |
| 15 | 51 | 40 |
| 16 | 51 | 40 |
| 17 | 50 | 40 |
| 18 | 50 | 39 |
| 19 | 50 | 39 |
| 20 | 49 | 39 |
| 21 | 49 | 39 |
| 22 | 49 | 38 |
| 23 | 48 | 38 |
| 24 | 48 | 38 |
| 25 | 48 | 38 |
| 26 | 48 | 38 |
| 27 | 47 | 37 |
| 28 | 47 | 37 |
| 29 | 47 | 37 |
| 30 | 47 | 37 |
How November really feels in Hillsboro
Once humidity and wind are folded in, November averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
November sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Hillsboro weather by month
How November compares with the rest of the year at a glance. November is the 9th-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 46° / 36° | 6.8 | 17.1 | 1.9 | 8.9 | 1.0 |
| Feb | 49° / 37° | 5.2 | 14.2 | 1.6 | 10.1 | 1.8 |
| Mar | 54° / 39° | 5.9 | 17.3 | 0.9 | 11.6 | 2.7 |
| Apr | 59° / 42° | 4.5 | 15.6 | 0.1 | 13.2 | 3.8 |
| May | 66° / 47° | 2.7 | 10.6 | 0 | 14.7 | 5.9 |
| Jun | 72° / 52° | 1.6 | 7.2 | 0 | 15.4 | 7.1 |
| Jul | 80° / 56° | 0.4 | 2.2 | 0 | 15.1 | 8.2 |
| Aug | 80° / 57° | 0.5 | 2.5 | 0 | 13.9 | 8.1 |
| Sep | 74° / 53° | 1.7 | 6 | 0 | 12.3 | 7.7 |
| Oct | 62° / 46° | 4.2 | 11.5 | 0 | 10.7 | 5.1 |
| Nov | 51° / 40° | 7.0 | 17.3 | 0.5 | 9.3 | 2.0 |
| Dec | 45° / 36° | 8.0 | 17.5 | 2.3 | 8.6 | 0.8 |
Cloud cover in November
The sky is clear or mostly clear about 15% of the time in November.
Beyond those clear spells, partly cloudy skies cover about 12% of November, with mostly cloudy or overcast conditions the remaining 73%.
| 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 (%) | 34 | 34 | 32 | 31 | 31 | 29 | 28 | 28 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 26 | 26 | 26 | 25 | 25 | 25 |
| Cloudier (%) | 66 | 66 | 68 | 69 | 69 | 71 | 72 | 72 | 73 | 74 | 74 | 73 | 74 | 74 | 74 | 75 | 75 | 75 | 76 | 76 | 76 | 76 | 76 | 75 | 74 | 74 | 74 | 75 | 75 | 75 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 34 | 66 |
| 2 | 34 | 66 |
| 3 | 32 | 68 |
| 4 | 31 | 69 |
| 5 | 31 | 69 |
| 6 | 29 | 71 |
| 7 | 28 | 72 |
| 8 | 28 | 72 |
| 9 | 27 | 73 |
| 10 | 26 | 74 |
| 11 | 26 | 74 |
| 12 | 27 | 73 |
| 13 | 26 | 74 |
| 14 | 26 | 74 |
| 15 | 26 | 74 |
| 16 | 25 | 75 |
| 17 | 25 | 75 |
| 18 | 25 | 75 |
| 19 | 24 | 76 |
| 20 | 24 | 76 |
| 21 | 24 | 76 |
| 22 | 24 | 76 |
| 23 | 24 | 76 |
| 24 | 25 | 75 |
| 25 | 26 | 74 |
| 26 | 26 | 74 |
| 27 | 26 | 74 |
| 28 | 25 | 75 |
| 29 | 25 | 75 |
| 30 | 25 | 75 |
Chance of precipitation in November
Hillsboro gets around 7.0 in of rain and snow over 17.3 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 57% and peaks near 60% on the wettest days, and about 1 day brings snow. The odds climb toward the end of the month.
| 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 (%) | 49 | 50 | 51 | 52 | 53 | 53 | 54 | 55 | 55 | 55 | 56 | 56 | 57 | 57 | 58 | 58 | 58 | 59 | 59 | 59 | 60 | 60 | 60 | 60 | 60 | 59 | 59 | 58 | 58 | 57 |
| Snow chance (%) | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 4 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 49 | 0 |
| 2 | 50 | 0 |
| 3 | 51 | 0 |
| 4 | 52 | 0 |
| 5 | 53 | 0 |
| 6 | 53 | 1 |
| 7 | 54 | 1 |
| 8 | 55 | 1 |
| 9 | 55 | 1 |
| 10 | 55 | 1 |
| 11 | 56 | 1 |
| 12 | 56 | 1 |
| 13 | 57 | 1 |
| 14 | 57 | 1 |
| 15 | 58 | 1 |
| 16 | 58 | 2 |
| 17 | 58 | 2 |
| 18 | 59 | 2 |
| 19 | 59 | 2 |
| 20 | 59 | 2 |
| 21 | 60 | 2 |
| 22 | 60 | 2 |
| 23 | 60 | 3 |
| 24 | 60 | 3 |
| 25 | 60 | 3 |
| 26 | 59 | 3 |
| 27 | 59 | 4 |
| 28 | 58 | 4 |
| 29 | 58 | 4 |
| 30 | 57 | 4 |
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 99% 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 (%) | 97 | 97 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 98 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Comfortable (%) | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 97 | 3 |
| 2 | 97 | 3 |
| 3 | 98 | 2 |
| 4 | 98 | 2 |
| 5 | 98 | 2 |
| 6 | 98 | 2 |
| 7 | 98 | 2 |
| 8 | 98 | 2 |
| 9 | 98 | 2 |
| 10 | 98 | 2 |
| 11 | 98 | 2 |
| 12 | 98 | 2 |
| 13 | 98 | 2 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 99 | 1 |
| 18 | 99 | 1 |
| 19 | 99 | 1 |
| 20 | 99 | 1 |
| 21 | 99 | 1 |
| 22 | 99 | 1 |
| 23 | 100 | 0 |
| 24 | 100 | 0 |
| 25 | 100 | 0 |
| 26 | 100 | 0 |
| 27 | 100 | 0 |
| 28 | 100 | 0 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
Wind in November
Winds average 5 mph in November.
Across November, daily wind ranges from about 5 mph on the calmest days to 5 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) | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 5 | calm |
| 2 | 5 | calm |
| 3 | 5 | calm |
| 4 | 5 | calm |
| 5 | 5 | calm |
| 6 | 5 | calm |
| 7 | 5 | calm |
| 8 | 5 | calm |
| 9 | 5 | calm |
| 10 | 5 | calm |
| 11 | 5 | calm |
| 12 | 5 | calm |
| 13 | 5 | calm |
| 14 | 5 | calm |
| 15 | 5 | calm |
| 16 | 5 | calm |
| 17 | 5 | calm |
| 18 | 5 | calm |
| 19 | 5 | calm |
| 20 | 5 | calm |
| 21 | 5 | calm |
| 22 | 5 | calm |
| 23 | 5 | calm |
| 24 | 5 | calm |
| 25 | 5 | calm |
| 26 | 5 | calm |
| 27 | 5 | calm |
| 28 | 5 | calm |
| 29 | 5 | calm |
| 30 | 5 | calm |
Sunrise & sunset in November
Daylight runs from about 9 h 54 min at the start of November to 8 h 48 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 66 minutes over November. Sunrise moves from 6:59 AM to 7:37 AM, and sunset from 4:52 PM to 4:25 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) | 9.9 | 9.8 | 9.8 | 9.8 | 9.7 | 9.7 | 9.6 | 9.6 | 9.5 | 9.5 | 9.4 | 9.4 | 9.4 | 9.3 | 9.3 | 9.2 | 9.2 | 9.2 | 9.1 | 9.1 | 9.1 | 9.0 | 9.0 | 9.0 | 8.9 | 8.9 | 8.9 | 8.9 | 8.8 | 8.8 |
| Sunrise (AM) | 6:59 | 7:00 | 7:02 | 7:03 | 7:04 | 7:06 | 7:07 | 7:09 | 7:10 | 7:11 | 7:13 | 7:14 | 7:16 | 7:17 | 7:18 | 7:20 | 7:21 | 7:22 | 7:24 | 7:25 | 7:26 | 7:28 | 7:29 | 7:30 | 7:31 | 7:33 | 7:34 | 7:35 | 7:36 | 7:37 |
| Sunset (PM) | 4:52 | 4:51 | 4:50 | 4:48 | 4:47 | 4:46 | 4:44 | 4:43 | 4:42 | 4:41 | 4:40 | 4:39 | 4:38 | 4:37 | 4:36 | 4:35 | 4:34 | 4:33 | 4:32 | 4:31 | 4:31 | 4:30 | 4:29 | 4:28 | 4:28 | 4:27 | 4:27 | 4:26 | 4:26 | 4:25 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.9 | 6:59 | 4:52 |
| 2 | 9.8 | 7:00 | 4:51 |
| 3 | 9.8 | 7:02 | 4:50 |
| 4 | 9.8 | 7:03 | 4:48 |
| 5 | 9.7 | 7:04 | 4:47 |
| 6 | 9.7 | 7:06 | 4:46 |
| 7 | 9.6 | 7:07 | 4:44 |
| 8 | 9.6 | 7:09 | 4:43 |
| 9 | 9.5 | 7:10 | 4:42 |
| 10 | 9.5 | 7:11 | 4:41 |
| 11 | 9.4 | 7:13 | 4:40 |
| 12 | 9.4 | 7:14 | 4:39 |
| 13 | 9.4 | 7:16 | 4:38 |
| 14 | 9.3 | 7:17 | 4:37 |
| 15 | 9.3 | 7:18 | 4:36 |
| 16 | 9.2 | 7:20 | 4:35 |
| 17 | 9.2 | 7:21 | 4:34 |
| 18 | 9.2 | 7:22 | 4:33 |
| 19 | 9.1 | 7:24 | 4:32 |
| 20 | 9.1 | 7:25 | 4:31 |
| 21 | 9.1 | 7:26 | 4:31 |
| 22 | 9.0 | 7:28 | 4:30 |
| 23 | 9.0 | 7:29 | 4:29 |
| 24 | 9.0 | 7:30 | 4:28 |
| 25 | 8.9 | 7:31 | 4:28 |
| 26 | 8.9 | 7:33 | 4:27 |
| 27 | 8.9 | 7:34 | 4:27 |
| 28 | 8.9 | 7:35 | 4:26 |
| 29 | 8.8 | 7:36 | 4:26 |
| 30 | 8.8 | 7:37 | 4:25 |
Solar energy in November
Average shortwave solar energy reaching the ground each day in November, about 1.41 kWh/m².
For context, solar energy here swings from a low near 1.03 kWh/m² to a high of 6.77 kWh/m² in July across the year — November's 1.41 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) | 1.9 | 1.8 | 1.8 | 1.8 | 1.7 | 1.7 | 1.6 | 1.6 | 1.6 | 1.6 | 1.5 | 1.5 | 1.5 | 1.4 | 1.4 | 1.4 | 1.4 | 1.3 | 1.3 | 1.3 | 1.3 | 1.3 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.2 | 1.1 | 1.1 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 1.9 | Dim |
| 2 | 1.8 | Dim |
| 3 | 1.8 | Dim |
| 4 | 1.8 | Dim |
| 5 | 1.7 | Dim |
| 6 | 1.7 | Dim |
| 7 | 1.6 | Dim |
| 8 | 1.6 | Dim |
| 9 | 1.6 | Dim |
| 10 | 1.6 | Dim |
| 11 | 1.5 | Dim |
| 12 | 1.5 | Dim |
| 13 | 1.5 | Dim |
| 14 | 1.4 | Dim |
| 15 | 1.4 | Dim |
| 16 | 1.4 | Dim |
| 17 | 1.4 | Dim |
| 18 | 1.3 | Dim |
| 19 | 1.3 | Dim |
| 20 | 1.3 | Dim |
| 21 | 1.3 | Dim |
| 22 | 1.3 | Dim |
| 23 | 1.2 | Dim |
| 24 | 1.2 | Dim |
| 25 | 1.2 | Dim |
| 26 | 1.2 | Dim |
| 27 | 1.2 | Dim |
| 28 | 1.2 | Dim |
| 29 | 1.1 | Dim |
| 30 | 1.1 | Dim |
Hazard calendar for Hillsboro
In November, Hillsboro sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Hillsboro's rainy season runs October–April, when most of the year's rain falls.
Is November a good time to visit Hillsboro?
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 Hillsboro.
What to pack for Hillsboro in November
From November's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In November, Hillsboro sees daytime highs around 51°F and nights near 40°F. Pack a warm layer and rain gear. About 17 days see rain.
Sea temperature near Hillsboro in November
The nearest coast averages about 53°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 44 mi away) is warmest in August at about 59°F and coldest in February near 49°F.
The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 50 | 49 | 50 | 51 | 54 | 57 | 58 | 59 | 58 | 55 | 53 | 50 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 50 | Bracing |
| Feb | 49 | Bracing |
| Mar | 50 | Bracing |
| Apr | 51 | Bracing |
| May | 54 | Bracing |
| Jun | 57 | Bracing |
| Jul | 58 | Bracing |
| Aug | 59 | Bracing |
| Sep | 58 | Bracing |
| Oct | 55 | Bracing |
| Nov | 53 | Bracing |
| Dec | 50 | Bracing |
UV index in Hillsboro in November
Clear-sky midday UV in November peaks around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Hillsboro peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 1 (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) | 1 | 2 | 4 | 5 | 8 | 7 | 8 | 7 | 4 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | Very high | High | Very high | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Low |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 8 | Very high |
| Jun | 7 | High |
| Jul | 8 | Very high |
| Aug | 7 | High |
| Sep | 4 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Air quality in Hillsboro 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 Hillsboro is worst in September — around 22 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (January, 7 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) | 7 | 9 | 11 | 11 | 10 | 9 | 8 | 13 | 22 | 14 | 9 | 7 |
| Level | Good | Good | Good | Good | Good | Good | Good | Moderate | Moderate | Moderate | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 9 | Good |
| Mar | 11 | Good |
| Apr | 11 | Good |
| May | 10 | Good |
| Jun | 9 | Good |
| Jul | 8 | Good |
| Aug | 13 | Moderate |
| Sep | 22 | Moderate |
| Oct | 14 | Moderate |
| Nov | 9 | Good |
| Dec | 7 | Good |
Where is Hillsboro?
Hillsboro sits at 45.5°N, 123.0°W, 194 ft above sea level, in United States. The nearest listed city is Forest Grove, 5.6 mi away.
Topography around Hillsboro
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Hillsboro.
Within 2 miles, the terrain around Hillsboro has only modest variations in elevation — a maximum elevation change of 141 ft around an average of 174 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,532 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,806 ft.
The land around Hillsboro is covered by trees (44%) and artificial surfaces (25%) within 2 miles, trees (49%), grassland (21%) and cropland (21%) within 10 miles, and trees (76%) 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 Hillsboro (45.5229°, -122.9898°, elevation 194 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).