Trenton weather in January
In January, Trenton sees average daytime highs of 40°F and overnight lows near 27°F, with 3.3 in of precipitation across 9.3 wet days and about 9.5 hours of daylight. It is the 12th-warmest and 10th-wettest month of the year here.
Day-to-day highs hold fairly steady near 40°F through the month. The sky is clear or mostly clear about 30% of the time in January, and the air most often feels dry.
Daylight stretches from about 9 h 12 min at the start of January to 9 h 54 min by month's end. Set against the rest of the year, January is Trenton's 8th-clearest and 2nd-windiest month. For the whole year in context, see Trenton's year-round climate.
- Daytime high
- 40°
- 12th warmest
- Overnight low
- 27°
- 1st coldest
- Precipitation
- 3.3 in
- 9.3 wet days
- Daylight
- 9 h 24 min
- 7:25 AM – 4:51 PM
- Cloud cover
- 61%
- 8th clearest
- Wind
- 8 mph
- 2nd windiest
- Solar energy
- 2.14 kWh/m²
- Travel score
- 0.0
- out of 10
Trenton is capital city of the U.S. state of New Jersey and seat of Mercer County.
- Density
- 4,218/km²
- people per km²
- Founded
- 1719
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 40°F through the month.
A typical January day in Trenton reaches about 40°F in the afternoon and slips back to 27°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 27°F and 54°F. Set against its neighbours, January runs about 5°F cooler than December and about 3°F cooler than February.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 42 | 42 | 42 | 41 | 41 | 41 | 41 | 41 | 41 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 40 | 40 | 40 |
| Avg low (°F) | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 42 | 29 |
| 2 | 42 | 29 |
| 3 | 42 | 28 |
| 4 | 41 | 28 |
| 5 | 41 | 28 |
| 6 | 41 | 28 |
| 7 | 41 | 28 |
| 8 | 41 | 28 |
| 9 | 41 | 28 |
| 10 | 40 | 28 |
| 11 | 40 | 27 |
| 12 | 40 | 27 |
| 13 | 40 | 27 |
| 14 | 40 | 27 |
| 15 | 40 | 27 |
| 16 | 40 | 26 |
| 17 | 40 | 26 |
| 18 | 39 | 26 |
| 19 | 39 | 26 |
| 20 | 39 | 26 |
| 21 | 39 | 26 |
| 22 | 39 | 26 |
| 23 | 39 | 26 |
| 24 | 39 | 26 |
| 25 | 39 | 26 |
| 26 | 40 | 26 |
| 27 | 40 | 26 |
| 28 | 40 | 26 |
| 29 | 40 | 26 |
| 30 | 40 | 26 |
| 31 | 40 | 26 |
How January really feels in Trenton
Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in January is cold — wind chill drags the overnight "feels like" below the raw low.
Trenton weather by month
How January compares with the rest of the year at a glance. January is the 12th-warmest and 10th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 40° / 27° | 3.3 | 9.3 | 3.8 | 9.5 | 0.0 |
| Feb | 43° / 28° | 3.0 | 8.8 | 3.4 | 10.4 | 0.5 |
| Mar | 51° / 35° | 4.2 | 10.3 | 2.6 | 11.7 | 2.5 |
| Apr | 63° / 45° | 3.6 | 10.6 | 0.3 | 13 | 5.2 |
| May | 72° / 54° | 3.5 | 11.4 | 0 | 14.2 | 6.4 |
| Jun | 81° / 63° | 4.0 | 10.8 | 0 | 14.8 | 6.0 |
| Jul | 86° / 69° | 4.2 | 11.3 | 0 | 14.6 | 4.9 |
| Aug | 84° / 67° | 4.0 | 10.4 | 0 | 13.6 | 5.6 |
| Sep | 77° / 60° | 4.0 | 9.2 | 0 | 12.3 | 6.9 |
| Oct | 65° / 49° | 3.6 | 8.4 | 0.1 | 10.9 | 6.2 |
| Nov | 54° / 39° | 2.9 | 7.8 | 0.3 | 9.8 | 3.5 |
| Dec | 45° / 31° | 4.0 | 9.4 | 1.9 | 9.2 | 1.0 |
Cloud cover in January
The sky is clear or mostly clear about 30% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 14% of January, with mostly cloudy or overcast conditions the remaining 55%.
| 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 48 | 48 | 48 | 47 | 47 | 47 | 46 | 46 | 45 | 45 | 45 | 45 | 44 | 44 | 44 | 44 | 43 | 43 | 43 | 43 | 43 | 43 | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 45 | 46 |
| Cloudier (%) | 52 | 52 | 52 | 53 | 53 | 53 | 54 | 54 | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 56 | 57 | 57 | 57 | 57 | 57 | 57 | 56 | 56 | 56 | 56 | 55 | 55 | 55 | 55 | 54 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 48 | 52 |
| 2 | 48 | 52 |
| 3 | 48 | 52 |
| 4 | 47 | 53 |
| 5 | 47 | 53 |
| 6 | 47 | 53 |
| 7 | 46 | 54 |
| 8 | 46 | 54 |
| 9 | 45 | 55 |
| 10 | 45 | 55 |
| 11 | 45 | 55 |
| 12 | 45 | 55 |
| 13 | 44 | 56 |
| 14 | 44 | 56 |
| 15 | 44 | 56 |
| 16 | 44 | 56 |
| 17 | 43 | 57 |
| 18 | 43 | 57 |
| 19 | 43 | 57 |
| 20 | 43 | 57 |
| 21 | 43 | 57 |
| 22 | 43 | 57 |
| 23 | 44 | 56 |
| 24 | 44 | 56 |
| 25 | 44 | 56 |
| 26 | 44 | 56 |
| 27 | 45 | 55 |
| 28 | 45 | 55 |
| 29 | 45 | 55 |
| 30 | 45 | 55 |
| 31 | 46 | 54 |
Chance of precipitation in January
Trenton gets around 3.3 in of rain and snow over 9.3 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 30% and peaks near 33% on the wettest days, and about 4 days bring 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 31 | 31 | 31 | 32 | 32 | 32 | 33 | 33 | 33 | 33 | 33 | 33 | 32 | 32 | 32 | 31 | 31 | 30 | 30 | 29 | 28 | 28 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 27 | 27 |
| Snow chance (%) | 9 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 31 | 9 |
| 2 | 31 | 10 |
| 3 | 31 | 10 |
| 4 | 32 | 10 |
| 5 | 32 | 11 |
| 6 | 32 | 11 |
| 7 | 33 | 11 |
| 8 | 33 | 12 |
| 9 | 33 | 12 |
| 10 | 33 | 12 |
| 11 | 33 | 12 |
| 12 | 33 | 13 |
| 13 | 32 | 13 |
| 14 | 32 | 13 |
| 15 | 32 | 13 |
| 16 | 31 | 13 |
| 17 | 31 | 13 |
| 18 | 30 | 13 |
| 19 | 30 | 13 |
| 20 | 29 | 13 |
| 21 | 28 | 13 |
| 22 | 28 | 13 |
| 23 | 27 | 13 |
| 24 | 27 | 13 |
| 25 | 27 | 12 |
| 26 | 26 | 12 |
| 27 | 26 | 12 |
| 28 | 26 | 12 |
| 29 | 26 | 12 |
| 30 | 27 | 12 |
| 31 | 27 | 12 |
Humidity in January
Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 99 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Comfortable (%) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dry (%) | Comfortable (%) | |
|---|---|---|
| 1 | 99 | 1 |
| 2 | 99 | 1 |
| 3 | 99 | 1 |
| 4 | 99 | 1 |
| 5 | 99 | 1 |
| 6 | 99 | 1 |
| 7 | 99 | 1 |
| 8 | 99 | 1 |
| 9 | 99 | 1 |
| 10 | 99 | 1 |
| 11 | 99 | 1 |
| 12 | 99 | 1 |
| 13 | 99 | 1 |
| 14 | 99 | 1 |
| 15 | 99 | 1 |
| 16 | 99 | 1 |
| 17 | 99 | 1 |
| 18 | 99 | 1 |
| 19 | 99 | 1 |
| 20 | 100 | 0 |
| 21 | 100 | 0 |
| 22 | 100 | 0 |
| 23 | 100 | 0 |
| 24 | 100 | 0 |
| 25 | 100 | 0 |
| 26 | 100 | 0 |
| 27 | 100 | 0 |
| 28 | 100 | 0 |
| 29 | 100 | 0 |
| 30 | 100 | 0 |
| 31 | 100 | 0 |
Wind in January
Winds average 8 mph in January.
Across January, daily wind ranges from about 8 mph on the calmest days to 8 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| 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 | light breeze |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 8 | light breeze |
| 2 | 8 | light breeze |
| 3 | 8 | light breeze |
| 4 | 8 | light breeze |
| 5 | 8 | light breeze |
| 6 | 8 | light breeze |
| 7 | 8 | light breeze |
| 8 | 8 | light breeze |
| 9 | 8 | light breeze |
| 10 | 8 | light breeze |
| 11 | 8 | light breeze |
| 12 | 8 | light breeze |
| 13 | 8 | light breeze |
| 14 | 8 | light breeze |
| 15 | 8 | light breeze |
| 16 | 8 | light breeze |
| 17 | 8 | light breeze |
| 18 | 8 | light breeze |
| 19 | 8 | light breeze |
| 20 | 8 | light breeze |
| 21 | 8 | light breeze |
| 22 | 8 | light breeze |
| 23 | 8 | light breeze |
| 24 | 8 | light breeze |
| 25 | 8 | light breeze |
| 26 | 8 | light breeze |
| 27 | 8 | light breeze |
| 28 | 8 | light breeze |
| 29 | 8 | light breeze |
| 30 | 8 | light breeze |
| 31 | 8 | light breeze |
Sunrise & sunset in January
Daylight runs from about 9 h 12 min at the start of January to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over January. Sunrise moves from 7:27 AM to 7:16 AM, and sunset from 4:38 PM to 5:08 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.4 | 9.4 | 9.5 | 9.5 | 9.5 | 9.5 | 9.6 | 9.6 | 9.6 | 9.6 | 9.7 | 9.7 | 9.7 | 9.8 | 9.8 | 9.8 | 9.9 |
| Sunrise (AM) | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:27 | 7:26 | 7:26 | 7:26 | 7:26 | 7:25 | 7:25 | 7:25 | 7:24 | 7:24 | 7:23 | 7:23 | 7:22 | 7:21 | 7:21 | 7:20 | 7:20 | 7:19 | 7:18 | 7:17 | 7:16 |
| Sunset (PM) | 4:38 | 4:38 | 4:39 | 4:40 | 4:41 | 4:42 | 4:43 | 4:43 | 4:44 | 4:45 | 4:46 | 4:47 | 4:48 | 4:49 | 4:50 | 4:51 | 4:52 | 4:53 | 4:54 | 4:56 | 4:57 | 4:58 | 4:59 | 5:00 | 5:01 | 5:02 | 5:03 | 5:05 | 5:06 | 5:07 | 5:08 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 9.2 | 7:27 | 4:38 |
| 2 | 9.2 | 7:27 | 4:38 |
| 3 | 9.2 | 7:27 | 4:39 |
| 4 | 9.2 | 7:27 | 4:40 |
| 5 | 9.2 | 7:27 | 4:41 |
| 6 | 9.2 | 7:27 | 4:42 |
| 7 | 9.3 | 7:27 | 4:43 |
| 8 | 9.3 | 7:27 | 4:43 |
| 9 | 9.3 | 7:27 | 4:44 |
| 10 | 9.3 | 7:27 | 4:45 |
| 11 | 9.3 | 7:27 | 4:46 |
| 12 | 9.3 | 7:26 | 4:47 |
| 13 | 9.4 | 7:26 | 4:48 |
| 14 | 9.4 | 7:26 | 4:49 |
| 15 | 9.4 | 7:26 | 4:50 |
| 16 | 9.4 | 7:25 | 4:51 |
| 17 | 9.5 | 7:25 | 4:52 |
| 18 | 9.5 | 7:25 | 4:53 |
| 19 | 9.5 | 7:24 | 4:54 |
| 20 | 9.5 | 7:24 | 4:56 |
| 21 | 9.6 | 7:23 | 4:57 |
| 22 | 9.6 | 7:23 | 4:58 |
| 23 | 9.6 | 7:22 | 4:59 |
| 24 | 9.6 | 7:21 | 5:00 |
| 25 | 9.7 | 7:21 | 5:01 |
| 26 | 9.7 | 7:20 | 5:02 |
| 27 | 9.7 | 7:20 | 5:03 |
| 28 | 9.8 | 7:19 | 5:05 |
| 29 | 9.8 | 7:18 | 5:06 |
| 30 | 9.8 | 7:17 | 5:07 |
| 31 | 9.9 | 7:16 | 5:08 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 2.14 kWh/m².
For context, solar energy here swings from a low near 1.8 kWh/m² to a high of 6.01 kWh/m² in June across the year — January's 2.14 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 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 1.9 | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 | 2.1 | 2.1 | 2.1 | 2.1 | 2.2 | 2.2 | 2.2 | 2.3 | 2.3 | 2.3 | 2.4 | 2.4 | 2.4 | 2.5 | 2.5 | 2.5 | 2.6 | 2.6 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 1.9 | Dim |
| 2 | 1.9 | Dim |
| 3 | 1.9 | Dim |
| 4 | 1.9 | Dim |
| 5 | 1.9 | Dim |
| 6 | 1.9 | Dim |
| 7 | 1.9 | Dim |
| 8 | 1.9 | Dim |
| 9 | 2.0 | Dim |
| 10 | 2.0 | Dim |
| 11 | 2.0 | Moderate |
| 12 | 2.0 | Moderate |
| 13 | 2.0 | Moderate |
| 14 | 2.1 | Moderate |
| 15 | 2.1 | Moderate |
| 16 | 2.1 | Moderate |
| 17 | 2.1 | Moderate |
| 18 | 2.2 | Moderate |
| 19 | 2.2 | Moderate |
| 20 | 2.2 | Moderate |
| 21 | 2.3 | Moderate |
| 22 | 2.3 | Moderate |
| 23 | 2.3 | Moderate |
| 24 | 2.4 | Moderate |
| 25 | 2.4 | Moderate |
| 26 | 2.4 | Moderate |
| 27 | 2.5 | Moderate |
| 28 | 2.5 | Moderate |
| 29 | 2.5 | Moderate |
| 30 | 2.6 | Moderate |
| 31 | 2.6 | Moderate |
Hazard calendar for Trenton
None of Trenton's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Trenton sits in the Atlantic hurricane belt; the season peaks August–October.
Is January a good time to visit Trenton?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a weaker month for outdoor sightseeing in Trenton.
What to pack for Trenton in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Trenton sees daytime highs around 40°F and nights near 27°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.
UV index in Trenton in January
Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Trenton peaks around July 11 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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) | 2 | 3 | 5 | 6 | 8 | 8 | 8 | 6 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | High | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 8 | Very high |
| Jul | 8 | Very high |
| Aug | 6 | High |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Trenton in January
Average fine-particle pollution (PM2.5) through the year — so you can see where January falls, not just the annual average.
Air quality in Trenton is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 9 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) | 11 | 13 | 14 | 14 | 16 | 17 | 18 | 15 | 13 | 10 | 9 | 10 |
| Level | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 13 | Moderate |
| Mar | 14 | Moderate |
| Apr | 14 | Moderate |
| May | 16 | Moderate |
| Jun | 17 | Moderate |
| Jul | 18 | Moderate |
| Aug | 15 | Moderate |
| Sep | 13 | Moderate |
| Oct | 10 | Good |
| Nov | 9 | Good |
| Dec | 10 | Good |
Where is Trenton?
Trenton sits at 40.2°N, 74.7°W, 56 ft above sea level, in United States. The nearest listed city is Mercerville-Hamilton Square, 3.7 mi away.
Topography around Trenton
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Trenton.
Within 2 miles, the terrain around Trenton has only modest variations in elevation — a maximum elevation change of 135 ft around an average of 59 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 515 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,535 ft.
The land around Trenton is covered by artificial surfaces (53%) and trees (32%) within 2 miles, trees (56%) within 10 miles, and trees (62%) 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 Trenton (40.2171°, -74.7429°, elevation 56 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).