Air Quality in Princeton, United States

Windy
11.8°C · 73.2% humidity
11.8°
Feels 11.8°
53
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
5 stations

Nearby Monitoring Stations

AQI Forecast
27 8pm
27
27
53 11pm
46
40
37 2am
34
32
31 5am
30
29
28 8am
28
28
27 11am
27
27
34 2pm
34
34
34 5pm
34
34
AD 728×90

Air Quality Index Trend

47h · 7 stn

Princeton's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

73.2%
Humidity
48.8 km/h
Wind W
1002.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
53
12.88 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Princeton?

Temperature & Precipitation

PM2.5 Trend

47h · 7 stations
PM2.512.88 µg/m³ ✓ WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (5 stations within 25 km)
12.88
Median
10.1
Average
4.6
Low
18.3
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -6.6

What is the 7-day forecast for Princeton?

06-09
32.2° 11.8°
0.19 mm
06-10
24.2° 18.4°
17.19 mm
06-11
24.2° 12.7°
06-12
20.4° 17.2°
17.12 mm
06-13
31.3° 17.4°
0.13 mm
06-14
25.3° 16.7°
7.81 mm
06-15
23.8° 12.7°
0.06 mm
Both models agree Avg diff: 7.0°C

Where are air quality stations near Princeton?

27
Rider University, NewJersey, USA
10.2 km PM2.5: 6.5 µg/m³
23
Rider University, NewJersey, USA
10.2 km PM2.5: 5.5 µg/m³
13
Rider University, NewJersey, USA
10.2 km PM2.5: 3.1 µg/m³
33
Rider University, NewJersey, USA
10.2 km PM2.5: 7.9 µg/m³
33
Flemington, NewJersey, USA
22.3 km PM2.5: 7.9 µg/m³
21
Flemington, NewJersey, USA
22.3 km PM2.5: 5.0 µg/m³
24
Flemington, NewJersey, USA
22.3 km PM2.5: 5.8 µg/m³
43
Flemington, NewJersey, USA
22.3 km PM2.5: 10.3 µg/m³
34
Flemington, NewJersey, USA
22.3 km PM2.5: 8.2 µg/m³
15
Rutgers University, NewJersey, USA
23.2 km PM2.5: 3.6 µg/m³

What cities are near Princeton?

56 Mercerville-Hamilton Square 38 Hillsborough 55 Ewing 54 Trenton 22 North Brunswick 22 Somerset 22 East Brunswick 22 New Brunswick 22 South River 21 Old Bridge
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T03:41 UTC.