Air Quality in Princeton, United States
Windy
27.9°C · 61.0% humidity
27.9°
Feels 31.5°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Princeton's air quality — share it
AQI Forecast
34
7pm
34
25
23
10pm
25
25
25
1am
25
25
25
4am
25
25
25
7am
25
25
25
10am
25
25
25
1pm
25
25
25
4pm
25
25
Air Quality Index Trend
47h · 1 stnPrinceton's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
61.0%
Humidity
63.2 km/h
Wind W
1014.3 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.38 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Princeton?
Temperature & Precipitation
PM2.5 Trend
47h · 1 stationPM2.55.38 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
5.38
Median
5.38
Average
5.38
Low
5.38
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +1.7
What is the 7-day forecast for Princeton?
06-09
30.6° 24.7°
9.13 mm
06-10
33.7° 25.3°
10.88 mm
06-11
30.0° 24.0°
4.5 mm
06-12
31.1° 26.0°
2.0 mm
06-13
32.3° 26.2°
1.31 mm
06-14
28.3° 24.6°
38.62 mm
06-15
32.0° 23.7°
5.06 mm
Both models agree
Avg diff: 1.4°C
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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 2026-06-09T02:16 UTC.