Air Quality in Princeton, United States

Windy
11.8°C · 73.2% humidity
11.8°
Feels 11.8°
46
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast
27 9pm
27
27
46 12am
41
37
34 3am
32
31
30 6am
29
28
28 9am
28
27
27 12pm
27
34
34 3pm
34
34
34 6pm
34
27
AD 728×90

Air Quality Index Trend

47h · 4 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▲
46
11.02 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Princeton?

Temperature & Precipitation

PM2.5 Trend

47h · 4 stations
PM2.511.02 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
11.02
Median
11.45
Average
10.8
Low
12.1
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -4.8

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
28
Rider University, NewJersey, USA
10.2 km PM2.5: 6.7 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
33
Flemington, NewJersey, USA
22.3 km PM2.5: 7.9 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?

42 Mercerville-Hamilton Square 49 Hillsborough 41 Ewing 39 Trenton 1 North Brunswick 1 Somerset 1 East Brunswick 1 New Brunswick 1 South River 1 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 2026-06-09T04:46 UTC.