Air Quality in Cambridge, United States
Drizzle
19.2°C · 51.1% humidity
19.2°
Feels 19.2°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
4 stations
Nearby Monitoring Stations
Cambridge's air quality — share it
AQI Forecast
25
2pm
25
27
22
5pm
21
22
23
8pm
24
24
24
11pm
27
27
27
2am
27
27
27
5am
34
27
27
8am
24
24
24
11am
24
24
Air Quality Index Trend
46h · 6 stnCambridge's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Cambridge is 1.0× the WHO annual guideline of 5 µg/m³.
51.1%
Humidity
24.8 km/h
Wind W
1019.5 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.21 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Cambridge?
Temperature & Precipitation
PM2.5 Trend
46h · 6 stationsPM2.55.21 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.9
Moderate
Station readings (4 stations within 25 km)
5.21
Median
5.64
Average
4.8
Low
7.0
High
PM2.5 µg/m³ · Model: 6.15 · Bias: +0.9
What is the 7-day forecast for Cambridge?
05-28
23.3° 17.8°
05-29
19.2° 11.2°
0.13 mm
05-30
24.5° 9.2°
8.56 mm
05-31
25.5° 10.0°
0.5 mm
06-01
22.7° 8.1°
06-02
20.9° 12.2°
0.44 mm
06-03
27.3° 14.7°
Both models agree
Avg diff: 4.5°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 2026-05-28T21:47 UTC.