Air Quality in Acton, United States
Rain
16.4°C · 97.3% humidity
16.4°
Feels 16.4°
43
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
AQI Forecast
34
2pm
34
34
43
5pm
40
39
30
8pm
29
27
26
11pm
25
25
24
2am
24
24
24
5am
24
24
24
8am
24
24
24
11am
24
25
Air Quality Index Trend
48h · 2 stnActon's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
97.3%
Humidity
72.9 km/h
Wind NNE
1013.1 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
10.39 µg/m³
PM10
27.45 µg/m³
050100150200300500
What is the weather forecast for Acton?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.510.39 µg/m³
✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX4.4
Moderate
What is the 7-day forecast for Acton?
07-21
26.4° 18.7°
3.81 mm
07-22
22.0° 14.0°
11.0 mm
07-23
27.6° 15.9°
1.25 mm
07-24
25.9° 14.8°
2.19 mm
07-25
34.8° 20.3°
2.44 mm
07-26
22.4° 16.8°
2.0 mm
07-27
29.2° 14.6°
3.06 mm
Both models agree
Avg diff: 3.3°C
What cities are near Acton?
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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 2026-07-21T21:27 UTC.