Air Quality in Williamstown, United States

Windy
8.3°C · 68.3% humidity
8.3°
Feels 3.6°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast Calibrated
37 8pm
36
27
35 11pm
35
35
35 2am
35
48
48 5am
48
48
48 8am
48
73
73 11am
73
73
73 2pm
48
35
35 5pm
35
35
Station readings
37
36
27
CAMS model adj -2
37
37
37
37
37
37
37
37
50
50
50
50
50
50
75
75
75
75
75
50
37
37
37
37
AD 728×90

PM2.5 Trend (24h)

26h · 1 station
68.3%
Humidity
43.7 km/h
Wind SE
1032.6 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Temperature & Precipitation

PM2.56.9 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
04-09
14.1° 1.6°
04-10
19.8° 5.6°
04-11
22.8° 9.8°
04-12
21.8° 12.3°
04-13
25.5° 10.3°
04-14
27.8° 17.7°
04-15
25.5° 20.2°

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T23:08 UTC.