Air Quality in Westfield, United States
Windy
23.3°C · 59.8% humidity
23.3°
Feels 23.3°
41
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Westfield's air quality — share it
AQI Forecast
27
5pm
27
27
41
8pm
37
41
39
11pm
31
30
27
2am
26
26
26
5am
25
25
25
8am
25
25
25
11am
27
27
25
2pm
25
25
Air Quality Index Trend
40h · 6 stnWestfield's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
59.8%
Humidity
63.3 km/h
Wind NNE
1017.4 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.75 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Westfield?
Temperature & Precipitation
PM2.5 Trend
40h · 6 stationsPM2.59.75 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
What is the 7-day forecast for Westfield?
08-03
25.2° 18.2°
0.19 mm
08-04
31.9° 17.5°
0.19 mm
08-05
31.5° 12.0°
2.63 mm
08-06
33.4° 21.1°
5.44 mm
08-07
29.3° 15.8°
08-08
32.6° 21.1°
10.12 mm
08-09
33.3° 22.2°
0.44 mm
Both models agree
Avg diff: 3.3°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 2026-08-08T00:56 UTC.