Air Quality in Westfield, United States
Cloudy
12.6°C · 72.5% humidity
12.6°
Feels 12.6°
27
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Westfield's air quality — share it
AQI Forecast
27
8pm
25
25
27
11pm
25
25
25
2am
25
25
25
5am
25
25
25
8am
24
24
24
11am
24
24
24
2pm
24
24
24
5pm
25
25
Air Quality Index Trend
46h · 4 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.
72.5%
Humidity
37.0 km/h
Wind W
1011.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.42 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Westfield?
Temperature & Precipitation
PM2.5 Trend
46h · 4 stationsPM2.56.42 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Westfield?
06-09
30.3° 12.6°
0.69 mm
06-10
27.5° 20.6°
7.94 mm
06-11
24.3° 14.6°
4.63 mm
06-12
27.0° 19.2°
3.5 mm
06-13
28.5° 22.9°
0.13 mm
06-14
27.6° 15.9°
0.06 mm
06-15
33.1° 22.2°
0.06 mm
Both models agree
Avg diff: 4.6°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 2026-06-09T03:32 UTC.