Air Quality in Westfield, United States
Cloudy
11.3°C · 72.8% humidity
11.3°
Feels 11.3°
15
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Westfield's air quality — share it
AQI Forecast
25
12am
27
27
15
3am
18
21
30
6am
31
25
23
9am
24
24
24
12pm
27
27
27
3pm
27
27
34
6pm
34
27
34
9pm
34
34
Air Quality Index Trend
47h · 2 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.
72.8%
Humidity
12.6 km/h
Wind W
1000.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
3.64 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Westfield?
Temperature & Precipitation
PM2.5 Trend
47h · 2 stationsPM2.53.64 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
3.64
Median
3.64
Average
3.64
Low
3.64
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +2.6
What is the 7-day forecast for Westfield?
06-09
32.9° 11.3°
06-10
20.3° 13.2°
1.56 mm
06-11
25.3° 7.6°
06-12
19.6° 14.2°
10.63 mm
06-13
29.0° 15.9°
0.81 mm
06-14
23.0° 10.2°
11.62 mm
06-15
27.0° 11.9°
1.19 mm
Both models agree
Avg diff: 6.7°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 2026-06-09T07:44 UTC.