Air Quality in Westfield, United States

Windy
5.6°C · 57.8% humidity
5.6°
Feels -0.3°
15
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast Calibrated
16 8pm
16
16
16 11pm
28
28
28 2am
28
28
41 5am
41
41
41 8am
66
66
66 11am
66
41
41 2pm
41
41
41 5pm
41
28
Station readings
16
16
CAMS model adj -9
25
25
25
25
37
37
37
37
37
50
50
50
50
75
75
75
75
50
50
50
50
50
50
37
AD 728×90

PM2.5 Trend (24h)

22h · 7 stations
57.8%
Humidity
44.4 km/h
Wind SSW
1031.7 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Temperature & Precipitation

PM2.53.62 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
AD 300×250
3.62
Median
3.62
Average
3.62
Low
3.62
High
PM2.5 µg/m³ · Model: 17.65 · Bias: +14.0
04-09
12.6° -2.3°
04-10
18.6° 0.3°
04-11
20.2° 5.8°
04-12
18.3° 5.0°
04-13
12.5° 8.2°
4.56 mm
04-14
25.5° 14.0°
04-15
21.7° 16.1°
0.88 mm

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T23:00 UTC.