Air Quality in Westminster, United States

Partly Cloudy
24.6°C · 63.5% humidity
24.6°
Feels 24.6°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model

Nearby Monitoring Stations

AQI Forecast
25 5pm
25
27
38 8pm
42
33
31 11pm
30
29
28 2am
28
26
26 5am
25
25
24 8am
24
24
24 11am
24
24
25 2pm
25
25
AD 728×90

Air Quality Index Trend

31h · 1 stn

Westminster's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

63.5%
Humidity
27.8 km/h
Wind SE
1013.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
38
9.01 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

31h · 1 station
PM2.59.01 µg/m³ ✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
07-22
25.6° 18.1°
2.06 mm
07-23
28.2° 16.8°
21.44 mm
07-24
25.2° 14.7°
0.69 mm
07-25
25.8° 19.1°
1.31 mm
07-26
26.8° 17.2°
6.94 mm
07-27
25.1° 22.2°
0.88 mm
07-28
33.0° 20.5°
0.56 mm
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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 2026-07-22T00:21 UTC.