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
Air Quality Index Trend
31h · 1 stnWestminster'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
Which pollutant is driving the AQI?
PM2.5▲
9.01 µg/m³
PM10
27.45 µg/m³
050100150200300500
What is the weather forecast for Westminster?
Temperature & Precipitation
PM2.5 Trend
31h · 1 stationPM2.59.01 µg/m³
✓ WHO
Good
PM1027.45 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Westminster?
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
Both models agree
Avg diff: 3.0°C
What cities are near Westminster?
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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.