Air Quality in Westminster, United States
Cloudy
20.0°C · 89.6% humidity
20.0°
Feels 20.0°
29
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Westminster's air quality — share it
AQI Forecast
25
2am
25
25
29
5am
25
25
25
8am
27
27
27
11am
27
34
34
2pm
34
27
27
5pm
27
27
27
8pm
34
34
34
11pm
34
34
Air Quality Index Trend
47h · 2 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.
89.6%
Humidity
29.6 km/h
Wind SSW
1015.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.03 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Westminster?
Temperature & Precipitation
PM2.5 Trend
47h · 2 stationsPM2.57.03 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Westminster?
06-09
27.6° 11.4°
06-10
26.9° 21.7°
3.94 mm
06-11
22.6° 10.3°
06-12
27.2° 15.5°
2.87 mm
06-13
28.3° 17.6°
0.31 mm
06-14
23.9° 17.0°
7.94 mm
06-15
24.1° 12.1°
0.75 mm
Both models agree
Avg diff: 5.8°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 2026-06-09T09:58 UTC.