Air Quality in Westminster, United States
Windy
26.2°C · 54.9% humidity
26.2°
Feels 26.2°
68
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
Model forecast
Nearby Monitoring Stations
Westminster's air quality — share it
AQI Forecast
54
1pm
54
54
68
4pm
64
61
59
7pm
58
57
56
10pm
55
55
55
1am
54
54
54
4am
54
54
54
7am
54
54
54
10am
54
54
Air Quality Index Trend
46h · 172 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. Current PM2.5 concentration in Westminster is 1.4× the WHO 24-hour guideline of 15 µg/m³.
54.9%
Humidity
42.1 km/h
Wind S
1010.4 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
20.3 µg/m³
PM10
41.15 µg/m³
050100150200300500
What is the weather forecast for Westminster?
Temperature & Precipitation
PM2.5 Trend
46h · 172 stationsPM2.520.3 µg/m³
×1.4 WHO
Moderate
PM1041.15 µg/m³
Good
UV INDEX17.4
Extreme
What is the 7-day forecast for Westminster?
08-03
26.8° 21.8°
08-04
27.2° 22.4°
08-05
29.1° 22.3°
08-06
28.0° 19.7°
08-07
26.0° 21.4°
08-08
26.2° 20.5°
08-09
24.8° 19.3°
Both models agree
Avg diff: 1.4°C
Where are air quality stations near Westminster?
43
Wilmington Pk ES (7781)
55
Watson Yard
43
Wilmington Public Library - Outside
23
Wilmington Public Library - Inside
44
Broad Ave ES (2527)
52
Bonita ES (2473)
52
Curtiss MS (8103)
54
Gulf ES (4315)
55
Dolores ES (3452)
55
Bryson ES (2589)
What cities are near Westminster?
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-07T23:58 UTC.