Air Quality in Westminster, United States

Windy
25.5°C · 50.0% humidity
25.5°
Feels 25.5°
32
Good
Air quality is satisfactory. Enjoy outdoor activities.
9 stations

Nearby Monitoring Stations

AQI Forecast
27 7am
27
34
32 10am
34
34
34 1pm
34
34
34 4pm
34
34
27 7pm
27
27
27 10pm
27
27
27 1am
34
34
34 4am
34
27
AD 728×90

Air Quality Index Trend

48h · 2 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.

50.0%
Humidity
46.7 km/h
Wind SSW
1008.8 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
32
7.83 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Westminster?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.57.83 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (9 stations within 25 km)
7.83
Median
8.15
Average
3.85
Low
10.62
High
PM2.5 µg/m³ · Model: 8.2 · Bias: +0.4

What is the 7-day forecast for Westminster?

07-21
26.2° 22.3°
07-22
24.9° 21.6°
07-23
24.9° 20.9°
07-24
30.0° 22.1°
07-25
26.7° 21.8°
07-26
28.7° 21.1°
07-27
28.0° 22.1°
Both models agree Avg diff: 1.7°C

Where are air quality stations near Westminster?

11
Davis Elementary
13.2 km PM2.5: 2.7 µg/m³
8
Monroe Elementary
14.2 km PM2.5: 2.0 µg/m³
20
Kennedy Elementary
14.4 km PM2.5: 4.8 µg/m³
11
Villa Intermediate
14.7 km PM2.5: 2.7 µg/m³
26
Century High School
14.9 km PM2.5: 6.2 µg/m³
32
Wilmington Pk ES (7781)
22.3 km PM2.5: 7.7 µg/m³
40
Watson Yard
23.3 km PM2.5: 9.5 µg/m³
34
Wilmington Public Library - Outside
23.9 km PM2.5: 8.1 µg/m³
16
Wilmington Public Library - Inside
24.1 km PM2.5: 3.8 µg/m³
34
Broad Ave ES (2527)
24.1 km PM2.5: 8.2 µg/m³

What cities are near Westminster?

34 Stanton 26 Garden Grove 37 Cypress 26 Fountain Valley 36 Seal Beach 38 La Palma 26 Huntington Beach 26 Anaheim 37 Buena Park 38 Cerritos
Get AQI alerts for Westminster

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T17:14 UTC.