Air Quality in Westminster, United States

Windy
19.1°C · 56.2% humidity
19.1°
Feels 19.1°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
11 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
52 7pm
52
49
23 10pm
46
33
33 1am
21
21
21 4am
21
21
21 7am
21
21
21 10am
21
21
33 1pm
21
21
21 4pm
21
33
Station readings
52
52
49
23
CAMS model adj -4
50
50
50
50
50
37
37
25
25
25
25
25
25
25
25
25
25
25
37
25
25
25
25
37
AD 728×90

PM2.5 Trend (24h)

32h · 2 stations
56.2%
Humidity
82.6 km/h
Wind WSW
1011.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Westminster?

Temperature & Precipitation

PM2.59.16 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (11 stations within 25 km)
9.16
Median
8.48
Average
3.73
Low
10.28
High
PM2.5 µg/m³ · Model: 10.4 · Bias: +1.2

What is the 7-day forecast for Westminster?

04-09
20.8° 16.9°
04-10
19.1° 15.9°
13.62 mm
04-11
18.2° 15.0°
15.12 mm
04-12
17.3° 13.6°
0.31 mm
04-13
17.4° 13.8°
0.06 mm
04-14
20.9° 15.4°
04-15
22.0° 17.9°
Both models agree Avg diff: 1.6°C

Where are air quality stations near Westminster?

38
Davis Elementary
13.2 km PM2.5: 9.2 µg/m³
39
Monroe Elementary
14.2 km PM2.5: 9.4 µg/m³
42
Kennedy Elementary
14.4 km PM2.5: 10.0 µg/m³
43
Villa Intermediate
14.7 km PM2.5: 10.4 µg/m³
41
Century High School
14.9 km PM2.5: 9.9 µg/m³
30
Wilmington Pk ES (7781)
22.3 km PM2.5: 7.2 µg/m³
30
Wilmington Public Library - Outside
23.9 km PM2.5: 7.2 µg/m³
15
Wilmington Public Library - Inside
24.1 km PM2.5: 3.7 µg/m³
33
Broad Ave ES (2527)
24.1 km PM2.5: 7.9 µg/m³
34
Bonita ES (2473)
24.7 km PM2.5: 8.1 µg/m³

What cities are near Westminster?

39 Stanton 41 Garden Grove 41 Cypress 41 Fountain Valley 37 Seal Beach 41 La Palma 41 Huntington Beach 41 Anaheim 45 Buena Park 41 Cerritos

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T22:55 UTC.