What is the air quality in Westminster today?

The current Air Quality Index (AQI) in Westminster is 34 (Good). PM2.5 concentration is 8.19 µg/m³.

What is the temperature in Westminster right now?

The current temperature in Westminster is 28.5°C (feels like 28.5°C). Humidity is 32.2% and wind speed is 20.5 km/h.

Is it safe to go outside in Westminster?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Westminster, United States

Clear

28.5°C · 32.2% humidity

28.5°

Feels 28.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

7 stations

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 168 stn

View full history →

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.

32.2%

Humidity

20.5 km/h

Wind SW

1015.3 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

8.19 µg/m³

PM10

27.4 µg/m³

050100150200300500

What is the weather forecast for Westminster?

Temperature & Precipitation

PM2.5 Trend

45h · 168 stations

PM2.58.19 µg/m³ ✓ WHO

Good

PM1027.4 µg/m³

Good

UV INDEX0.0

Low

Station readings (7 stations within 25 km)

8.19

Median

8.2

Average

4.31

Low

11.09

High

PM2.5 µg/m³ · Model: 13.5 · Bias: +5.3

What is the 7-day forecast for Westminster?

10-20

28.5° 22.3°

10-21

24.7° 20.7°

10-22

31.7° 21.4°

10-23

23.6° 21.3°

10-24

23.5° 19.6°

0.13 mm

10-25

28.7° 18.2°

0.06 mm

10-26

25.5° 19.8°

1.37 mm

Both models agree Avg diff: 4.2°C

Where are air quality stations near Westminster?

Wilmington Pk ES (7781)

22.3 km PM2.5: 7.1 µg/m³

Watson Yard

23.3 km PM2.5: 10.2 µg/m³

Wilmington Public Library - Outside

23.9 km PM2.5: 7.7 µg/m³

Wilmington Public Library - Inside

24.1 km PM2.5: 4.3 µg/m³

Bonita ES (2473)

24.7 km PM2.5: 8.4 µg/m³

Curtiss MS (8103)

24.8 km PM2.5: 8.5 µg/m³

Gulf ES (4315)

24.8 km PM2.5: 8.9 µg/m³

Dolores ES (3452)

25.5 km PM2.5: 9.4 µg/m³

Bryson ES (2589)

26.8 km PM2.5: 8.4 µg/m³

Ambler ES (2089)

27.8 km PM2.5: 9.6 µg/m³

What cities are near Westminster?

36 Stanton 38 Garden Grove 37 Cypress 38 Fountain Valley 35 Seal Beach 38 La Palma 12 Huntington Beach 38 Anaheim 38 Buena Park 38 Cerritos

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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 2026-10-20T20:05 UTC.