What is the air quality in Walnut Creek today?

The current Air Quality Index (AQI) in Walnut Creek is 20 (Good). PM2.5 concentration is 4.89 µg/m³.

What is the temperature in Walnut Creek right now?

The current temperature in Walnut Creek is 25.1°C (feels like 25.1°C). Humidity is 24.3% and wind speed is 62.0 km/h.

Is it safe to go outside in Walnut Creek?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 5.9 (High).

Air Quality in Walnut Creek, United States

Windy

25.1°C · 24.3% humidity

25.1°

Feels 25.1°

Good

Air quality is satisfactory. Enjoy outdoor activities.

72 stations

Nearby Monitoring Stations

AQI Forecast

27 3pm

20 6pm

29 9pm

25 12am

33 3am

27 6am

25 9am

25 12pm

Air Quality Index Trend

48h · 1 stn

View full history →

Walnut Creek's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.

24.3%

Humidity

62.0 km/h

Wind SW

1014.3 hPa

Pressure

5.9

UV High

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

4.89 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Walnut Creek?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station

PM2.54.89 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX5.9

High

Station readings (72 stations within 25 km)

4.89

Median

4.66

Average

3.05

Low

7.2

High

PM2.5 µg/m³ · Model: 6.25 · Bias: +1.4

What is the 7-day forecast for Walnut Creek?

06-09

25.1° 12.5°

06-10

30.6° 15.7°

06-11

33.7° 19.4°

06-12

32.3° 16.0°

06-13

28.4° 11.5°

06-14

27.2° 16.4°

06-15

25.0° 13.4°

Both models agree Avg diff: 5.0°C

Where are air quality stations near Walnut Creek?

Concord, Contra Costa, California

4.7 km PM2.5: 5.3 µg/m³

Concord, Contra Costa, California

4.7 km PM2.5: 14.0 µg/m³

Martinez 3

12.3 km PM2.5: 3.7 µg/m³

Berkeley-Martinez 1

13.2 km PM2.5: 4.4 µg/m³

Skyline HS

14.5 km PM2.5: 3.8 µg/m³

Thornhill ES

15.0 km PM2.5: 4.4 µg/m³

Montera MS/Joaquin Miller ES

15.4 km PM2.5: 4.0 µg/m³

Montclair ES

15.5 km PM2.5: 4.4 µg/m³

Lawrence Hall of Science

16.2 km PM2.5: 3.9 µg/m³

Lawrence Hall of Science

16.3 km PM2.5: 4.2 µg/m³

What cities are near Walnut Creek?

22 Pleasant Hill 19 Moraga 19 Orinda 18 Martinez 19 San Ramon 20 Bay Point 18 Benicia 20 Berkeley 21 Pittsburg 20 Oakland

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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 2026-06-09T01:01 UTC.