Air Quality in Walnut Creek, United States

Windy
36.3°C · 11.3% humidity
36.3°
Feels 36.3°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
67 stations

Nearby Monitoring Stations

AQI Forecast
34 12pm
34
34
28 3pm
30
31
32 6pm
32
33
33 9pm
33
34
34 12am
34
34
34 3am
34
34
27 6am
27
27
27 9am
27
27
AD 728×90

Air Quality Index Trend

47h · 1 stn

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.

11.3%
Humidity
55.8 km/h
Wind WSW
1004.7 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
28
6.62 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Walnut Creek?

Temperature & Precipitation

PM2.5 Trend

47h · 1 station
PM2.56.62 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX24.9
Extreme
AD 300×250
Station readings (67 stations within 25 km)
6.62
Median
6.78
Average
3.56
Low
16.9
High
PM2.5 µg/m³ · Model: 10.85 · Bias: +4.2

What is the 7-day forecast for Walnut Creek?

07-21
31.4° 14.6°
07-22
36.3° 19.2°
07-23
30.2° 20.3°
07-24
39.1° 16.6°
07-25
29.8° 17.3°
07-26
36.3° 13.8°
07-27
33.9° 16.6°
Both models agree Avg diff: 5.8°C

Where are air quality stations near Walnut Creek?

22
Concord, Contra Costa, California
4.7 km PM2.5: 5.3 µg/m³
89
Concord, Contra Costa, California
4.7 km PM2.5: 30.2 µg/m³
21
Martinez 3
12.3 km PM2.5: 5.1 µg/m³
23
Berkeley-Martinez 1
13.2 km PM2.5: 5.6 µg/m³
20
Skyline HS
14.5 km PM2.5: 4.7 µg/m³
23
Thornhill ES
15.0 km PM2.5: 5.5 µg/m³
23
Montera MS/Joaquin Miller ES
15.4 km PM2.5: 5.6 µg/m³
25
Montclair ES
15.5 km PM2.5: 6.1 µg/m³
22
Lawrence Hall of Science
16.2 km PM2.5: 5.2 µg/m³
23
Lawrence Hall of Science
16.3 km PM2.5: 5.4 µg/m³

What cities are near Walnut Creek?

27 Pleasant Hill 28 Moraga 28 Orinda 23 Martinez 27 San Ramon 22 Bay Point 23 Benicia 28 Berkeley 22 Pittsburg 31 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 2026-07-21T22:04 UTC.