Air Quality in Walnut Creek, United States

Windy
25.1°C · 24.3% humidity
25.1°
Feels 25.1°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
71 stations

Nearby Monitoring Stations

AQI Forecast
27 4pm
27
34
20 7pm
24
27
22 10pm
23
24
25 1am
33
33
26 4am
27
27
27 7am
25
25
25 10am
25
25
25 1pm
25
25
AD 728×90

Air Quality Index Trend

48h · 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.

24.3%
Humidity
62.0 km/h
Wind SW
1014.3 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
20
4.66 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Walnut Creek?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.54.66 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (71 stations within 25 km)
4.66
Median
4.58
Average
3.03
Low
7.2
High
PM2.5 µg/m³ · Model: 7.0 · Bias: +2.3

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: 4.8°C

Where are air quality stations near Walnut Creek?

22
Concord, Contra Costa, California
4.7 km PM2.5: 5.3 µg/m³
55
Concord, Contra Costa, California
4.7 km PM2.5: 14.0 µg/m³
12
Martinez 3
12.3 km PM2.5: 3.0 µg/m³
15
Berkeley-Martinez 1
13.2 km PM2.5: 3.5 µg/m³
15
Skyline HS
14.5 km PM2.5: 3.7 µg/m³
18
Thornhill ES
15.0 km PM2.5: 4.4 µg/m³
16
Montera MS/Joaquin Miller ES
15.4 km PM2.5: 3.9 µg/m³
18
Montclair ES
15.5 km PM2.5: 4.4 µg/m³
16
Lawrence Hall of Science
16.2 km PM2.5: 3.9 µg/m³
18
Lawrence Hall of Science
16.3 km PM2.5: 4.4 µg/m³

What cities are near Walnut Creek?

20 Pleasant Hill 19 Moraga 20 Orinda 15 Martinez 19 San Ramon 17 Bay Point 16 Benicia 21 Berkeley 18 Pittsburg 19 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 2026-06-09T02:42 UTC.