Air Quality in Walnut Creek, United States

Cloudy
13.9°C · 71.5% humidity
13.9°
Feels 13.9°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
69 stations

Nearby Monitoring Stations

AQI Forecast
27 4am
27
27
20 7am
20
23
24 10am
25
26
26 1pm
33
34
34 4pm
34
27
27 7pm
27
27
27 10pm
27
27
27 1am
27
27
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.

71.5%
Humidity
23.8 km/h
Wind WSW
1015.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
20
4.74 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Walnut Creek?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.54.74 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (69 stations within 25 km)
4.74
Median
5.18
Average
2.08
Low
13.07
High
PM2.5 µg/m³ · Model: 6.5 · Bias: +1.8

What is the 7-day forecast for Walnut Creek?

05-29
25.1° 13.9°
05-30
24.2° 14.1°
05-31
31.0° 18.9°
06-01
32.6° 16.0°
06-02
24.9° 13.1°
06-03
31.4° 10.0°
06-04
29.2° 11.1°
Both models agree Avg diff: 4.8°C

Where are air quality stations near Walnut Creek?

16
Concord, Contra Costa, California
4.7 km PM2.5: 3.8 µg/m³
27
Concord, Contra Costa, California
4.7 km PM2.5: 6.5 µg/m³
9
Martinez 3
12.3 km PM2.5: 2.1 µg/m³
13
Berkeley-Martinez 1
13.2 km PM2.5: 3.1 µg/m³
19
Skyline HS
14.5 km PM2.5: 4.5 µg/m³
14
Thornhill ES
15.0 km PM2.5: 3.4 µg/m³
15
Montera MS/Joaquin Miller ES
15.4 km PM2.5: 3.5 µg/m³
17
Montclair ES
15.5 km PM2.5: 4.1 µg/m³
19
Lawrence Hall of Science
16.2 km PM2.5: 4.5 µg/m³
16
Lawrence Hall of Science
16.3 km PM2.5: 3.9 µg/m³

What cities are near Walnut Creek?

18 Pleasant Hill 21 Moraga 20 Orinda 12 Martinez 22 San Ramon 12 Bay Point 14 Benicia 20 Berkeley 12 Pittsburg 23 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 2026-05-29T14:38 UTC.