Air quality index56Moderate

Acceptable for most people; unusually sensitive people should take it easier outdoors.

Next 24 hours

US AQI

63Now
58
54
499 PM
49
49
4912 AM
48
46
453 AM
43
40
376 AM
38
39
399 AM
41
43
4512 PM
58
70
823 PM
84
85

Air quality outlook

Worst hour each day

Today63Moderate
Sat 1786Moderate
Sun 1843Good
Mon 1943Good
Tue 2041Good

From our air-quality forecast models (GEOS-CF / GEFS aerosols). AQI uses the US EPA scale.

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About Walnut Creek weather

Walnut Creek is in Contra Costa County, California, United States at 37.91°, -122.06°. Right now it’s 81° and clear; today’s high is 94° with a 0% chance of rain.

California encompasses an extraordinary range of climates, from the Mediterranean coast to alpine peaks, scorching deserts, and temperate rainforests. The state's Central Valley is one of the most productive agricultural regions in the world, benefiting from warm, dry summers and mild, wet winters. Death Valley holds the record for the highest reliably recorded air temperature on Earth at 134 degrees Fahrenheit.