Air quality index58Moderate

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

Next 24 hours

US AQI

63Now
55
47
4510 PM
43
41
391 AM
37
35
374 AM
38
39
417 AM
43
45
4510 AM
45
45
541 PM
63
73
754 PM
77
78

Air quality outlook

Worst hour each day

Today71Moderate
Sat 1778Moderate
Sun 1843Good
Mon 1943Good
Tue 2041Good

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

Live radar

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About Palo Alto weather

Palo Alto is in Santa Clara County, California, United States at 37.44°, -122.14°. Right now it’s 74° and mostly clear; today’s high is 87° 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.