Next 24 hours

US AQI

43Now
44
44
459 PM
44
44
4312 AM
44
44
453 AM
44
44
436 AM
43
43
439 AM
44
46
4712 PM
37
26
163 PM
27
38

Air quality outlook

Worst hour each day

Today45Good
Sat 1749Good
Sun 1855Moderate
Mon 19102Unhealthy for sensitive groups
Tue 2069Moderate

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

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About Fontana weather

Fontana is in San Bernardino County, California, United States at 34.09°, -117.44°. Right now it’s 86° and mostly clear; today’s high is 90° with a 1% 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.