Next 24 hours

US AQI

43Now
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41
399 PM
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4512 AM
43
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393 AM
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416 AM
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419 AM
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4712 PM
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513 PM
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Air quality outlook

Worst hour each day

Today45Good
Sat 1751Moderate
Sun 1861Moderate
Mon 1977Moderate
Tue 2098Moderate

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

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About Lake Forest weather

Lake Forest is in Orange County, California, United States at 33.65°, -117.69°. Right now it’s 91° and mostly clear; today’s high is 95° with a 2% 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.