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US AQI

45Now
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459 PM
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4312 AM
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Air quality outlook

Worst hour each day

Today45Good
Sat 1747Good
Sun 1849Good
Mon 1941Good
Tue 2039Good

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

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About San Tan Valley weather

San Tan Valley is in Pinal County, Arizona, United States at 33.19°, -111.53°. Right now it’s 78° and windy; today’s high is 82° with a 0% chance of rain.

Arizona is known for its arid desert climate, particularly in the southern lowlands where Phoenix regularly ranks as one of the hottest cities in the United States. Summer temperatures in the Sonoran Desert routinely exceed 110 degrees Fahrenheit, and the city has recorded stretches of consecutive days above 100 degrees lasting over a month. Despite the heat, humidity remains very low for most of the year.