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US AQI

44Now
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414 AM
39
39
387 AM
37
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3710 AM
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41
451 PM
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66
834 PM
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997 PM
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Air quality outlook

Worst hour each day

Today100Moderate
Sat 1086Moderate
Sun 11500Hazardous
Mon 1248Good
Tue 1332Good

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

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About Waterloo weather

Waterloo is in Black Hawk County, Iowa, United States at 42.49°, -92.34°. Right now it’s 57° and partly cloudy; today’s high is 75° with a 64% chance of rain.

Iowa has a humid continental climate characterized by large seasonal temperature variations and ample precipitation during the growing season. Des Moines experiences average winter lows around 13 degrees Fahrenheit and summer highs near 87 degrees. The state receives 30 to 36 inches of rainfall annually, most of which falls during the spring and summer months critical to its agricultural economy.