Air quality index61Moderate

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

Next 24 hours

US AQI

67Now
63
59
562 AM
52
49
485 AM
48
47
458 AM
43
41
5011 AM
58
67
662 PM
65
65
655 PM
65
65
638 PM
61
59

Air quality outlook

Worst hour each day

Today75Moderate
Thu 867Moderate
Fri 980Moderate
Sat 1061Moderate
Sun 1141Good

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

Live radar

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About Casper weather

Casper is in Natrona County, Wyoming, United States at 42.87°, -106.31°. Right now it’s 55° and haze; today’s high is 69° with a 0% chance of rain.

Wyoming has a semi-arid continental climate characterized by cold winters, moderate summers, and persistent wind. The state is one of the windiest in the nation, with Cheyenne and the high plains regularly experiencing sustained winds above 30 mph and gusts exceeding 60 mph. Its high average elevation of 6,700 feet contributes to cooler temperatures, lower humidity, and more intense UV radiation than states at similar latitudes.