Where is the air worst in Wyoming right now?

Centennial has the highest current reading at AQI 44 (Good).

How often are readings updated?

Monitors report every hour. We refresh this page with the latest hour from EPA AirNow.

Wyoming Air Quality

Current AQI at 18 monitors, highest 44 (Good) · Measured 10/26/2026, 1:00 PM PT

Monitors: 18
Highest AQI: 44; Good
Typical (median): 27; Good
Above 100: 0

Monitoring sites in Wyoming

Worst first. Times are local.

44CentennialGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
38South PassGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
33Juel SpringGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
33PinedaleGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
31BoulderGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
30Daniel SouthGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
28Moxa ArchGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
28Yellowstone NPGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
27Grand Teton NP - Science SchoolGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
27Pinedale GaseousGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
27WamsutterGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
25Big PineyGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
25Thunder BasinGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
23Johnson CountyGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
18Converse County Long-TermGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
17Casper GaseousGood · Ozone · Mon 10/26/2026, 1:00 PM MDT
17Sheridan PDGood · Fine particles (PM2.5) · Mon 10/26/2026, 1:00 PM MDT
16Cheyenne NCoreGood · Fine particles (PM2.5) · Mon 10/26/2026, 1:00 PM MDT

By county

Highest current AQI among the county's monitors

What the AQI means

0-50Good. Air quality is satisfactory and poses little or no risk.
51-100Moderate. Acceptable. A few unusually sensitive people may have symptoms.
101-150Unhealthy for Sensitive Groups. People with heart or lung disease, older adults, children and teens should limit long or heavy outdoor exertion.
151-200Unhealthy. Everyone may begin to feel effects. Sensitive groups should avoid long or heavy outdoor exertion.
201-300Very Unhealthy. Health alert: the risk of health effects is increased for everyone.
301-500Hazardous. Health warning of emergency conditions. Everyone is more likely to be affected.

Frequently asked questions

Where is the air worst in Wyoming right now?: Centennial has the highest current reading at AQI 44 (Good).
How often are readings updated?: Monitors report every hour. We refresh this page with the latest hour from EPA AirNow.

Source: EPA AirNow · Last updated 10/26/2026 · Data are preliminary and subject to change

Nearby states

Data sources

AirNowU.S. Environmental Protection Agency

Data as of 10/26/2026

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More about Wyoming

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About this data

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