Processed on 2024-03-04 14:20:03 PST.


Disclaimer: Data presented here come from a variety of sources and do not represent official EPA measurements. Please visit AirNow for official measurements.


Cumulative exposure to smoke is an important public health metric. This report summarizes the cumulative number of days air quality monitors in Wyoming spent in each AQI category during the the month of June.

The tables below include only permanent monitors measuring PM2.5 and show cumulative exposure under existing NAAQS (National Ambient Air Quality Standards) and under the 2024 revised standards for PM2.5.

In the tables and plots below, ‘Old’ designates cumulative days calculated using the 2023 PM2.5 NAAQS while ‘New’ is calculated using the 2024 revised PM2.5 NAAQS. The impact of the NAAQS revision is quite clear.

June in Wyoming

June 2014 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 133 0 0 0 0 0 22
New 131 2 0 0 0 0 22

June 2015 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 120 0 0 0 0 0 4
New 119 1 0 0 0 0 4

June 2016 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 72 0 0 0 0 0 21
New 72 0 0 0 0 0 21

June 2017 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 28 0 0 0 0 0 3
New 28 0 0 0 0 0 3

June 2018 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 60 0 0 0 0 0 2
New 59 1 0 0 0 0 2

June 2019 – 3 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 79 0 0 0 0 0 14
New 79 0 0 0 0 0 14

June 2020 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 83 0 0 0 0 0 10
New 83 0 0 0 0 0 10

June 2021 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 186 2 0 0 0 0 91
New 183 5 0 0 0 0 91

June 2022 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 331 4 0 0 0 0 37
New 318 17 0 0 0 0 37

June 2023 – 18 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 364 3 0 0 0 0 36
New 357 10 0 0 0 0 36