Processed on 2024-03-04 14:19:12 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 January.

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.

January in Wyoming

January 2014 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 84 0 0 0 0 0 9
New 83 1 0 0 0 0 9

January 2015 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 83 2 0 0 0 0 8
New 81 4 0 0 0 0 8

January 2016 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 62 0 0 0 0 0 0
New 60 2 0 0 0 0 0

January 2017 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 31 0 0 0 0 0 0
New 31 0 0 0 0 0 0

January 2018 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 93 0 0 0 0 0 0
New 91 2 0 0 0 0 0

January 2019 – 3 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 56 0 0 0 0 0 6
New 56 0 0 0 0 0 6

January 2020 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 93 0 0 0 0 0 0
New 93 0 0 0 0 0 0

January 2021 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 155 0 0 0 0 0 31
New 155 0 0 0 0 0 31

January 2022 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 326 10 0 0 0 0 5
New 308 28 0 0 0 0 5

January 2023 – 18 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 354 20 0 0 0 0 29
New 345 29 0 0 0 0 29