Processed on 2024-03-04 14:08:12 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 Utah 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 Utah

June 2014 – 2 permanent monitors

Processing error: Unable to calculate tables.

June 2015 – 0 monitors in AirFire data archive

June 2016 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 143 7 0 0 0 0 5
New 124 26 0 0 0 0 5

June 2017 – 6 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 149 19 0 0 0 0 18
New 132 36 0 0 0 0 18

June 2018 – 25 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 229 6 0 0 0 0 44
New 204 31 0 0 0 0 44

June 2019 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 307 0 0 0 0 0 34
New 292 15 0 0 0 0 34

June 2020 – 23 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 344 12 0 0 0 0 16
New 320 36 0 0 0 0 16

June 2021 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 310 76 0 0 0 0 141
New 230 156 0 0 0 0 141

June 2022 – 19 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 456 61 0 0 0 0 41
New 403 114 0 0 0 0 41

June 2023 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 588 9 0 0 0 0 23
New 549 48 0 0 0 0 23