Processed on 2024-03-04 13:26:07 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 Minnesota spent in each AQI category during the the month of July.

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.

July in Minnesota

July 2014 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 415 33 0 0 0 0 32
New 355 93 0 0 0 0 32

July 2015 – 18 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 436 81 10 1 0 0 48
New 385 131 11 1 0 0 48

July 2016 – 37 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 537 1 0 0 0 0 38
New 516 22 0 0 0 0 38

July 2017 – 19 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 504 31 0 0 0 0 41
New 468 67 0 0 0 0 41

July 2018 – 40 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 552 22 0 0 0 0 34
New 510 64 0 0 0 0 34

July 2019 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 526 71 3 1 0 0 39
New 480 117 3 1 0 0 39

July 2020 – 42 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 600 33 4 0 0 0 35
New 564 69 4 0 0 0 35

July 2021 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 271 283 31 30 4 0 53
New 169 384 31 28 7 0 53

July 2022 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 526 5 0 0 0 0 109
New 509 22 0 0 0 0 109

July 2023 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 427 164 26 1 0 0 54
New 338 250 29 1 0 0 54