Processed on 2024-03-04 14:18:40 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 Wisconsin spent in each AQI category during the the month of October.

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.

October in Wisconsin

October 2014 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 365 8 0 0 0 0 43
New 334 39 0 0 0 0 43

October 2015 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 383 4 0 0 0 0 29
New 364 23 0 0 0 0 29

October 2016 – 29 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 339 8 0 0 0 0 69
New 308 39 0 0 0 0 69

October 2017 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 381 11 0 0 0 0 56
New 357 35 0 0 0 0 56

October 2018 – 33 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 429 27 0 0 0 0 24
New 387 69 0 0 0 0 24

October 2019 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 510 12 0 0 0 0 22
New 470 52 0 0 0 0 22

October 2020 – 35 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 529 14 0 0 0 0 33
New 468 75 0 0 0 0 33

October 2021 – 18 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 510 27 0 0 0 0 39
New 437 100 0 0 0 0 39

October 2022 – 18 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 443 113 2 0 0 0 18
New 353 203 2 0 0 0 18

October 2023 – 19 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 525 15 0 0 0 0 36
New 468 72 0 0 0 0 36