Processed on 2024-03-04 13:09:07 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 Indiana spent in each AQI category during the the month of November.

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.

November in Indiana

November 2014 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 238 86 0 0 0 0 48
New 157 167 0 0 0 0 48

November 2015 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 300 74 3 0 0 0 26
New 237 137 3 0 0 0 26

November 2016 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 207 143 2 0 0 0 51
New 136 213 3 0 0 0 51

November 2017 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 315 70 0 0 0 0 18
New 235 150 0 0 0 0 18

November 2018 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 273 111 0 0 0 0 19
New 193 190 1 0 0 0 19

November 2019 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 141 65 0 0 0 0 197
New 101 105 0 0 0 0 197

November 2020 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 286 93 3 0 0 0 21
New 208 170 4 0 0 0 21

November 2021 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 275 93 3 0 0 0 32
New 214 154 3 0 0 0 32

November 2022 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 233 114 3 1 0 0 21
New 168 179 3 1 0 0 21

November 2023 – 24 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 391 79 3 0 0 0 23
New 293 177 3 0 0 0 23