Processed on 2024-03-04 13:07:35 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 February.

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.

February in Indiana

February 2014 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 113 150 11 0 0 0 6
New 79 183 12 0 0 0 6

February 2015 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 179 150 0 0 0 0 7
New 104 225 0 0 0 0 7

February 2016 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 278 86 0 0 0 0 13
New 218 146 0 0 0 0 13

February 2017 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 235 108 0 0 0 0 21
New 168 175 0 0 0 0 21

February 2018 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 258 89 3 0 0 0 14
New 200 147 3 0 0 0 14

February 2019 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 250 98 0 0 0 0 16
New 184 164 0 0 0 0 16

February 2020 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 261 76 0 0 0 0 40
New 174 163 0 0 0 0 40

February 2021 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 201 156 0 0 0 0 7
New 144 212 1 0 0 0 7

February 2022 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 194 79 0 0 0 0 91
New 153 120 0 0 0 0 91

February 2023 – 24 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 337 62 0 0 0 0 21
New 260 139 0 0 0 0 21