Processed on 2024-03-04 13:08:16 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 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 Indiana

June 2014 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 152 98 2 0 0 0 89
New 89 161 2 0 0 0 89

June 2015 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 198 122 0 0 0 0 52
New 117 203 0 0 0 0 52

June 2016 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 278 48 0 0 0 0 77
New 197 129 0 0 0 0 77

June 2017 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 301 29 0 0 0 0 73
New 237 93 0 0 0 0 73

June 2018 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 261 73 0 0 0 0 69
New 197 137 0 0 0 0 69

June 2019 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 282 40 0 0 0 0 81
New 194 128 0 0 0 0 81

June 2020 – 27 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 256 57 0 0 0 0 90
New 202 111 0 0 0 0 90

June 2021 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 305 40 0 0 0 0 58
New 234 111 0 0 0 0 58

June 2022 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 163 65 0 0 0 0 51
New 121 107 0 0 0 0 51

June 2023 – 24 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 116 262 31 28 5 0 23
New 64 313 32 23 10 0 23