Processed on 2024-03-04 13:18:45 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 Maine 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 Maine

November 2014 – 6 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 93 11 0 0 0 0 51
New 78 26 0 0 0 0 51

November 2015 – 6 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 144 21 0 0 0 0 21
New 121 44 0 0 0 0 21

November 2016 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 167 12 0 0 0 0 7
New 144 35 0 0 0 0 7

November 2017 – 7 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 126 17 0 0 0 0 12
New 102 41 0 0 0 0 12

November 2018 – 18 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 219 13 0 0 0 0 16
New 198 34 0 0 0 0 16

November 2019 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 209 6 0 0 0 0 33
New 198 17 0 0 0 0 33

November 2020 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 221 11 0 0 0 0 16
New 204 28 0 0 0 0 16

November 2021 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 232 9 0 0 0 0 38
New 216 25 0 0 0 0 38

November 2022 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 207 1 0 0 0 0 9
New 199 9 0 0 0 0 9

November 2023 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 319 9 0 0 0 0 44
New 290 38 0 0 0 0 44