Processed on 2024-03-04 13:17:02 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 January.

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.

January in Maine

January 2014 – 6 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 63 17 0 0 0 0 13
New 47 33 0 0 0 0 13

January 2015 – 6 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 125 37 0 0 0 0 24
New 103 59 0 0 0 0 24

January 2016 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 141 25 0 0 0 0 20
New 121 45 0 0 0 0 20

January 2017 – 7 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 146 29 0 0 0 0 11
New 119 56 0 0 0 0 11

January 2018 – 18 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 156 31 0 0 0 0 30
New 130 57 0 0 0 0 30

January 2019 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 223 20 0 0 0 0 5
New 188 55 0 0 0 0 5

January 2020 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 193 17 0 0 0 0 7
New 167 43 0 0 0 0 7

January 2021 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 229 11 0 0 0 0 8
New 214 26 0 0 0 0 8

January 2022 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 161 18 0 0 0 0 38
New 138 41 0 0 0 0 38

January 2023 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 204 1 0 0 0 0 43
New 194 11 0 0 0 0 43