Processed on 2024-03-04 12:43:13 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 Alabama 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 Alabama

February 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 188 63 0 0 0 0 1
New 119 132 0 0 0 0 1

February 2015 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 162 42 1 0 0 0 19
New 80 124 1 0 0 0 19

February 2016 – 23 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 220 54 0 0 0 0 45
New 164 110 0 0 0 0 45

February 2017 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 224 87 0 0 0 0 25
New 134 177 0 0 0 0 25

February 2018 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 259 32 0 0 0 0 17
New 194 97 0 0 0 0 17

February 2019 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 99 13 0 0 0 0 0
New 77 35 0 0 0 0 0

February 2020 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 232 17 0 0 0 0 12
New 194 55 0 0 0 0 12

February 2021 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 225 65 0 0 0 0 18
New 159 131 0 0 0 0 18

February 2022 – 20 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 189 69 0 0 0 0 22
New 140 118 0 0 0 0 22

February 2023 – 14 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 293 67 0 0 0 0 32
New 211 149 0 0 0 0 32