Processed on 2024-03-04 13:27:06 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 Mississippi 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 Mississippi

January 2014 – 4 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 119 5 0 0 0 0 0
New 98 26 0 0 0 0 0

January 2015 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 94 30 0 0 0 0 0
New 64 60 0 0 0 0 0

January 2016 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 122 7 0 0 0 0 26
New 111 18 0 0 0 0 26

January 2017 – 7 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 115 2 0 0 0 0 7
New 108 9 0 0 0 0 7

January 2018 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 141 40 0 0 0 0 5
New 97 84 0 0 0 0 5

January 2019 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 198 16 0 0 0 0 3
New 147 67 0 0 0 0 3

January 2020 – 16 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 171 44 0 0 0 0 2
New 138 77 0 0 0 0 2

January 2021 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 191 26 0 0 0 0 0
New 133 84 0 0 0 0 0

January 2022 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 211 37 0 0 0 0 0
New 152 96 0 0 0 0 0

January 2023 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 230 17 0 0 0 0 1
New 183 64 0 0 0 0 1