Processed on 2024-03-04 14:15:24 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 West Virginia 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 West Virginia

January 2014 – 0 monitors in AirFire data archive

January 2015 – 0 monitors in AirFire data archive

January 2016 – 1 permanent monitors

January 2017 – 1 permanent monitors

January 2018 – 2 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 22 9 0 0 0 0 0
New 9 22 0 0 0 0 0

January 2019 – 1 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 28 1 0 0 0 0 2
New 19 10 0 0 0 0 2

January 2020 – 2 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 29 2 0 0 0 0 0
New 25 6 0 0 0 0 0

January 2021 – 2 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 24 4 0 0 0 0 3
New 18 10 0 0 0 0 3

January 2022 – 2 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 11 20 0 0 0 0 0
New 5 26 0 0 0 0 0

January 2023 – 3 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 48 12 0 0 0 0 2
New 39 21 0 0 0 0 2