Processed on 2024-03-04 14:09:35 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 Vermont spent in each AQI category during the the month of March.

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.

March in Vermont

March 2014 – 4 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 100 24 0 0 0 0 0
New 85 39 0 0 0 0 0

March 2015 – 4 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 100 23 0 0 0 0 1
New 85 38 0 0 0 0 1

March 2016 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 109 6 0 0 0 0 9
New 105 10 0 0 0 0 9

March 2017 – 4 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 117 6 0 0 0 0 1
New 109 14 0 0 0 0 1

March 2018 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 121 3 0 0 0 0 0
New 114 10 0 0 0 0 0

March 2019 – 4 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 113 11 0 0 0 0 0
New 93 31 0 0 0 0 0

March 2020 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 120 2 0 0 0 0 2
New 108 14 0 0 0 0 2

March 2021 – 4 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 113 9 0 0 0 0 2
New 102 20 0 0 0 0 2

March 2022 – 4 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 111 13 0 0 0 0 0
New 95 29 0 0 0 0 0

March 2023 – 4 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 118 5 0 0 0 0 1
New 108 15 0 0 0 0 1