Processed on 2024-03-04 13:48:51 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 North Dakota spent in each AQI category during the the month of November.

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.

November in North Dakota

November 2014 – 3 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 81 6 0 0 0 0 6
New 70 17 0 0 0 0 6

November 2015 – 3 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 85 5 0 0 0 0 3
New 64 26 0 0 0 0 3

November 2016 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 77 0 0 0 0 0 16
New 71 6 0 0 0 0 16

November 2017 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 122 13 0 0 0 0 20
New 107 28 0 0 0 0 20

November 2018 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 138 1 0 0 0 0 16
New 133 6 0 0 0 0 16

November 2019 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 150 0 0 0 0 0 5
New 150 0 0 0 0 0 5

November 2020 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 109 9 0 0 0 0 6
New 93 25 0 0 0 0 6

November 2021 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 149 1 0 0 0 0 5
New 141 9 0 0 0 0 5

November 2022 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 130 20 0 0 0 0 5
New 113 37 0 0 0 0 5

November 2023 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 138 12 0 0 0 0 5
New 132 18 0 0 0 0 5