Processed on 2024-03-04 13:47:11 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 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 North Dakota

January 2014 – 3 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 90 2 0 0 0 0 1
New 87 5 0 0 0 0 1

January 2015 – 3 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 91 1 0 0 0 0 1
New 83 9 0 0 0 0 1

January 2016 – 8 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 72 20 0 0 0 0 1
New 56 36 0 0 0 0 1

January 2017 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 88 5 0 0 0 0 0
New 77 16 0 0 0 0 0

January 2018 – 11 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 146 7 1 0 0 0 1
New 136 17 1 0 0 0 1

January 2019 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 148 6 0 0 0 0 1
New 144 10 0 0 0 0 1

January 2020 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 151 3 0 0 0 0 1
New 141 13 0 0 0 0 1

January 2021 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 97 20 0 0 0 0 7
New 88 29 0 0 0 0 7

January 2022 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 152 3 0 0 0 0 0
New 149 6 0 0 0 0 0

January 2023 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 111 39 3 0 0 0 2
New 91 59 3 0 0 0 2