Processed on 2024-03-04 13:33:32 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 Nebraska 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 Nebraska

March 2014 – 1 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 23 7 1 0 0 0 0
New 17 13 1 0 0 0 0

March 2015 – 2 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 33 5 0 0 0 0 24
New 25 13 0 0 0 0 24

March 2016 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 51 10 0 0 0 0 1
New 43 18 0 0 0 0 1

March 2017 – 2 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 38 19 0 0 0 0 5
New 21 36 0 0 0 0 5

March 2018 – 6 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 67 25 0 0 0 0 1
New 38 54 0 0 0 0 1

March 2019 – 3 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 72 21 0 0 0 0 0
New 61 32 0 0 0 0 0

March 2020 – 7 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 77 3 0 0 0 0 13
New 69 11 0 0 0 0 13

March 2021 – 5 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 114 8 0 0 0 0 2
New 101 21 0 0 0 0 2

March 2022 – 6 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 148 3 0 0 0 0 4
New 129 22 0 0 0 0 4

March 2023 – 6 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 178 5 0 0 0 0 3
New 152 31 0 0 0 0 3