Processed on 2024-03-04 13:01:36 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 Hawaii 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 Hawaii

March 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 217 53 2 0 0 0 7
New 194 76 2 0 0 0 7

March 2015 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 202 49 0 0 0 0 28
New 178 73 0 0 0 0 28

March 2016 – 20 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 186 63 3 0 0 0 27
New 148 101 3 0 0 0 27

March 2017 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 160 66 0 0 0 0 53
New 132 94 0 0 0 0 53

March 2018 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 243 18 0 0 0 0 18
New 220 41 0 0 0 0 18

March 2019 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 274 3 0 0 0 0 2
New 271 6 0 0 0 0 2

March 2020 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 237 0 0 0 0 0 42
New 237 0 0 0 0 0 42

March 2021 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 240 0 0 0 0 0 39
New 240 0 0 0 0 0 39

March 2022 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 268 0 0 0 0 0 11
New 264 4 0 0 0 0 11

March 2023 – 44 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 363 0 0 0 0 0 9
New 358 5 0 0 0 0 9