Processed on 2024-03-04 13:01:26 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 February.

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.

February in Hawaii

February 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 198 31 0 0 0 0 23
New 180 49 0 0 0 0 23

February 2015 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 166 51 0 0 0 0 7
New 137 80 0 0 0 0 7

February 2016 – 20 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 175 65 0 0 0 0 21
New 146 94 0 0 0 0 21

February 2017 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 143 65 0 0 0 0 16
New 129 79 0 0 0 0 16

February 2018 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 226 9 0 0 0 0 17
New 209 26 0 0 0 0 17

February 2019 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 227 2 0 0 0 0 23
New 226 3 0 0 0 0 23

February 2020 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 236 0 0 0 0 0 25
New 236 0 0 0 0 0 25

February 2021 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 239 0 0 0 0 0 13
New 238 1 0 0 0 0 13

February 2022 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 267 0 0 0 0 0 13
New 265 2 0 0 0 0 13

February 2023 – 44 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 335 0 0 0 0 0 1
New 325 10 0 0 0 0 1