Processed on 2024-03-04 13:01:16 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 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 Hawaii

January 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 227 41 0 0 0 0 11
New 192 76 0 0 0 0 11

January 2015 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 184 47 0 0 0 0 17
New 151 80 0 0 0 0 17

January 2016 – 20 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 172 86 0 0 0 0 21
New 141 117 0 0 0 0 21

January 2017 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 152 79 0 0 0 0 17
New 125 106 0 0 0 0 17

January 2018 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 256 16 0 0 0 0 7
New 220 52 0 0 0 0 7

January 2019 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 241 0 0 0 0 0 7
New 240 1 0 0 0 0 7

January 2020 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 268 1 0 0 0 0 10
New 267 2 0 0 0 0 10

January 2021 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 251 1 0 0 0 0 27
New 247 5 0 0 0 0 27

January 2022 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 231 0 0 0 0 0 48
New 223 8 0 0 0 0 48

January 2023 – 44 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 359 11 1 1 0 0 0
New 323 47 1 1 0 0 0