Processed on 2024-03-04 13:02:06 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 June.

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.

June in Hawaii

June 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 210 18 0 0 0 0 12
New 185 43 0 0 0 0 12

June 2015 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 246 18 0 0 0 0 6
New 228 36 0 0 0 0 6

June 2016 – 20 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 211 36 0 0 0 0 23
New 192 55 0 0 0 0 23

June 2017 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 229 15 0 0 0 0 26
New 209 35 0 0 0 0 26

June 2018 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 177 78 9 1 0 0 5
New 167 88 9 1 0 0 5

June 2019 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 250 0 0 0 0 0 20
New 250 0 0 0 0 0 20

June 2020 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 252 1 0 0 0 0 17
New 251 2 0 0 0 0 17

June 2021 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 237 0 0 0 0 0 33
New 237 0 0 0 0 0 33

June 2022 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 285 0 0 0 0 0 15
New 284 1 0 0 0 0 15

June 2023 – 44 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 312 0 0 0 0 0 48
New 308 4 0 0 0 0 48