Processed on 2024-03-04 13:02:16 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 July.

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.

July in Hawaii

July 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 210 20 0 0 0 0 18
New 193 37 0 0 0 0 18

July 2015 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 243 23 0 0 0 0 13
New 227 39 0 0 0 0 13

July 2016 – 20 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 233 37 0 0 0 0 9
New 197 73 0 0 0 0 9

July 2017 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 275 4 0 0 0 0 0
New 258 21 0 0 0 0 0

July 2018 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 158 71 1 0 0 0 18
New 140 89 1 0 0 0 18

July 2019 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 278 0 0 0 0 0 1
New 278 0 0 0 0 0 1

July 2020 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 278 0 0 0 0 0 1
New 278 0 0 0 0 0 1

July 2021 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 258 0 0 0 0 0 21
New 258 0 0 0 0 0 21

July 2022 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 283 0 0 0 0 0 27
New 281 2 0 0 0 0 27

July 2023 – 44 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 368 0 0 0 0 0 4
New 366 2 0 0 0 0 4