Processed on 2024-03-04 13:02:45 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 October.

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.

October in Hawaii

October 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 152 16 0 0 0 0 49
New 133 35 0 0 0 0 49

October 2015 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 228 50 0 0 0 0 1
New 192 86 0 0 0 0 1

October 2016 – 20 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 194 49 0 0 0 0 5
New 156 87 0 0 0 0 5

October 2017 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 258 13 0 0 0 0 8
New 243 28 0 0 0 0 8

October 2018 – 22 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

October 2019 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 270 0 0 0 0 0 9
New 270 0 0 0 0 0 9

October 2020 – 21 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 260 0 0 0 0 0 19
New 260 0 0 0 0 0 19

October 2021 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 271 6 0 0 0 0 33
New 260 17 0 0 0 0 33

October 2022 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 274 0 0 0 0 0 5
New 274 0 0 0 0 0 5

October 2023 – 44 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 381 0 0 0 0 0 53
New 380 1 0 0 0 0 53