As required by federal rule, the Department of Health (DOH) will notify the public of an exceedance of a National Ambient Air Quality Standard (NAAQS).
Click here to view the current list of exceedances (PDF).
Click here to see the current list of the NAAQS (PDF).
| SO2 |
Sulfur Dioxide |
O3 |
Ozone |
ppm |
parts per million |
| CO |
Carbon Monoxide |
PM10 |
Particulate matter with diameter ≤ 10 microns |
ppb |
parts per billion |
| Pb |
Lead |
PM2.5 |
Particulate matter with diameter ≤ 2.5 microns |
μg/m2 |
microgram per cubic meter |
| NO2 |
Nitrogen Dioxide |
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Click here to see the list of previous exceedances through 2009 (PDF).
Please click on the following links to learn more about related topics:
Visit the Hawaii Air Quality Data Books page and select the most recent data book to learn more about DOH monitoring, air pollutants and the NAAQS.
Learn more about air pollutants from Kilauea Volcano on the Big Island.
If you have any questions, please call the Clean Air Branch at (808)
586-4200.
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