Notification of Exceedance of a National Ambient Air Quality Standard
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). Preliminary data only – subject to change.
Click here to see the current list of the NAAQS (PDF).
Abbreviations
| 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/m3 | microgram per cubic meter |
| NO2 | Nitrogen Dioxide |
Archived Data
Click on the following links to see exceedances from previous years:
exceedances through 2009 (PDF)
Related Topics
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.
View Hawaii Ambient Air Quality Data. Please note that the data has not been validated for quality assurance and is provided for information only.
Read the FAQs on Vog from Kilauea Volcano on the Big Island.
If you have any questions, please call the Clean Air Branch at (808) 586-4200.