Health Advisories Issued for National Parks
Today – Monday, September 15, 2008
Current Ozone Health Advisories:
| National Park Service Area | Advisory Level | Expected Expiration |
| Sequoia / Kings Canyon National Park, California | 75 ppb to 95 ppb - Unhealthy for Sensitive Groups | September 16, 2008 @ 12:00 AM PDT |
Currently, no national parks are issuing particulate matter (PM2.5) health advisories.
more »Deteriorating air quality due to high pollutant levels of ozone and particulate matter cause the National Park Service to issue air quality health advisories at several national parks. These parks include Acadia, Grand Canyon, Great Smoky Mountains, Mammoth Cave, Rocky Mountain, Sequoia/Kings Canyon, and Shenandoah National Parks.
Both ozone and particulate matter concentrations in National Park Service areas periodically exceed Environmental Protection Agency health standards. Whenever ozone or particulate matter concentrations exceed or are predicted to exceed these health standards, park personnel post health advisories cautioning visitors of the potential health risks associated with exposures to elevated levels.