Most of the year, Crater Lake National Park enjoys outstanding air quality. In the summer and fall, however, air quality can be adversely affected by smoke from local or regional wildfires. Smoke can limit views of the lake and pose serious health concerns, especially for sensitive groups.
The graphs below depict the Air Quality Index (AQI) for the past 7 days at Park Headquarters and Mazama Village. The bars furthest to the right show the latest readings, updated once per hour. Data from a third park location (Rim Village) can be viewed at AirNow.gov.
The AQI is a yardstick used by the Environmental Protection Agency to measure air quality and communicate health advisories. Learn more about the AQI here.
Last updated: September 1, 2021