Poor air quality often afflicts Sequoia and Kings Canyon National Parks, especially during summer. High ozone levels may be the most harmful pollutant here. In summer months, concentrations often exceed the federal ozone health standards. Ozone can have negative health efects, particularly for sensitive groups such as children, older people, and those with heart or lung disease.
Daily Air Quality Forecasts
Below are the most recent air quality forecasts sent via Twitter by the parks' Air Resource Advisors during the summer months. The date of the last forecast is in the lower right of each tweet.
Last updated: May 29, 2020