• Giant Sequoia Trees

    Sequoia & Kings Canyon

    National Parks California

There are park alerts in effect.
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  • Sequoia and Kings Canyon National Parks Institute Fire Restrictions

    Effective June 18, 2014, the parks are in Stage 1 fire restrictions, see link below for more information. These restrictions will remain in place until further notice. More »

  • Road Construction Delays Begin on Park Roads for 2014 Season

    Expect occasional 15-minute to 1-hour delays at various locations in Sequoia and Kings Canyon National Parks beginning Monday, June 2, weekdays only, between 5 a.m.-3 p.m., including delays to/from the General Sherman Tree, Crystal Cave, and Grant Grove. More »

  • Vehicle Length Limits in Sequoia National Park (if Entering/Exiting Hwy 198)

    Planning to see the "Big Trees" in Sequoia National Park? If you enter/exit via Hwy. 198, please pay close attention to vehicle length advisories for your safety and the safety of others. More »

  • You May Have Trouble Calling Us

    We are experiencing technical problems receiving incoming phone calls. We apologize for the inconvenience. Please send us an email to SEKI_Interpretation@nps.gov or check the "More" link for trip-planning information. More »

Air Quality & Human Health

Hiker pauses to catch his breath at Forester Pass
Hiker pauses at Forester Pass. At 13,180, Forester is the highest pass on the Pacific Crest Trail.
SMB Photo
 
Air Quality Index

This Air Quality Index is used at park visitor centers to give a daily report on air conditions expected in the parks.

NPS Graphic

There is a growing concern over the effects of air pollution and air toxins on human health. While research continues to better understand these links, there is already solid evidence of health concerns with higher levels of ozone and particulate matter.

Visitors to Sequoia and Kings Canyon National Parks are made aware of daily quality by our air advisory program. Predicted levels of ozone are translated into an air quality index which alerts the public to unhealthy air quality. This information is widely distributed to employees and is posted at the three largest visitor centers in the parks.

Human Health Link

Did You Know?

Walter Fry in NPS uniform

After spending five days with five men cutting down a single sequoia, Walter Fry counted the growth rings on the fallen giant. The answer shocked him into changing careers. In just a few days they had ended 3266 years of growth. Fry later became a park ranger and, in 1912, the parks' superintendent.