Clean Air and Clear Views?
Grand Canyon is in the northwest corner of Arizona, close to the borders of Utah and Nevada. The Colorado River, which flows through the canyon, drains water from seven states, however the natural feature we know as Grand Canyon is entirely in Arizona.
Visibility Comparison from Yavapai Point Webcam
Grand Canyon National Park is one of only 49 Class I air areas managed by the National Park Service and is afforded the highest level of protection under the Clean Air Act.
Grand Canyon is part of a network of air monitoring stations in almost 70 national parks.
Primary Pollutants of Concern
Reduced air quality can occur year-round at Grand Canyon National Park from wildfire and regional air pollution. Ozone and particulate matter 2.5 microns and smaller (PM2.5) are the most harmful pollutants at the Park, particularly when performing more strenuous activities.
Links:Live Weather & Air Quality Data (U.S. National Park Service) (nps.gov))
EPA AirNOW: https://www.airnow.gov
EPA’s Fire and Smoke Map (https://fire.airnow.gov)
Historic Visibility Studies: Historic Visibility Studies in National Parks (U.S. National Park Service) (nps.gov) (includes GRCA – shows that areas as far as southern California contribute to visibility impairment at the Grand Canyon)
Park Air Quality - Sequoia & Kings Canyon National Parks (U.S. National Park Service) (nps.gov)
Current Air Quality and Smoke Monitoring - Yosemite National Park (U.S. National Park Service) (nps.gov)
Last updated: September 3, 2021