For more information about National Park Service air resources, please visit

Photos & Multimedia


NPS Air Quality Webcam Icon

National Park Service Air Quality Web Cameras

Acadia, Big Bend, Denali, Grand Canyon, Grand Teton, Great Smoky Mountains, Hawaii Volcanoes, Joshua Tree, Mammoth Cave, Mount Rainier, North Cascades, Olympic, Sequoia & Kings Canyon, Shenandoah, Theodore Roosevelt, and Yosemite National Parks; Point Reyes National Seashore; and the National Mall & Memorial Parks are part of the air quality webcam network. Current images and air quality data are displayed on park webcam pages.

Old Faithful parking lot image, Yellowstone NP, Wyoming

Yellowstone National Park Winter Air Quality

The NPS monitors air quality at Yellowstone NP. This monitoring was initiated as a study related to snowmobile and snow coach use in the park. Images of the Old Faithful parking area are taken every 15 minutes and provided along with access to current air quality data. Learn more about Yellowstone NP winter vehicle use and air quality.

an image of a visitor enjoying vista captured by the Cabrillo National Monument webcam in California

Cabrillo National Monument Webcam

Cameras have been used to qualitatively monitor emission impacts on visibility since 1996, and webcams began running in late 2007. Images of San Diego Bay and downtown San Diego are collected from the northwest corner of the Visitor Center. The San Bernardino Mountains, about 150 miles away, are visible on clear days. Visit the Cabrillo National Monument homepage to learn more about the National Monument.

Podcasts & Videos

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On The Air

Air quality affects all areas of the planet and has become an issue for many National Parks. The National Park Service is working to monitor and understand the impacts of air pollution at National Parks.

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Mercury Contamination at Acadia National Park

This short video describes concerns about elevated levels of mercury across Acadia National Park's landscape. Mercury is a toxic heavy metal that builds-up in organisms and magnifies in concentration with each level of the food chain.

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Rocky Mountain National Park
Science Behind the Scenes–Air Quality Video

Learn how scientists at Rocky Mountain National Park are studying and monitoring air quality in the park.


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Views of the National Park Service - Air Quality Module

Views of the National Parks is an educational tool that presents the natural and scenic resources of our national parks. Haze, ozone, deposition, and toxics are explored in this module about air quality.

Thumbnail of the introductory page for Sequoia and Kings Canyon interactive air quality module

Air Quality in Sequoia and Kings Canyon National Parks

English and Spanish versions of this tutorial allow you to learn about smog in the Sierra Nevada, find out what the park is doing to improve air quality, and test your knowledge.

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Reactive Nitrogen–Cycling Through the Atmosphere and Ecosystem

Learn about the sources, effects, and consequences of nitrogen deposition in our environment.

Last Updated: January 27, 2012