Yosemite National Park Air Resources

Air pollution is currently recognized as one of the most significant threats to the resources of the Sierra Nevada. Sources are local, regional, and in some instances, global. The National Park Service in cooperation with state and other federal agencies are making concerted efforts to reduce the damage caused by air pollution. This is done by an intensive monitoring program, support for research, and expanding the education of park visitors and those concerned about the future of Yosemite National Park.

Air quality has a dramatic impact on visibility in the Yosemite Valley. Move your pointer over the image to see a clean-air day in the Valley. Alternative image here for non-JavaScript browsers.

Additional Nature and Science Topics for Yosemite

You can't bring your basement arm chair (you know, the magenta one with the carefully forged ass groove) to the camp...
Price subject to change | Available through Backcountry.com
Featured Park
Rising above a scene rich with extraordinary wildlife, pristine lakes, and alpine terrain, the Teton Range stands monument to the people who fought to protect it. These are mountains of the imagination. Mountains that led to the creation of Grand Teton National Park where you can explore over two hundred miles of trails, float the Snake River or enjoy the serenity of this remarkable place.
Featured Wildlife
The pika is a close relative of the rabbits and hares, with two upper incisors on each side of the jaw, one behind the other. Being rock-gray in color, pikas are seldom seen until their shrill, metallic call reveals their presence.