Protecting Oregon's Environment
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Oregon Department of Environmental Quality

Air Quality

Ground Level Ozone

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Ground Level Ozone 

Ozone, commonly called smog, is a colorless, odorless gas that can be harmful to human health and plant life. All areas of Oregon currently meet the federal air quality standard for ozone.

Because the Portland-Vancouver area at one time did not meet the standard, DEQ developed an ozone maintenance plan that also includes the Salem-Keizer area. Implementing these plans has ensured that ozone levels in the Portland-Vancouver and Salem areas are in compliance with federal health standards.

More information

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For questions about air quality regulations or permits, see our Contacts page.

For more information about Air Quality call 503-229-5359 or email.

Oregon Department of Environmental Quality
Headquarters: 811 SW Sixth Ave., Portland, OR 97204-1390
Phone: 503-229-5696 or toll free in Oregon 1-800-452-4011
Oregon Telecommunications Relay Service: 1-800-735-2900  FAX: 503-229-6124

The Oregon Department of Environmental Quality is a regulatory agency authorized to protect Oregon's environment by
the State of Oregon and the Environmental Protection Agency.

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