Current Air Quality Index

The data presented here is "near-real time" and is intended only as an indicator of unvalidated recent air quality. These graphs are provided as a courtesy of the Washington Department of Ecology. Click on each graph below to view a three-day history.

For air quality information elsewhere in the Northwest, visit:

What is the Washington Air Quality Advisory (WAQA) and what do these numbers mean? Click here (pdf)

Vancouver Ozone (O3)


Click here for a three-day history of this monitor.


Vancouver, NE 84th Ave (PM2.5)


Click here for a three-day history of this monitor.


Yacolt (PM2.5)


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Longview, 30th Ave. (PM2.5)


Click here for a three-day history of this monitor.


Chehalis, Market Blvd. (PM2.5)


Click here for a three-day history of this monitor.