The map above is not able to display all state air quality monitors. View the state Department of Ecology's air monitoring network for an interactive map of air monitors in Washington.

Note: Some users might notice intermittent discrepancies in colors shown on the map on this website, and those reported on the state's air monitoring network. The map on this website uses the national air quality reporting system called the Air Quality Index (AQI) for calculating the air quality health category. However, the state uses the Washington Air Quality Advisory (WAQA) system of calculating air quality. Both use color-coded categories to show when air quality is good, moderate, or unhealthy. The difference is that the state's WAQA is based on lower levels of fine particle pollution than the federal AQI, thereby providing an earlier alert of potential air quality risks. If in doubt as to which better represents public health risk, use the more stringent of the two (i.e. the map showing worse air quality).

More Info
For Frequently Asked Questions (FAQs) about Washington’s air monitoring network follow these steps once you are on the state’s air monitoring page:

These monitors are deployed only as needed during major smoke incidents.  

Local and national air quality website by the US Environmental Protection Agency (EPA). 

Nationwide conditions.  If there is a big smoke incident in Washington, you may find it here.


  1. Hi,

    I'm a student at the University of Washington Bothell and I'm doing statistical analysis on the concentration of PM2.5 from 2001 to 2007. I saw that on November 6th, 2007, it was reported that the daily average PM2.5 was 67.2 µg/m3. The second highest recorded PM2.5 in 17 years. So my question is what could have been the cause of this? I'm trying to find data, but it's difficult to pinpoint a specific day. I was wondering if you guys had any resources or any ideas as to why this could have been?

    Thank you

    1. What location are you concerned about? Please respond to us directly with your questions. Contact details are at Questions of this nature submitted anonymously via the wildfire smoke blog will not otherwise get a timely response.


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