The map below shows the latest 1-hour ozone average for each monitoring site measured in parts per billion (ppb). The background color in each box represents the relative quality of the air based on the level of ozone that is being measured at each site. The measured ozone 1-hour levels have been mapped to background colors based on a projected eight-hour average calculated from the current one-hour level. To see all of today's measurements from a site, including the site name, click on the boxes.
Images are normally available on this server approximately 27 minutes past the hour. A new image is expected in 10 minutes. The latest image available is for Sunday November 22, 2009 18-19:00 MST. If the image below is older than this, you will need to force your browser to reload this page by clicking on the browser "Reload" or "Refresh" button.
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