ALT Ozone alert text in blue in a yellow text box, on a blue background. Logos at the bottom.

ALT Yellow text on blue background. Text reads, "ozone action day alert." CDPHE Logo at the bottom.

ALT Aerial view of Denver skyline with mountains in the background. Yellow text that reads, "ozone action day alert." CDPHE Logo at the bottom.

ALT Ozone alert text in blue on a yellow background. Text box overlaid on image of Denver cityscape, shaded blue, Logos at the bottom.

ALT A gold text box on a blue background that reads, "Ozone action day alert".

ALT Blue background with yellow text that reads, "air quality health advisory: ozone pollution." CDPHE Logo at the bottom.

ALT Downtown Denver skyline with yellow text that reads, "ozone action day alert." CDPHE Logo at the bottom.

ALT Air quality advisory text in blue in yellow text box, on a blue background. Logos at the bottom.

ALT Blue background with text that reads, "air quality health advisory: ozone pollution." CDPHE Logo at the bottom.

ALT Blue background with text that reads, "Air Quality Health Advisory: Ozone Pollution." CDPHE Logo at the bottom.

ALT View of high rise buildings in downtown denver. Text on image reads, "air quality advisory: High ozone and particulate pollution." CDPHE logo at the bottom.

ALT Blue background with text that reads, "Air Quality health advisory: ozone pollution." CDPHE Logo at the bottom.

ALT Map of Colorado showing counties covered by Smoke advisories in Gray and Action Day for Multiple Pollutants in purple.

ALT Blue background with text that reads, "Air Quality Advisory: High ozone and particulate Pollution." CDPHE Logo at the bottom.

ALT "Air Quality Advisory" text on yellow square with blue background. CDPHE Logo at the bottom.

ALT Smoke in the sky. Text on image reads "air quality advisory: wildfire smoke." CDPHE logo at the bottom.

ALT Advisory text in white and yellow on a blue background. Text box overlaid on image of Denver skyline with a hazy sunset in the background. Logos at the bottom.