# Air Quality Alert: Larimer, CO; Weld, CO; Broomfield, CO; Arapahoe, CO; Boulder, CO; Douglas, CO; Adams, CO; Denver, CO; Jefferson, CO — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/dfe76842629cc7fd

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-06-30 09:11 ingested 2026-07-01 09:54

[original source ↗](http://www.weather.gov/)

## extract

Air Quality Alert — Larimer, CO; Weld, CO; Broomfield, CO; Arapahoe, CO; Boulder, CO; Douglas, CO; Adams, CO; Denver, CO; Jefferson, CO
Severity: Unknown. Certainty: Unknown.
The Colorado Department of Public Health and Environment has
issued the following...

WHAT...Action Day Alert for Multiple Pollutants.

WHERE...Douglas, Jefferson, Denver, western Arapahoe, western
Adams, Broomfield, Boulder, Larimer, and Weld Counties

WHEN...400 PM Monday June 29 to 400 PM Tuesday June 30

IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor.  Hot, sunny, and occasionally smoky weather
conditions will result in ozone concentrations occasionally
reaching the Unhealthy for Sensitive Groups category on Monday and
Tuesday. Particle pollution levels could also reach the Unhealthy
for Sensitive Groups category, or worse, due to the wildfire
smoke.  For Colorado air quality conditions, forecasts, and
advisories, visit:
https://www.colorado.gov/airquality/colorado_summary.aspx   If
possible, please help us reduce ozone pollution by limiting
driving gas and diesel-powered vehicles until at least 4 p.m.
Tuesday, June 30, 2026. Colorado is also addressing ozone
pollution through state policies. For more information about
health impacts and how ozone pollution forms in Colorado, visit:
https://cdphe.colorado.gov/ozone- pollution-and-your-health

HEALTH INFORMATION...People with heart or lung disease, older
adults, and children should reduce prolonged or heavy exertion.
During periods of heavier wildfire smoke, everyone should reduce
prolonged or heavy exertion.

## retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.