Air Quality Alert issued January 3 at 3:10PM MST by NWS Denver CO

The Colorado Department of Public Health and Environment has
issued the following…

WHAT…Action Day for Particulates.

WHERE…Boulder, Broomfield, Adams, Denver, Jefferson, Arapahoe,
and Douglas Counties

WHEN…300 PM Friday January 03 to 400 PM Saturday January 04

IMPACTS…An Action Day for Particulates is now in effect for the
seven-county Denver-Boulder metropolitan area. Request to limit
driving gas and diesel-powered vehicles is now in effect until at
least 4 PM Saturday, January 4, 2025. Stagnant weather conditions
will result in fine particulate concentrations reaching the
Unhealthy for Sensitive Groups category, particularly in and near
the Denver metro area. Air quality should improve Saturday
afternoon into Saturday evening.For areas included in this
advisory that are not expected to exceed the Unhealthy for
Sensitive Groups (USG) air quality designation, we request that
activities, such as driving gas or diesel vehicles be reduced to
lessen the impacts on neighboring air quality. Additional air
pollution in this region may directly worsen air quality or
contribute to precursors which may also adversely affect air
quality. For Colorado air quality conditions, forecasts and
advisories, visit:
https://www.colorado.gov/airquality/colorado_summary.aspx

HEALTH INFORMATION…Increasing likelihood of respiratory symptoms
in sensitive individuals, aggravation of heart or lung disease and
premature mortality in people with cardiopulmonary disease and
older adults. People with heart or lung disease, older adults, and
children should reduce prolonged or heavy exertion.