Weather Alerts for Colorado:Denver Area

Issued by the National Weather Service

Complete Map Details displayed if included in issuing NWSFO statement content

Air Quality Alert  AIR QUALITY ALERT   Air Quality Alert

Areas Affected:
Adams - Arapahoe - Boulder - Broomfield - Denver - Douglas - Jefferson - Larimer - Weld
Effective: Tue, 6/15 7:10pm Updated: Tue, 6/15 10:00pm Urgency: Unknown
Expires: Wed, 6/16 6:00pm Severity: Unknown Certainty: Unknown

The Colorado Department of Public Health and Environment has
issued the following...
WHAT...Ozone Action Day Alert.
WHERE...Douglas, Jefferson, Denver, western Arapahoe, western
Adams, Broomfield, Boulder, Larimer, and Weld Counties
WHEN...400 PM Tuesday June 15 to 400 PM Wednesday June 16
IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor. Requests to limit driving of non-ZEV
vehicles (i.e., gas or diesel) are now in effect until at least 4
p.m. Wednesday, June 16, 2021.  Ozone concentrations are expected
to be in the Moderate to Unhealthy range on Tuesday and Wednesday.
Concentrations of ozone in the Unhealthy for Sensitive Groups to
Unhealthy range are most likely for locations in the southern and
western portions of the Denver metro area, and northward along the
Front Range and lower foothills to include Boulder, Longmont, Fort
Collins, and Greeley. For areas included in this advisory that are
not expected to reach the Unhealthy for Sensitive Groups (USG) air
quality designation, we request that activities, such as driving
non-ZEV vehicles (i.e., gas or diesel), 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:
HEALTH INFORMATION...Greater likelihood of respiratory symptoms
and breathing difficulty in active children and adults and people
with lung disease, such as asthma; possible respiratory effects in
general population. Active children and adults, and people with
lung disease, such as asthma, should avoid prolonged or heavy
outdoor exertion; everyone else, especially children, should
reduce prolonged or heavy outdoor exertion.