* WHAT...High temperatures between 98 and 102 degrees expected.

* WHERE...Fort Collins, Longmont, Boulder and the Denver metro.

* WHEN...From 10 AM to 9 PM MDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.

WWUS75 KBOU 081941
NPWBOU

Heat Advisory
National Weather Service Denver CO
141 PM MDT Tue Jul 8 2025
COZ038>040
/O.CON.KBOU.HT.Y.0002.250709T1600Z-250710T0300Z/
Larimer County Below 6000 Feet/Northwest Weld County-Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County

...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM TO 9 PM MDT WEDNESDAY...

* WHAT...High temperatures between 98 and 102 degrees expected.

* WHERE...Fort Collins, Longmont, Boulder and the Denver metro.

* WHEN...From 10 AM to 9 PM MDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses.
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

HEAT ADVISORY

larimer county below 6000 feet/northwest weld county

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 July 08 to 400 PM Wednesday July 09

IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor.  Unsettled weather conditions are expected
to limit ozone levels on Tuesday. Hot and dry weather on Wednesday
may allow ozone to reach levels that are Unhealthy for Sensitive
Groups in the northern portions of the Front Range region.   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.
Wednesday, July 9, 2025. 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...Increasing likelihood of respiratory symptoms
and breathing discomfort in active children and adults and people
with lung disease, such as asthma. Active children and adults, and
people with lung disease, such as asthma, should reduce prolonged
or heavy outdoor exertion.

AEUS75 KBOU 082210
AQABOU

Air Quality Alert
National Weather Service Denver CO
410 PM MDT Tue Jul 8 2025
COC001-005-013-014-031-035-059-069-123
Denver, CO-Boulder, CO-Jefferson, CO-Douglas, CO-Broomfield, CO-Weld, CO-Arapahoe, CO-Larimer, CO-Adams, CO

...OZONE ACTION DAY ALERT FROM 400 PM TUESDAY UNTIL 400 PM WEDNESDAY...

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 July 08 to 400 PM Wednesday July 09

IMPACTS...Ozone Action Day Alert is now in effect for the Front
Range Urban Corridor.  Unsettled weather conditions are expected
to limit ozone levels on Tuesday. Hot and dry weather on Wednesday
may allow ozone to reach levels that are Unhealthy for Sensitive
Groups in the northern portions of the Front Range region.   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.
Wednesday, July 9, 2025. 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...Increasing likelihood of respiratory symptoms
and breathing discomfort in active children and adults and people
with lung disease, such as asthma. Active children and adults, and
people with lung disease, such as asthma, should reduce prolonged
or heavy outdoor exertion.

Local Weather

Denver, Colorado, US