Heat Advisory issued July 25 at 12:59AM MDT until July 25 at 9:00PM MDT by NWS Denver CO
Moderate weather warning
Upcoming
From Today 10:00 (3 hours from now)
Until Today 17:00 (10 hours from now)
Official warning explanations:
  • WHAT: Temperatures of 99 to 103 on both today and Sunday.

  • WHERE: Fort Collins, Boulder, Denver metro, and Greeley.

  • WHEN: From 10 AM to 9 PM MDT both today and Sunday.

  • IMPACTS: Hot temperatures may cause heat illnesses.

* WHAT...Temperatures of 99 to 103 on both today and Sunday. * WHERE...Fort Collins, Boulder, Denver metro, and Greeley. * WHEN...From 10 AM to 9 PM MDT both today and Sunday. * IMPACTS...Hot temperatures may cause heat illnesses.

Instructions:

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Air Quality Alert issued July 24 at 4:10PM MDT by NWS Denver CO
Now
From Friday 16:10 (14 hours ago)
Until Today 16:00 (9 hours from now)
Official warning explanations:

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 Friday July 24 to 400 PM Saturday July 25

IMPACTS,Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot and sunny weather will allow ozone to reach the Unhealthy for Sensitive Groups category on Friday and Saturday. The highest concentrations are expected in the Denver Metro Area. 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. Saturday, July 25, 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,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.

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 Friday July 24 to 400 PM Saturday July 25 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot and sunny weather will allow ozone to reach the Unhealthy for Sensitive Groups category on Friday and Saturday. The highest concentrations are expected in the Denver Metro Area. 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. Saturday, July 25, 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...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.

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