Active Weather Alerts
Air Quality Alert
Issued: 10:10 PM Jun. 19, 2025 – National Weather Service
...OZONE ACTION DAY ALERT FROM 400 PM THURSDAY UNTIL 1200 AM FRIDAY... 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 Thursday June 19 to 1200 AM Friday June 20 IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot, stagnant weather on Thursday will allow ozone to reach the Unhealthy for Sensitive Groups category. The highest ozone concentrations are expected in southern and western portions of the Denver Metro area, along the I-25 corridor towards Fort Collins, and Greeley. Ozone levels will improve to the Good to Moderate range by Friday. 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 midnight, Thursday night, June 19, 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.
Heat Advisory
Issued: 10:34 AM Jun. 19, 2025 – National Weather Service
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM FRIDAY TO 6 PM MDT SATURDAY... * WHAT...High temperatures near 100 degrees across the I-25 Urban Corridor, and up to 103 across the eastern plains. * WHERE...All of the I-25 Urban Corridor, northeast and east central plains of Colorado. * WHEN...The worst heat will be from 11 AM to 6 PM MDT both Friday and Saturday. * IMPACTS...Hot temperatures may cause heat related illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 late evening. Take action when you see symptoms of heat exhaustion and heat stroke. &&
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