Douglas County, CO
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Thursday 06/11 4:10 PM MDT – Friday 06/12 4:00 PM MDT
Issued by NWS Denver CO
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 11 to 400 PM Friday June 12
IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot and sunny weather will lead to increased ozone through Friday afternoon. 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. Friday, June 12, 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.
Areas Impacted
- Weld, CO
- Broomfield, CO
- Larimer, CO
- Adams, CO
- Jefferson, CO
- Douglas, CO
- Arapahoe, CO
- Denver, CO
- Boulder, CO
Tips to Stay Safe
When an Air Quality Alert is active for your location:
- Check the air quality levels in your area at airnow.gov.
- Limit your time outdoors, especially if you are at higher risk. This includes seniors, children, or those with asthma or other health conditions.
In effect from Thursday 06/11 10:10 PM MDT – Friday 06/12 4:00 PM MDT
Issued by NWS Denver CO
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 11 to 400 PM Friday June 12
IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot and sunny weather will lead to increased ozone through Friday afternoon. 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. Friday, June 12, 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.
Areas Impacted
- Boulder, CO
- Douglas, CO
- Arapahoe, CO
- Adams, CO
- Jefferson, CO
- Weld, CO
- Denver, CO
- Broomfield, CO
- Larimer, CO
Tips to Stay Safe
When an Air Quality Alert is active for your location:
- Check the air quality levels in your area at airnow.gov.
- Limit your time outdoors, especially if you are at higher risk. This includes seniors, children, or those with asthma or other health conditions.
Briefings
From the Forecaster
Today's Forecast
Created by the NWS Denver/Boulder WFO
Sunny and hot conditions are expected across the plains today, with warm and breezy conditions for the mountains and valleys. Could see brief and patchy elevated to near-critical fire weather conditions this afternoon across the higher elevations, though green-up is helping to mitigate fire hazards in areas where winds will be strongest.
Seven-day Weather Risk Overview
The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.
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