Broomfield 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 Friday 06/12 4:10 PM MDT – Saturday 06/13 12:00 AM 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 Friday June 12 to 1200 AM Saturday June 13
IMPACTS...Ozone Action Day Alert is now in effect for the Front Range Urban Corridor. Hot, sunny, and stagnant conditions on Friday will allow ozone concentrations to reach the Unhealthy for Sensitive Groups level. On Saturday, breezy winds are expected, and ozone will reach the Moderate level. 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, Friday night, 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
- Larimer, CO
- Douglas, CO
- Boulder, CO
- Denver, CO
- Adams, CO
- Arapahoe, CO
- Broomfield, CO
- Jefferson, 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
Tonight's Lows
Created by the NWS Denver/Boulder WFO
Mostly clear tonight with lows in the 50's across the plains.
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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