Update: Ozone pollution alert affecting Central Colorado until early Monday evening

Published Aug 11, 2025

At 10:10 a.m. on Monday, the National Weather Service reported an updated air quality alert in effect until 4 p.m. for Central Colorado.

The NWS adds to be ready for, “Ozone Action Day Alert.”

The full list of affected locations includes:

• Boulder County

• Jefferson County

• Broomfield County

• Arapahoe County

• Larimer County

• Adams County

• Weld County

• Denver County

• Douglas County

Air quality alerts: Recommendations from the NWS

When an air quality alert pops up on the radar, deciphering its implications is crucial. These alerts, issued by the NWS, come with straightforward yet essential guidance to ensure your safety:

Retreat indoors whenever feasible:

If it’s within your means, stay indoors, especially if you have respiratory issues, health concerns, or fall within the senior or child demographics.

Minimize outdoor ventures:

When you can’t avoid going outdoors, keep outdoor activities to the bare essentials. Reducing your time outdoors is the key.

Mitigate pollution sources:

Be mindful of activities that exacerbate pollution, such as driving cars, operating gas-powered lawnmowers, or using other motorized vehicles. Limit their use during air quality alerts.

Banish open burning:

Avoid burning debris or any other materials during air quality alerts. This contributes to worsened air quality.

Stay informed:

Stay updated of developments by tuning in to NOAA Weather Radio or your preferred weather news source. Being well-informed empowers you to make informed decisions regarding outdoor pursuits during air quality alerts.

Focus on respiratory health:

If you have respiratory issues or health problems, exercise extra caution. These conditions can make you more vulnerable to the adverse effects of poor air quality.

By adhering to the advice from the NWS, you can enhance your safety during air quality alerts while reducing your exposure to potentially harmful pollutants. Stay aware, stay protected, and make your health a top priority.

Source: The National Weather Service