Update: Ozone pollution alert issued for Central Colorado until early Tuesday

Published Jul 14, 2025

On Monday at 4:11 p.m. the National Weather Service reported an updated air quality alert in effect until Tuesday at midnight for Central Colorado.

The NWS says to anticipate, “Ozone Action Day Alert.”

The full list of affected locations includes:

• Arapahoe County

• Denver County

• Weld County

• Douglas County

• Broomfield County

• Jefferson County

• Larimer County

• Boulder County

• Adams County

Guidance for air quality alerts: Insights from the NWS

When an air quality alert is in effect, following the NWS guidance is pivotal. Here are some simple tips from the NWS for safeguarding your well-being:

Seek shelter indoors when possible:

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

Trim outdoor activities:

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

Scale back pollution-inducing practices:

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.

A ban on open burning:

Refrain from kindling fires with debris or any other materials during an air quality alert. Such practices only contribute to heightened air pollution.

Stay well-informed:

Keep yourself well-informed by tuning in to NOAA Weather Radio or your preferred weather news outlet. Staying in the loop empowers you to make informed decisions regarding outdoor engagements during air quality alerts.

Respiratory health matters:

If you have respiratory problems or underlying health conditions, exercise extra caution. These conditions can increase your vulnerability to adverse effects from poor air quality.

Following the recommendations from the NWS helps bolster your safety during air quality alerts, minimizing your exposure to potentially harmful pollutants. Stay vigilant, stay protected, and make your health the top priority.

Source: The National Weather Service