CDPHE Air Pollution Control Division

An Air Quality Health Advisory for Ozone has been issued for Teller, El Paso, Pueblo, and eastern Fremont Counties. Take it easy outdoors in these areas on Saturday.
https://www.colorado.gov/airquality/colo_advisory.aspx

An Air Quality Health Advisory for Wildfire Smoke is in effect in southeast Colorado. Periods of moderate to heavy smoke are possible throughout the day.

For more information: https://www.colorado.gov/airquality/colo_advisory.aspx

An Ozone Action Day Alert is in effect until Midnight Friday night. Ozone may reach the Unhealthy for Sensitive Groups category in Denver, Greeley, and surrounding areas.

For more information: https://www.colorado.gov/airquality/advisory.aspx?county=weld

Ozone concentrations in the Unhealthy for Sensitive Groups category are possible on Monday and Tuesday in the northern Colorado Front Range, including the Denver Metro area, Fort Collins, Greeley, and the surrounding areas. Move activity indoors or reduce your level of exertion if possible on Monday and Tuesday afternoon. https://www.colorado.gov/airquality/advisory.aspx

It’s Air Quality Awareness Week.

Do you want to receive updates about air quality near you? Sign up for Air Quality Alert notifications!

Visit colorado.gov/airquality/request_alerts.aspx.
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Es la Semana de Concientización sobre la Calidad del Aire.

¿Deseas recibir novedades sobre la calidad del aire en tu zona? Inscríbete para recibir alertas sobre la calidad del aire.

Visita https://www.colorado.gov/airquality/request_alerts.aspx

¡Estamos celebrando la Semana de Concientización sobre la Calidad del Aire!

Los objetivos de esta iniciativa a nivel nacional son compartir información sobre la importancia del aire limpio, las medidas que se están abordando para combatir la contaminación del aire y los recursos disponibles para seguir colaborando.

https://cdphe.colorado.gov/press-release/air-quality-awareness-week-2026

We are celebrating Air Quality Awareness Week! The goal of the nationwide initiative is to share information about the importance of clean air, ongoing work to address air pollution, and resources to stay engaged.

https://cdphe.colorado.gov/press-release/air-quality-awareness-week-2026

Elevated ozone from Denver southward to Colorado Springs and Pueblo Monday afternoon and evening, including the adjacent foothills and high plains. Limit outdoor exercise, esp. those with asthma or other respiratory ailments. https://www.colorado.gov/airquality/colorado_summary.aspx

Although air quality has improved across parts of eastern Colorado, smoke lingers in southeastern parts of the state. Air Quality Advisory extended thru 9am Saturday. https://colorado.gov/airquality/colo_advisory.aspx https://colosmokeoutlook.blogspot.com

Air Quality Health Advisory for Wildfire Smoke for large parts of eastern Colorado. Improving air quality during the morning for northeastern Colorado, but smoke could linger into this afternoon for southeastern parts of the state. https://www.colorado.gov/airquality/colo_advisory.aspx https://colosmokeoutlook.blogspot.com/