The Colorado Department of Public Health and Environment and the Regional Air Quality Council issued an alert Saturday afternoon to warn people in the Front Range Urban Corridor, including the Loveland area, that the air could be unhealthy for sensitive groups due to wildfire smoke.

People in the area with heart or lung disease, older adults, and children were cautioned to reduce prolonged or heavy exertion on Saturday and Sunday.

The warning area includes the corridor from Douglas County north to Larimer and Weld counties, including the Denver-Boulder area, Fort Collins and Greeley.

Ozone and fine particulate concentrations could both reach the Unhealthy for Sensitive Groups category at times through at least Sunday afternoon across the Colorado Front Range region, the agencies said in a news release.

The biggest impact to air quality was expected to be for locations from the Denver Metro area northward along the I-25 corridor to Fort Collins, including areas west of I-25 within the foothills, especially in Larimer County due to smoke from the Cameron Peak wildfire.

This Multiple Pollutants Action Day Alert is in effect until at least 4 p.m. Sunday.

For more information on statewide conditions, forecasts and advisories, visit
https://www.colorado.gov/airquality/colorado_summary.aspx.