The air in Denver is less smoky than on Labor Day thanks to a cold front out of the north that replaced much of the bad air with cleaner air, officials say.
“A cold front helped to reduce the smoky air,” said Natalie Sullivan, meteorologist for the National Weather Service in Boulder. “A lot of the smoke has already cleared out.”
The Colorado Department of Public Health and Environment , predicting that ozone concentrations were supposed to improve from the moderate to unhealthy range on Monday to moderate to good range Tuesday.
The alert was issued at 4 p.m. Monday as widespread smoke primarily from northeast wildfires boosted fine particulate concentrations to unhealthy levels.
The advisory was effective through noon Tuesday along the northern Front Range from Boulder to Fort Collins. People with heart or lung disease, older adults and children were cautioned to avoid prolonged or heavy exertion.
“If smoke is thick or becomes thick in your neighborhood you may want to remain indoors,” the CDPHE warned.
Mark Salley, spokesman for CDPHE, said Tuesday morning that air quality experts will take air samples Tuesday and release updates on air quality.
An update Monday evening said there should be no public health impacts from the 710-acre Big Red wildfire in northeast Routt County, which is 15 miles north of Clark near the western edge of the Mt. Zirkel wilderness area.
