Denver’s air is bad today. It’s expected to be worse Thursday and Friday.

Colorado wellness officials are anticipating “very mediocre aerial quality” on the Front Range done the play arsenic fume wafting from California wildfires mixes with elevated ozone pollution.

State wellness officials person issued ozone “action day” alerts for 30 days successful a enactment — each time since July 24 mounting a caller grounds — urging residents to mow lawns and refuel vehicles aft 5 p.m.

A caller surge of fume from ample fires successful bluish California volition summation some ozone and good particulate contamination done the weekend, Colorado Department of Public Health and Environment meteorologist Scott Landes said Wednesday morning.

“Smoke volition dispersed from westbound to eastbound crossed Colorado into Thursday,” Landes said. He besides said that fires connected the Western Slope “that person been beauteous quiet” whitethorn commencement backmost up connected Friday with drier and windier conditions, which “could adhd immoderate further fume to the premix for the Front Range.”

Temperatures are expected to scope up to 95 degrees this weekend, which volition favour accrued enactment of ozone arsenic contamination from vehicles and industries bakes successful sunlight.

State wellness officials person issued wellness advisories owed to ozone on the Front Range from Fort Collins to Colorado Springs, recommending older people, children, and radical with respiratory and different wellness problems minimize outdoor activity.

The ozone levels measured astatine authorities stations amusement mean concentrations consistently higher than the 70 parts per cardinal national wellness limit.

Over the past week, authorities wellness bulletins person warned of “multiple pollutants,” akin to the play betwixt Aug. 11-16, 2020, erstwhile wildfire fume mixed with ozone.

Recent rains person brought immoderate relief, arsenic important rainfall and thunderstorms tin alteration some good particulates and ozone. But aerial contamination power officials accidental higher humidity besides tin summation the concentrations of good particulates and ozone.