The visible haze on the Front Range caused by the Cameron Peak Fire created 'unhealthy' air in Northern Colorado this week, so while the weather may be nice today, it might be better to stay indoors if you are considered to be in the sensitive group.

For Thursday, September 17, Fort Collins, Greeley and Longmont 'will experience unhealthy air this morning improving to unhealthy for sensitive groups (USG) by lunchtime,' Cameron Peak Fire officials warn.

Photo taken 9/7/2020. TSM

Unhealthy air quality for sensitive groups will continue from Cheyenne to Denver through the evening hours.

'Sensitive populations, including individuals with forms of cardiovascular disease, the very young, and elderly should avoid heavy exertion today,' officials said. 'Everyone else should reduce prolonged exertion.'

Smoke Outlook
NorthCentralColorado - Cameron Peak Fire
Issued September 17, 2020, at 6:43 a.m. MDT

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Posted by Cameron Peak Fire on Thursday, September 17, 2020

Cameron Peak Fire is under ten percent contained and is believed to be human caused, but is under investigation.