DENVER — If you have been outside, it may not be a surprise to many in the Denver metro area, but the Mile High City ranked as the most polluted global major city in the country on Monday, according to IQAir.
State air quality officials say hot temperatures and wildfire smoke are causing elevated levels of both ozone and fine particulate pollution. An ozone action day alert is in effect for Colorado’s Front Range Urban Corridor through at least 4 p.m. Tuesday.
IQAir data shows Denver outranked major U.S. cities, including Los Angeles and Portland, in terms of poor air quality on Monday.
Dr. Laurie Manka, a pulmonologist with National Jewish Health, said Denver’s geography makes the city especially vulnerable to pollution…