The American Lung Association believes the air quality in Denver is deteriorating.
Researchers say an intensive campaign to measure air pollution along Colorado’s northern Front Range will produce a wealth of data to help identify the sources and levels of ozone.
This spring, runny eyes and a stuffed up nose may not be the result of seasonal allergens.
The American Lung Association put out its annual report on Wednesday. It assigns letter grades to counties along the Front Range. The grades are based on information gathered from air monitoring stations.