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Photos: 14 Colorado counties' (mostly lousy) ozone pollution grades from worst to best

The American Lung Association's massive

State of the Air

report for 2014 is out, with the organization grading places all over the country in terms of air pollution, including Colorado.

Ozone-pollution figures for fourteen Colorado counties were available, and the ALA's judgments are harsh: Eight of the counties get grades of "D" or "F," with only two earning an "A." We ranked the photo-illustrated results, using data in other categories as tiebreakers and giving extra credit for providing data even if the scores are iffy. Count them down below.

Number 9: Jefferson County Number 8: Weld County Number 7 (tie): Douglas County Continue to keep counting down the (mostly lousy) ozone pollution grades of nine Colorado counties. Number 7 (tie): Arapahoe County Number 6 (tie): Denver County Number 6 (tie): Boulder County Continue to keep counting down the (mostly lousy) ozone pollution grades of nine Colorado counties. Number 6 (tie): Adams County Number 5 (tie): El Paso County Number 5 (tie): La Plata County Continue to keep counting down the (mostly lousy) ozone pollution grades of nine Colorado counties. Number 4: Rio Blanco County Number 3 (tie): Gunnison County Number 3 (tie): Garfield County Continue to keep counting down the (mostly lousy) ozone pollution grades of nine Colorado counties. Number 2: Pitkin County Number 1: Mesa County

Here's the complete State of the Air 2014 report.

American Lung Association State of the Air 2014 Report

Send your story tips to the author, Michael Roberts.

More from our Environment archive circa April 17: "Photos: Top ten solar cities in the U.S. -- and why Denver's finish isn't good enough."

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