Cheyenne, Casper net good air quality grades; Sublette County ranks worst

2013-04-24T22:00:00Z Cheyenne, Casper net good air quality grades; Sublette County ranks worstBy ADAM VOGE Star-Tribune energy reporter Casper Star-Tribune Online

Casper and Cheyenne have some of the cleanest air in the country, and Sublette County is among the most polluted counties, according to a study by the American Lung Association.

The group released its annual “State of the Air” study Wednesday. Wyoming’s two most populous cities both ranked highly.

Cheyenne received an “A” from the association for its low levels of average particle pollution for 2012, a measure of how many fine liquids or solids are in the air. The capital city ranked first in the country in the standard, edging out cities in Utah, Arizona and New Mexico.

The Los Angeles and Bakersfield, Calif., metros were named the most-polluted cities for air quality.

Casper also fared well in the rankings, earning an “A” in average particle pollution. Data on ozone levels in Casper and Cheyenne, another criterion measured by the association, wasn’t available.

Of the eight Wyoming counties that did receive a grade, only Sublette County received an “F.”

The county and the surrounding area were recently placed on an EPA “nonattainment” list for excessive levels of ozone, a toxic gas, largely as a result of natural gas drilling. State regulators have announced a plan to address the pollution and bring the area back into compliance by 2015, a federal deadline.

But the county didn’t score exclusively bad marks — it received an “A” in particle pollution.

Association staff compiled the rankings using U.S. Environmental Protection Agency data.

“It was just a few years ago that we learned of the ozone pollution happening during Wyoming winters,” said Renée Klein, president and chief executive officer of the association’s Mountain Pacific Region. “So there’s definitely more work to do to clean up sources of pollution to protect the health of our citizens.”

Of the other counties graded, only Fremont County approached a failing grade in either ranked category, receiving a “D” in ozone and a “B” in particle pollution.

Uinta, Teton, Park, Sweetwater, Crook and Carbon counties all received an A or B in every category. Grades weren’t given to any other Wyoming counties. According to the association, the data needed to award a grade were not available for many counties and cities in Wyoming.

Reach energy reporter Adam Voge at 307-266-0561, or at Read his blog at or follow him on Twitter @vogeCST.

Copyright 2015 Casper Star-Tribune Online. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

(1) Comments

  1. Pops
    Report Abuse
    Pops - April 25, 2013 9:47 am
    Oh,Good, We still have a passable atmosphere in some of Wyo.
Untitled Document

Civil Dialogue

We provide this community forum for readers to exchange ideas and opinions on the news of the day. Passionate views, pointed criticism and critical thinking are welcome. Name-calling, crude language and personal abuse are not welcome. Moderators will monitor comments with an eye toward maintaining a high level of civility in this forum. Our comment policy explains the rules of the road for registered commenters.

If your comment was not approved, perhaps...

  1. You called someone an idiot, a racist, a dope, a moron, etc. Please, no name-calling or profanity (or veiled profanity -- #$%^&*).

  2. You rambled, failed to stay on topic or exhibited troll-like behavior intended to hijack the discussion at hand.

  3. YOU SHOUTED YOUR COMMENT IN ALL CAPS. This is hard to read and annoys readers.

  4. You have issues with a business. Have a bad meal? Feel you were overcharged at the store? New car is a lemon? Contact the business directly with your customer service concerns.

  5. You believe the newspaper's coverage is unfair. It would be better to write the editor at, or call Editor Jason Adrians at 266-0545 or Content Director David Mayberry at 266-0633. This is a forum for community discussion, not for media criticism. We'd rather address your concerns directly.

  6. You included an e-mail address or phone number, pretended to be someone you aren't or offered a comment that makes no sense.

  7. You accused someone of a crime or assigned guilt or punishment to someone suspected of a crime.

  8. Your comment is in really poor taste.

Add Comment
You must Login to comment.

Click here to get an account it's free and quick