Aspen pollution, temperatures high in September

By City of Aspen
Real AspenOctober 18, 2010
September’s PM10 particulate air pollution levels were higher than levels in July and August.

September was also the second-warmest month for daily high temperatures in the last 19 years of Aspen’s record.

“This is somewhat unusual because September usually has very low PM10 levels,” said Lee Cassin, director of the city’s Environmental Health Department. “I suspect is was due to all the hot and dry weather, as well as the traffic in town from leaf-peepers and the many special events we had this September.”

PM10 levels followed the typical pattern of increasing through the work week (due to traffic) and dropping over the weekends (when traffic is much lower). PM10 in Aspen is caused almost exclusively by traffic on high PM10 days. PM10 is thought to be responsible for tens of thousands of deaths a year in the U.S., including at levels sometimes experienced in Aspen.

Average September temperatures keep getting warmer with each time period – with this September being warmer than even recent past averages.

“This September was also very dry in Aspen with less than an inch of rainfall,” Cassin said. “Colorado had its fifth warmest September on record.”

Nationwide, the warm season (April – September) had among the most extreme weather events on record, with some areas experiencing droughts while others had record precipitation. Different parts of the country also had different temperature extremes, with some places very hot and some cool. The official thermometer in Los Angeles broke after reaching an all-time high of 113 in September.

comments: 0 Comments on "Aspen pollution, temperatures high in September "

Be the first to comment below.

Comment Form Info  Comment Information
Real Aspen encourages you to post comments on our articles and blogs. Logged in email is required for monitoring purposes. Your email will not be published and will not be distributed to any third-party. Abusive, obscene, profane, threatening, libelous or defamatory comments are prohibited. By posting a comment, you agree to this policy and our terms of use. To report an abusive posting, please contact us.

To make a comment, please log in or create an account. This helps us prevent spam and other malicious attacks.

Please log in to comment


Create a user account to comment

Snow Report

  24hr snow mid dpth snow cond.
A-Basin n/a n/a
Aspen n/a n/a closed
BC n/a n/a closed
Breckenridge n/a n/a closed
Buttermilk n/a n/a closed
Copper n/a n/a closed
Crest. Butte n/a n/a closed
Eldora n/a n/a closed
Heavenly n/a n/a closed
Highlands n/a n/a
Howelsen n/a n/a closed
Keystone n/a n/a closed
Kirkwood n/a n/a closed
Loveland n/a n/a
Monarch n/a n/a closed
Northstar n/a n/a closed
Powderhorn n/a n/a closed
Purgatory n/a n/a closed
Silverton n/a n/a closed
Ski Cooper n/a n/a closed
Ski Granby n/a n/a closed
Snowmass n/a n/a closed
Steamboat n/a n/a closed
Sunlight n/a n/a closed
Telluride n/a n/a closed
Vail n/a n/a closed
WinterPark n/a n/a closed
Wolf Creek n/a n/a closed
More Weather Reports
A teaser to the Winter X Games in Aspen
Methane from Bill Koch's coal mine powers Aspen Skiing Company
'Circle of Corduroy'