Denver's allergy season shortens, contrasting national trend

Data: Climate Central; Chart: Alice Feng/Axios

Allergy season is growing in most cities, but not in Denver.

Driving the news: In the Mile High City, allergy season fell by 15 days on average between 1970 and 2021, per an analysis from Climate Central, a nonprofit climate news organization, Alex Fitzpatrick and Alice Feng report.

Alayna Alvarez
May 18, 2023 - News

Miller moths may linger longer around Denver this migration season

It's miller time. Photo: Courtesy of Whitney Cranshaw/Colorado State University

You might be chasing out miller moths from your house for longer than usual this year.

What's happening: The critters Coloradans love to hate — but which play a key ecological role as a primary food source for birds, bats and bears — are making their infamous annual migration from the state's Eastern Plains to the mountains in search of flowers.

How rainy spring days will help Colorado's wildfire season

Rushing water in the South Platte River at Confluence Park last week in Denver. Photo: RJ Sangosti/MediaNews Group/The Denver Post via Getty Images

The rainy weather along the Front Range will provide a reprieve from wildfire conditions in Colorado.

Driving the news: The constant downpour late last week will mean greener grass, which is harder to catch fire or carry flames if a blaze breaks out, National Weather Service Denver forecast office meteorologist David Barjenbruch tells us.

Air quality in Denver is getting worse

Data: EPA; Note: A concentration below 12 micrograms per cubic meter is considered healthy; Chart: Axios Visuals

Air quality has deteriorated across the Denver metro area since 2015, the latest data from the Environmental Protection Agency shows.

  • Last September, the EPA officially downgraded the Front Range from a "serious" to "severe" air quality violator after repeated offenses of federal ozone standards.

Global warming is "juicing" home runs at ballparks

Colorado Rockies player Kris Bryant prepares to bat during a game against the Washington Nationals at Coors Field on April 8. Photo: Dustin Bradford/Getty Images

Coors Field's reputation as a home-run mecca could get a boost from an unlikely — and unwanted — element: global warming.

Driving the news: Global warming is now leading to more home runs in the MLB, according to an analysis by Dartmouth College scientists published earlier this month in the Bulletin of the American Meteorological Society.


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