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Home»World»Brown haze across Colorado’s Front Range triggers air-quality alerts
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Brown haze across Colorado’s Front Range triggers air-quality alerts

November 22, 2024No Comments2 Mins Read
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A brown haze settled over the Entrance Vary this week, main the state to problem bans on indoor fires and to advise individuals to keep away from driving as a lot as attainable.

Colorado public well being officers additionally issued a warning that stated reasonable air high quality might trigger respiration issue for individuals with lung and coronary heart illness. They had been suggested to keep away from heavy bodily exertion exterior.

Nevertheless it’s not summer time ozone season. So what’s inflicting the poor air high quality?

It’s the time of yr when temperatures drop and the air stagnates, stated Scott Landes, lead air high quality meteorologist on the Colorado Division of Public Well being and Atmosphere. The winter air pollution season lasts from Oct. 31 to March 31.

“Throughout the winter months, we see a build-up of pollution close to the Earth’s floor as a result of it might’t escape into the ambiance,” Landes stated.

These pollution are largely effective particulate matter, often known as PM2.5. Nice particulate matter is brought on by the identical sources as summer time ozone air pollution — car visitors and industrial manufacturing, Landes stated. In the summertime, wildfire smoke additionally causes particulate matter to hold within the air.

To scale back the quantity of air pollution on winter days, the state well being division points Motion Day for Visibility alerts by way of its Winter Excessive Air pollution Advisory Program that ask individuals to drive much less and keep away from indoor fires until they’ve an Environmental Safety Company-approved wood-burning range. Individuals who warmth their properties solely by burning wooden are exempted from the ban, Landes stated.

This week’s visibility alert extends by way of 4 p.m. Friday and it’s efficient in Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas and Jefferson counties, in keeping with the state’s air high quality web site. The alert may very well be prolonged if the climate doesn’t change.

The Nationwide Climate Service forecast requires heat climate by way of Saturday. A change is forecast for late Sunday with a chance of rain and snow and far colder temperatures at first of the week.

A gentle snow would clear the air, Landes stated.

“Snow does a extremely nice job of scouring the air,” he stated.

Get extra Colorado information by signing up for our Mile Excessive Roundup e-mail publication.

Initially Printed: November 22, 2024 at 8:28 AM MST

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