Air Quality Alert

MTC001-023-039-053-061-081-089-071445-

URGENT - IMMEDIATE BROADCAST REQUESTED
AIR QUALITY ALERT
MONTANA DEPARTMENT OF ENVIRONMENTAL QUALITY HELENA MT
Relayed by National Weather Service Great Falls MT
Issued by National Weather Service Missoula MT
839 AM MDT Sat Sep 6 2025

...Air Quality Alert from the Montana Department of Environmental
Quality is in Effect...

The Montana Department of Environmental Quality has issued an air
quality alert for Beaverhead, Deer Lodge, Granite, Lincoln,
Mineral, Ravalli, Sanders counties in effect until 9AM on
09/07/2025 An Air Quality Alert means that particulates have been
trending upwards and that an exceedance of the 24 hour National
Ambient Air Quality Standard (NAAQS) has occurred or may occur in
the near future.

An Air Quality Alert means that particulates have been trending
upwards and that an exceedence of the 24 hour National Ambient
Air Quality Standard (NAAQS) has occurred or may occur in the
near future.

As of 7AM on 09/06/2025, particulate levels in Hamilton and Libby
are Unhealthy for Sensitive Groups.

As of 7AM on 09/06/2025, particulate levels in Billings, Butte,
Columbia Falls, Dillon, Frenchtown, Helena, Lewistown, Missoula,
Seeley Lake, Thompson Falls and West Yellowstone are Moderate.

When air quality is Unhealthy...State and local health officials
recommend that people with respiratory or heart disease...the
elderly...and children should avoid prolonged exertion; everyone
else should limit prolonged exertion.

For more information visit the Montana Department of Environmental
Quality at www.todaysair.mt.gov

$$

WYZ001-002-012>019-023>030-071900-
Yellowstone National Park-Absaroka Mountains-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
Including the cities of Lake, Mammoth, Old Faithful, Jackson,
Dubois, Riverton, Shoshoni, Lander, Jeffrey City, Afton, Alpine,
Star Valley Ranch, Thayne, Pinedale, La Barge, Big Piney, Farson,
Kemmerer, Cokeville, Rock Springs, Green River, and Wamsutter
1102 AM MDT Fri Sep 5 2025

...AIR QUALITY ALERT IN EFFECT UNTIL 1 PM MDT SUNDAY...

The following message is transmitted on behalf of the Wyoming
Department of Environmental Quality, Air Quality Division, and the
Wyoming Department of Health.

* WHAT...Air Quality Alert for Wildfire Smoke.

* WHERE...Much of western Wyoming, generally along and west of a line
  from the Absaroka Mountains to the Wind River Basin and Green
  Mountains.

* WHEN...1 PM Friday, September 5, until 1 PM Sunday, September 7.

* IMPACTS...Smoke from distant wildfires burning in Idaho,
  Washington, and especially British Columbia, are responsible for a
  large amount of the recent smoke. In Wyoming, the Dollar Lake
  wildfire north-northwest of Pinedale will continue to push smoke
  into the Upper Green River Basin given the prevailing wind
  direction.

HEALTH INFORMATION...The Wyoming Department of Health recommends
that the elderly, young children, and individuals with respiratory
problems avoid excessive physical exertion and minimize outdoor
activities during this time. Wildfire smoke is made up of a variety
of pollutants, including particulate matter and ozone, which can
cause respiratory health effects. Although these people are most
susceptible to health impacts, the Department of Health also advises
that everyone should avoid prolonged exposure to poor air quality
conditions.

CURRENT CONDITIONS...The Wyoming Department of Environmental
Quality, Air Quality Division offers near real-time air quality data
for Wyoming`s monitoring stations and health effects information to
help the public interpret current conditions. Current air quality
conditions across the state of Wyoming can be found at
http://www.wyvisnet.com/.

$$

IDC035-049-081800-
Clearwater-Idaho-
951 AM MDT Fri Sep 5 2025 /851 AM PDT Fri Sep 5 2025/

...AIR QUALITY ADVISORY FROM THE IDAHO DEPARTMENT OF ENVIRONMENTAL
QUALITY FOR Clearwater and Idaho Counties...

* WHAT...Air Quality Advisory because of stagnant weather
conditions.

Air Quality Index is forecast to be Unhealthy.

* WHERE...Clearwater and Idaho Counties.

* WHEN...Until 11am PDT 9/8/2025

* IMPACTS...Some members of the general public may experience health
  effects; members of sensitive groups may experience more serious
  health effects.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
Air pollutants can cause breathing difficulties for children, the
elderly, as well as persons with respiratory problems. Those
individuals who are sensitive to increased particulate matter or
smoke are encouraged to avoid prolonged or strenuous outdoor
activity during this advisory. Open burning is prohibited by air
quality rule. It is also recommended that all other individuals
limit prolonged or strenuous activity outdoors.

THIS STATEMENT IS ISSUED BY THE IDAHO DEPARTMENT OF ENVIRONMENTAL
QUALITY, AIR QUALITY GROUP FOR MORE INFORMATION, CONTACT DEQ`s
Lewiston Regional Office at (208) 799-4370

$$