Air Quality Alert

IDC035-049-251800-
Clearwater-Idaho-
438 PM MDT Sat Aug 23 2025 /338 PM PDT Sat Aug 23 2025/

An Air Quality Alert has been issued by the following agencies:

Idaho Department of Environmental Quality in Lewiston
Nez Perce Tribe ERWM Air Quality Program

* WHAT...Air Quality Advisory due to smoke from wildfires.

Air Quality Index is forecast to be Unhealthy.

* WHERE...Clearwater and Idaho Counties and the Nez Perce
  Reservation.

* WHEN...Until Monday morning, August 25th.

* IMPACTS...Those who experience health effects from smoke include
  children under 18, elders, pregnant women, people with asthma
  or have difficulty breathing, diabetes, heart problems or
  otherwise compromised health, and people who have high exposure
  (those who work, exercise, or spend extensive time outdoors).

PRECAUTIONARY/PREPAREDNESS ACTIONS...
Under the most severe pollution level, sensitive groups should avoid
outdoor exposure and limit indoor activities, and everyone should
restrict their outdoor activities.

Idaho Department of Health and Welfare
https://healthandwelfare.idaho.gov/health-wellness/environmental-
health/idaho-wildfire-and-smoke-information

Idaho Smoke Information Hotline: 1-800-345-1007

Lewiston Regional Office: (208) 799-4370.

$$

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Riverton WY
1157 AM MDT Sat Aug 23 2025

WYZ001>020-022>030-241300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-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-
Natrona County Lower Elevations-Casper Mountain-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-
1157 AM MDT Sat Aug 23 2025

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...This Afternoon and Tonight.

A possible thunderstorm or two over or the northern mountains late
Saturday afternoon. Wildfire smoke may reduce visibility late
tonight across Sublette County.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Sunday...A slight chance of thunderstorms across mainly the southern
half of the state. The primary hazard will be gusty outflow wind,
especially along and south of Interstate 80.

Monday through Friday...Daily chances for thunderstorms as moisture
from the southwest U.S. steadily increases through midweek.
Wednesday and Thursday look like the most active days. Rainfall will
vary widely, but the best chance for accumulating rain will be along
and west of the Continental Divide.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

$$