Air Quality Alert
AZC013-190400-
Air Quality Alert
Relayed by National Weather Service Phoenix AZ
735 AM MST Thu Jul 17 2025
...OZONE HIGH POLLUTION ADVISORY FOR MARICOPA COUNTY INCLUDING THE
PHOENIX METRO AREA FRIDAY...
The Arizona Department of Environmental Quality (ADEQ) has issued an
Ozone High Pollution Advisory for the Phoenix Metro Area on Friday.
This means that forecast weather conditions combined with existing
ozone levels are expected to result in local maximum 8-hour ozone
concentrations that pose a health risk. Adverse health effects
increase as air quality deteriorates.
Ozone is an air contaminant which can cause breathing difficulties
for children, older adults, as well as persons with respiratory
problems. A decrease in physical activity is recommended.
You are urged to car pool, telecommute or use mass transit.
The use of gasoline-powered equipment should be reduced or done late
in the day.
For details on this High Pollution Advisory, visit the ADEQ internet
site at www.azdeq.gov/forecast/phoenix or call 602-771-2300.
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Grand Junction CO
423 AM MDT Thu Jul 17 2025
COZ001>014-017>023-UTZ022>025-027>029-181030-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
423 AM MDT Thu Jul 17 2025
This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.
.DAY ONE...Today and tonight.
Increasing moisture today brings widespread showers and
thunderstorms across the southern mountains with coverage more
scattered on the higher terrain farther north this afternoon and
evening with localized heavy rain and gusty outflows possible in
storms. Wildfire smoke remains visible across much of the CWA.
.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
The moisture in the region keeps scattered to widespread showers
and thunderstorms on terrain in the forecast through Saturday with
localized heavy rain possible in some of these storms. Conditions
dry out Sunday into early next week with a return of near critical
fire weather conditions. Wildfire smoke will remain visible for much
of eastern Utah and western Colorado.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected today or tonight, however
spotters are encouraged to report excessive wind or observed wind
related damage, and to relay rainfall amounts or any observed
flooding to the National Weather Service in Grand Junction.
$$
