Air Quality Alert
AZC013-290400-
Air Quality Alert
Relayed by National Weather Service Phoenix AZ
833 AM MST Fri Nov 28 2025
...PM-2.5 HIGH POLLUTION ADVISORY FOR MARICOPA COUNTY INCLUDING THE
PHOENIX METRO AREA FRIDAY...
The Arizona Department of Environmental Quality (ADEQ) has issued a
PM-2.5 High Pollution Advisory for the Phoenix Metro Area on Friday.
This means that ongoing stagnant weather conditions combined with
existing airborne fine particulate levels may result in local fine
particulate concentrations that pose a health risk. Adverse health
effects increase as air quality deteriorates.
Fine particulate matter - also known as PM-2.5 - is an air
contaminant that can aggravate heart and lung disease conditions,
especially in older adults, children, and those with asthma. A
decrease in physical activity is recommended.
Consolidate your travel, reduce or eliminate fireplace use, refrain
from outdoor burning, and avoid using gas-powered lawn equipment.
For details on this High Pollution Advisory, visit the ADEQ internet
site at www.azdeq.gov/forecast/phoenix or call 602-771-2300.
$$
CAZ048-056-065-552-554-290800-
San Bernardino and Riverside County Valleys-The Inland Empire-
Riverside County Mountains-San Gorgonio Pass near Banning-
Orange County Coastal Areas-Orange County Inland Areas-
Including the cities of Riverside, San Bernardino, Ontario,
Moreno Valley, Fontana, Rancho Cucamonga, Corona,
Idyllwild-Pine Cove, Huntington Beach, Costa Mesa, Newport Beach,
Laguna Beach, San Clemente, Santa Ana, Anaheim, Garden Grove,
Irvine, Orange, Fullerton, and Mission Viejo
1254 PM PST Thu Nov 27 2025
...AIR QUALITY ALERT: MANDATORY WOOD-BURNING BAN IN EFFECT...
* WHAT...The South Coast AQMD has issued a mandatory wood-burning
ban for residents in the South Coast Air Basin. The No-Burn rule
bans burning wood, pellets, and manufactured fire logs in any indoor
or outdoor wood-burning device.
* WHERE...The South Coast Air Basin, which includes Orange County
and non-desert portions of Los Angeles, Riverside, and San
Bernardino counties. No-Burn Day alerts do not apply to areas above
3,000 feet in elevation, the Coachella Valley, or the High Desert.
Homes that rely on wood as a sole source of heat, low-income
households and those without natural gas service also are exempt
from the requirement.
* WHEN...midnight to midnight on Friday.
* IMPACTS...Particles in smoke can get deep into the lungs and cause
health problems (including asthma attacks), increases in emergency
room visits, and hospitalizations. No-Burn Days are needed to
protect public health when fine particle pollution levels are
expected to be high anywhere in the South Coast Air Basin. No-Burn
Days are based on fine particle pollution levels that are forecasted
for an entire 24-hour period, which may not be reflected in
real-time air quality maps.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To protect your health, check current and forecasted air quality
levels at www.aqmd.gov or download the mobile app at
www.aqmd.gov/mobileapp. When air quality is poor in your area,
limited extended or intense outdoor activity and remain inside with
windows and doors closed. Run your air conditioner and/or an air
purifier and avoid using devices that bring in outside air like a
swamp cooler or whole house fan if you have other ways to stay cool.
Additional details for this air quality alert are available at
www.aqmd.gov/advisory. Information on the South Coast AQMD Check
Before You Burn program is available at www.aqmd.gov/cbyb.
For the latest air quality forecasts and information, visit the
website at aqmd.gov.
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Grand Junction CO
250 AM MST Fri Nov 28 2025
COZ001>014-017>023-UTZ022>025-027>029-291000-
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-
250 AM MST Fri Nov 28 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.
A frontal boundary drops into northwest Colorado this evening,
bringing measurable snowfall to the northern mountains, as well as
lesser amounts down into the central mountains. A Winter Weather
Advisory is in effect for the Elkhead and Park Mountains, with 4-10
inches of snow forecast there. Blowing snow and slick roads on the
highway 40 corridor will make for challenging travel this evening and
overnight.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday.
A cooler and more unsettled pattern sets up for Saturday onward,
with multiple passing waves bringing cooler temperatures and
mountain snow showers. This could impact holiday travel, as well as
morning commutes Sunday into Monday with winter driving conditions
on the mountain passes. Additional mountain snow looks possible for
Tuesday afternoon and beyond, with some uncertainty in the forecast
at this point.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not expected today or tonight, however
spotters are encouraged to report snowfall amounts to the
National Weather Service in Grand Junction.
$$
