WWA Summary for Air Quality Alert

Air Quality Alert

MNZ010>012-018>021-025-026-033>038-211400-
Koochiching-North St. Louis-Northern Cook and Lake-North Itasca-
Central St. Louis-Southern Lake-Southern Cook-North Cass-
South Itasca-South Cass-Crow Wing-Northern Aitkin-South Aitkin-
Carlton and South St. Louis-Pine-
Including the cities of International Falls, Ely, Isabella,
Bigfork, Hibbing, Two Harbors, Silver Bay, Grand Marais, Walker,
Grand Rapids, Pine River, Brainerd, Hill City, Aitkin, Duluth,
Pine City, and Hinckley
229 PM CDT Fri Jul 18 2025

...AIR QUALITY ALERT FROM 1 PM CDT SATURDAY UNTIL 9 AM CDT
MONDAY...

* WHAT...The Minnesota Pollution Control Agency has issued an Air
Quality Alert for fine particles pollution. The Air Quality Index
(AQI) is expected to reach the Purple or Very Unhealthy category.

* WHERE...North central, northeast, and northwest Minnesota.

* WHEN...1 PM CDT Saturday until 9 AM CDT Monday.

* IMPACTS...The risk of health effects is increased for everyone.

* ADDITIONAL DETAILS...Heavy surface smoke from Canadian
wildfires will drift south into Minnesota over the next several
days. This smoke will initially impact far northern Minnesota
early Saturday afternoon and then spread south and east through
the rest of the day and into the evening. Smoke lingers across
the region on Sunday with light winds in place, and then exits
back to the north through Monday morning. The highest smoke
concentrations are expected to be across far northern Minnesota
and the Arrowhead region from Saturday into Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Sensitive groups, such as people with lung disease (including
asthma), heart disease, and children and older adults, should
avoid all physical activities outdoors. The general public should
avoid prolonged or heavy exertion. Reduce or eliminate activities
that contribute to air pollution, such as outdoor burning, and
use of residential wood burning devices. Reduce vehicle trips and
vehicle idling as much as possible. Keep windows closed overnight
to prevent smoke from getting indoors.

&&

For information on current air quality conditions in your area
and to sign up for daily air quality forecasts and alert
notifications by email, text message, phone, or the EPA AirNow
mobile app, visit https://www.pca.state.mn.us/air-water-land-
climate/current-air- quality-conditions. You can find additional
information about health and air quality at
https://www.pca.state.mn.us/air-water-land- climate/air-quality-
and-health.

$$

MPCA

MNZ001-002-004>009-013>017-022>024-211400-
East Marshall-East Polk-Hubbard-Kittson-Lake of the Woods-Mahnomen-
Norman-North Beltrami-North Clearwater-Pennington-Red Lake-Roseau-
South Beltrami-South Clearwater-West Marshall-West Polk-
Including the Tribal Nations of Leech Lake, Red Lake, and White Earth
Including the cities of Bemidji, Crookston, East Grand Forks, and
Roseau
207 PM CDT Fri Jul 18 2025

...AIR QUALITY ALERT FROM 1 PM CDT SATURDAY UNTIL 9 AM CDT MONDAY...

* WHAT...The Minnesota Pollution Control Agency has issued an Air
Quality Alert for fine particles pollution. The Air Quality Index
(AQI) is expected to reach the Purple or Very Unhealthy category.

* WHERE...North central, northeast, and northwest Minnesota.

* WHEN...1 PM CDT Saturday until 9 AM CDT Monday.

* IMPACTS...The risk of health effects is increased for everyone.

* ADDITIONAL DETAILS...Heavy surface smoke from Canadian wildfires
will drift south into Minnesota over the next several days. This
smoke will initially impact far northern Minnesota early Saturday
afternoon and then spread south and east through the rest of the day
and into the evening. Smoke lingers across the region on Sunday with
light winds in place, and then exits back to the north through Monday
morning. The highest smoke concentrations are expected to be across
far northern Minnesota and the Arrowhead region from Saturday into
Sunday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...
Sensitive groups, such as people with lung disease (including
asthma), heart disease, and children and older adults, should avoid
all physical activities outdoors. The general public should avoid
prolonged or heavy exertion.

Reduce or eliminate activities that contribute to air pollution, such
as outdoor burning, and use of residential wood burning devices.
Reduce vehicle trips and vehicle idling as much as possible.
Keep windows closed overnight to prevent smoke from getting indoors.

&&

For information on current air quality conditions in your area and to
sign up for daily air quality forecasts and alert notifications by
email, text message, phone, or the EPA AirNow mobile app, visit
https://www.pca.state.mn.us/air-water-land-climate/current-air-
quality-conditions. You can find additional information about health
and air quality at https://www.pca.state.mn.us/air-water-land-
climate/air-quality-and-health.

$$

COC085-077-191500-
Montrose-Mesa-
910 AM MDT Fri Jul 18 2025

...AIR QUALITY HEALTH ADVISORY FOR WILDFIRE SMOKE FROM 900 AM
FRIDAY UNTIL 900 AM SATURDAY...

The Colorado Department of Public Health and Environment has
issued the following...

WHAT...Air Quality Health Advisory for Wildfire Smoke.

WHERE...Mesa and Montrose Counties. Locations include, but are not
limited to, Gateway and Paradox.

WHEN...900 AM Friday July 18 to 900 AM Saturday July 19

IMPACTS...Large wildfires are burning in southern Mesa and western
Montrose counties. Moderate to heavy smoke is possible on Friday
and early Saturday morning in areas near the fires.

HEALTH INFORMATION...Public Health Recommendations: If smoke is
thick or becomes thick in your neighborhood you may want to remain
indoors. This is especially true for those with heart disease,
respiratory illnesses, the very young, and older adults. Consider
limiting outdoor activity when moderate to heavy smoke is present.
Consider relocating temporarily if smoke is present indoors and is
making you ill. If visibility is less than 5 miles in smoke in
your neighborhood, smoke has reached levels that are unhealthy.

$$