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Air Quality Alert





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Air quality alert due to wildfire smoke expanded to include northern, central, south central, and southwest Minnesota through Friday, July 25

Air quality is expected to reach the red AQI category in northern and central Minnesota, which is unhealthy for everyone

The Minnesota Pollution Control Agency (MPCA) has expanded the current air quality alert to include northern, central, south central, and southwest Minnesota. The alert runs until 11 p.m. on Friday, July 25. The affected area includes the Twin Cities metro area, Brainerd, Alexandria, Albert Lea, Marshall, Worthington, Hinckley, St. Cloud, Ortonville, Mankato, Bemidji, East Grand Forks, Moorhead, International Falls, Two Harbors, Hibbing, Ely, Duluth, Roseau, and the Tribal Nations of Upper Sioux, Mille Lacs, Prairie Island, Leech Lake, White Earth, Red Lake, Grand Portage, and Fond du Lac.

A band of heavy smoke from wildfires in Saskatchewan and Manitoba is moving south across northwest Minnesota on Wednesday. The smoke will remain over the northwest part of the state through the end of Wednesday, but by Thursday morning the smoke will reach southwest Minnesota. Smoke will also move into the northeast and central portions of the state Thursday morning, and by Thursday afternoon smoke will reach east central and south central Minnesota. Some uncertainty remains regarding how far south the ground-level smoke will reach by Friday morning, when winds are expected to become southerly and push the smoke back to the north. Air quality should improve gradually from south to north beginning Friday afternoon, with improvement in fine particle levels below the alert threshold expected by the end of Friday.

Fine particle levels are expected to reach the red air quality index (AQI) category, a level considered unhealthy for everyone, across northern and central Minnesota. This area includes Brainerd, Alexandria, Hinckley, Ortonville, Bemidji, East Grand Forks, Moorhead, International Falls, Two Harbors, Hibbing, Ely, Duluth, Roseau, and the Tribal Nations of Mille Lacs, Leech Lake, White Earth, Red Lake, Grand Portage, and Fond du Lac. In the red area, sensitive groups should avoid prolonged or heavy exertion and limit time spent outdoors. Everyone should limit prolonged or heavy exertion and time spent outdoors.

Fine particle levels are expected to reach the orange AQI category, a level considered unhealthy for sensitive groups, across central, south central, and southwest Minnesota. This area includes the Twin Cities metro area, Albert Lea, Marshall, Worthington, St. Cloud, Mankato, and the Tribal Nations of Upper Sioux and Prairie Island. In the orange area, sensitive groups should limit prolonged or heavy exertion and time spent outdoors.

*MDH sends these air quality alert messages only once a day, unless the air quality worsens.*

*Air quality can change quickly, so be sure to check current air quality conditions.
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Air quality alert map for July 24, 2025





What this alert means

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Air moves long distances and carries pollutants. During air quality alerts due to wildfires, the air is mixed with harmful smoke. Wildfire smoke spreads or lingers depending on the size of the fires, the wind, and the weather.

The air quality index (AQI) is color-coded. Air quality alerts are issued when the AQI is forecast to reach an unhealthy level, which includes forecasts in the orange, red, purple, and maroon categories. For a full description of each air quality category, visit airnow.gov [ [link removed] ].



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Red air quality: Unhealthy

*Sights and smells:* In areas where air quality is in the red AQI category due to wildfires, the sky may look smoky. The air will look hazy and you won’t be able to see long distances. You may smell smoke.

*Health effects: *This air is unhealthy for everyone. Anyone may begin to experience symptoms such as irritated eyes, nose, and throat, coughing, chest tightness, or shortness of breath. Sensitive or more exposed individuals may experience more serious health effects, including worsening of existing heart or lung disease and respiratory and cardiovascular conditions, possibly leading to an asthma attack, heart attack, or stroke.

*What to do: *Reduce outdoor physical activities, take more breaks, and avoid intense activities to reduce  exposure. Sensitive and more exposed individuals should avoid prolonged or vigorous activities and consider shortening, rescheduling, or moving outdoor events inside.

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Orange air quality: Unhealthy for sensitive groups

*Sights and smells:* In areas where air quality is in the orange AQI category due to wildfires, the sky may look hazy and residents may smell smoke even when wildfires are far away. In areas where air quality is in the orange AQI category due to stagnant air, the air may look hazy.

*Health effects: *This air is unhealthy for sensitive groups and pollution may aggravate heart and lung disease as well as cardiovascular and respiratory conditions. Symptoms may include chest pain, shortness of breath, wheezing, coughing, and fatigue.

*What to do:* People in sensitive groups are encouraged to reduce outdoor physical activities, take more breaks, or do less intense activities to reduce their exposure. People with asthma should follow their asthma action plan and keep their rescue inhaler nearby.






Who’s most at risk

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Poor air quality impacts health. Fine particle pollution from wildfire smoke can irritate eyes, nose, and throat, and cause coughing, chest tightness, shortness of breath, dizziness, or fatigue.

Smoke particles are small enough that they can be breathed deeply into lungs and enter the bloodstream. This can lead to illnesses such as bronchitis or aggravate existing chronic heart and lung diseases, triggering heart palpitations, asthma attacks, heart attacks, and strokes.

Certain groups experience health effects from unhealthy air quality sooner than others, either because they are more sensitive to fine particle pollution or because they are exposed to larger amounts of it.

*Sensitive groups* include:


* People who have asthma or other breathing conditions like chronic obstructive pulmonary disease (COPD)
* People who have heart disease, high blood pressure, or diabetes
* Pregnant people
* Children and older adults

*People with increased exposure *include:


* People of all ages who do longer or more vigorous physical activity outdoors
* People who work outdoors, especially workers who do heavy manual labor
* People who exercise or play sports outdoors, including children
* People who don’t have air conditioning and need to keep windows open to stay cool
* People in housing not tight enough to keep unhealthy air out, or who do not have permanent shelter.

Anyone experiencing health effects related to poor air quality should contact their health care provider. Those with severe symptoms, chest pain, trouble breathing, or who fear they may be experiencing a heart attack or stroke should *call 911 immediately*.

Take precautions

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 to ensure outside smoke does not enter your home.

Additional resources

* *Minnesota Outdoor Air Quality Guidance for Schools and Child Care [ [link removed] ]* - This MDH guidance can help *school and child care staff* determine when and how to adjust outdoor physical activities when air quality starts to reach unhealthy levels. Air pollution affects everyone, but children and youth are particularly vulnerable.
* *Extreme heat* and air quality alerts can happen at the same time. Learn how to stay safe and prevent heat-related illnesses at *mn.gov/heat* [ [link removed] ].






Stay informed

*Get Air Quality Alerts* [ [link removed] ]


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* Visit MPCA’s Air Quality Index webpage [ [link removed] ] for information on current air quality conditions in your area.
* Sign up for air quality alerts at EPA's AirNow Enviroflash [ [link removed] ].
* Download the EPA AirNow mobile app from the Apple App Store [ [link removed] ] or the Google Play Store [ [link removed] ].
* Visit the MPCA's Air quality and health webpage [ [link removed] ] for information about health and indoor and outdoor air quality and how to prevent air pollution [ [link removed] ].
* Visit the Minnesota Department of Health wildfire smoke webpage [ [link removed] ] for actions you can take to protect your health against wildfire smoke.






Minnesota Department of Health

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