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Air quality alert issued due to wildfire smoke through Thursday, June 29, for southern, east central, and NE Minn.

Jun 27, 2023 09:59AM ● By Content Editor
Image: MN PCA 

From the Minnesota Pollution Control Agency - June 27, 2023

The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for southern, east central, and northeast Minn., effective Tuesday, June 27, until Thursday, June 29, at midnight. The affected area includes the Twin Cities metro, Albert Lea, Marshall, Worthington, Rochester, Hinckley, Winona, Mankato, Two Harbors, Hibbing, Ely, Duluth, and the tribal nations of Upper Sioux, Prairie Island, Mille Lacs, Grand Portage, and Fond du Lac.

Smoke from wildfires in Ontario and Quebec moved into eastern and southern Minn. late Monday, and ground-level smoke has persisted through early Tuesday morning. High pressure has moved into the state and will result in very light winds across eastern Minn. on Tuesday. As a result, ground-level smoke is expected to linger across the alert area on Tuesday. Winds will become southerly on Tuesday afternoon and air quality may improve across northeast Minn. by Wednesday. However, the smoke currently impacting Wisconsin is expected to recirculate into southern Minn., and ground-level smoke is expected to persist across southern and east central Minn. on Wednesday. A cold front will move across Minn. on Wednesday afternoon and bring cleaner air from the west. Air quality should improve statewide by midnight on Thursday.

Fine particle levels are expected to reach the orange air quality index (AQI) category, a level considered unhealthy for sensitive groups. In the orange area, sensitive groups should limit prolonged or heavy exertion and time spent outdoors.

What this alert means

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

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.

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

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.

Stay informed

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