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Air Quality Action Days

A closeup of a gas-powered lawnmower on a hot summer day
Environment, Great Lakes, and Energy

Air Quality Action Days

Our meteorologists call Air Quality Action Days to protect you. These days are important for everyone, but especially for people with breathing problems like asthma as well as the elderly or young children.

On Air Quality Action Days, ozone levels may be harmful for your health. You may be thinking about the ozone layer - the natural invisible shield that helps protect us from the sun's harmful ultraviolet (UV) rays - we're not talking about that ozone. We're talking about harmful ground-level ozone.

Graphic showing ozone formation process
  • Limit or avoid strenuous activity, such as:

    • Yardwork
    • Playing sports
  • Avoid gasoline-related activities, such as:

    • Mowing your lawn
    • Filling up your tank
    • Idling your car
  • Avoid grilling and other outdoor burning, including:

    • Bonfires
    • Cooking on charcoal or propane grills
  • Avoid activities that worsen indoor air quality, such as:

    • Burning candles
    • Smoking
    • Using gas, propane, or wood-burning stoves

Stay informed

These resources provide current air quality conditions and AQI ratings for cities and communities throughout the state.

  • Sign up for air quality alerts

  • Understand the Air Quality Index (AQI)

  • MiAir, Michigan's real-time air quality map

  • A street-level view of the Michigan State Capitol building in Lansing with smoky air and a warm orange hue from wildfire smoke

    Part of our learn about air quality series

    Air quality affects the environment and your overall health in countless ways.

    Find information about quality issues in Michigan, including air quality related actions open for input from the public.

    Learn more about air quality

The relationship between Air Quality Action Days, Ozone Action Days, and Clean Air Action Days

You may be more familiar with Ozone Action Days, which is an older term for Air Quality Action Days. This name was updated to include other fine particulate matter pollution (such as wildfire smoke) as well as ozone. For a period, Air Quality Action Days were also called Clean Air Action Days, though that term has also been retired.