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Air Quality Action Day Friday – Particulate Matter & Ozone

The Indiana Department of Environmental Management (IDEM) has declared that Friday June 30th is an Air Quality Action Day in our region for both Particulate Matter (PM 2.5) and Ozone.

Current air monitor readings across the northern Indiana remain high for particulates and ozone as the Canadian wildfire plume continues to move slowly through the state. Particulates and ozone are expected to be Unhealthy for Sensitive Groups.


Unhealthy for Sensitive Groups

Ground-level ozone is formed when sunlight and hot weather combine with vehicle exhaust, factory emissions, and gasoline vapors. Ozone near the ground is a lung irritant that can cause coughing and breathing difficulties for sensitive populations.

Particulate Matter (PM 2.5)

Unhealthy for Sensitive People

Anyone sensitive to changes in air quality may be affected when particulate and ozone levels are high. Children, the elderly, and anyone with heart or lung conditions should reduce or avoid exertion and heavy work outdoors.

Do your part to help clean the air by taking action!

  1. Carpool or use public transportation
  2. Avoid using gas-powered equipment
  3. Turn off engines instead of idling
  4. Do not burn trash or other debris
  5. Use propane gas instead of charcoal when grilling


For more information about actions you can take, visit the Clean Air Michiana website. If you have questions, contact MACOG at 574-287-1829 or