Air Quality Alert issued May 30 at 10:28AM EDT by NWS Marquette MI

The Michigan Department of Environment, Great Lakes, and Energy
(EGLE) has issued an Air Quality Advisory for elevated levels of fine
particulates (PM2.5) across the state of Michigan. Pollutants are
expected to be in the Unhealthy for Sensitive Groups (USG, Orange
AQI) range Friday into Saturday morning.

The Air Quality Advisory issued yesterday for the western Upper
Peninsula has been expanded to cover all of Michigan.

A cold front moving down from Ontario will bring wildfire smoke
plumes from fires in the provinces of Manitoba and Saskatchewan into
the state. The smoke plumes and associated increased PM2.5 will sink
from north to south through the state from Friday morning to
Saturday morning. Increased vertical mixing associated with the
boundary will likely bring smoke to the surface. As a result, we
anticipate PM2.5 levels rising into the Unhealthy for Sensitive
Groups (USG) range across the state. There is a possibility that
hourly levels could reach the Unhealthy (Red AQI) range for a short
period of time. While not all locations will reach USG for PM2.5,
there is enough of a threat to warrant an Advisory.

It is recommended that, when possible, you avoid strenuous outdoor
activities, especially those with heart disease and respiratory
diseases such as asthma.

Monitor for symptoms such as wheezing, coughing, chest tightness,
dizziness, or burning in nose, throat, and eyes. Reduce or eliminate
activities that contribute to air pollution, such as outdoor
burning, and use of residential wood burning devices.

Keep windows closed overnight to prevent smoke from getting indoors
and, if possible, run central air conditioning with MERV-13 or
higher rated filters.

For up-to-date air quality data for Michigan visit the MiAir site:
https://air-egle.hub.arcgis.com/

For further information, please see EPA’s Air Now site for up-to-
date air quality data at https://www.airnow.gov

For further health information, please see MDHHS’ Wildfire Smoke and
Your Health site at https://www.michigan.gov/mdhhs/safety-injury-
prev/environmental-health/your-health-and-wildfire-smoke.

Air Quality Advisory
Michigan Department of Environment, Great Lakes, and Energy
May 30, 2025