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Wildfire smoke

A blazing orange sunrise struggling to be seen through thick layers of wildfire smoke
Environment, Great Lakes, and Energy

Wildfire smoke

In recent years, Michigan has seen unprecedented levels of wildfire smoke drifting across its communities and much of the rest of the country.

In addition to pollutants like fine particulate matter carried in the smoke, there are gasses containing the chemicals that – when combined with sunlight – form ground-level ozone. These chemical reactions contribute to elevated ozone levels seen in areas across Michigan. It is important to take steps to protect yourself from wildfire smoke.

And most importantly: we issue advisories and alerts

An alert is issued when levels of ozone or PM2.5 are expected to be “unhealthy for sensitive groups (USG)”, “unhealthy”, “very unhealthy” or “hazardous”

Unhealthy air quality for sensitive groups - orange Unhealthy air quality - red Very unhealthy air quality - purple Hazardous air quality - maroon

 

What Michigan is doing about Canadian wildfire pollution

There is nothing the state can do to reduce the pollutants from the fires drifting over from Canada.

However, state agencies, including EGLE, Health and Human Services, Natural Resources and Agriculture and Rural Development are working together to give Michiganders the latest information on how to be informed and protect yourself and your loved ones when air quality may be harmful.

Contact us

For questions about how wildfire smoke can impact your health, contact the Michigan Department of Health and Human Services Environmental Health Hotline at 800-648-6942.

For scientific questions about wildfire smoke and air quality, contact our Environmental Assistance Center at EGLE-Assist@Michigan.gov or 800-662-9278.

    • AirNow.gov - real-time air data showing regional and national ozone and fine particle mapping along with forecasts, AQI information, and health messages
    • Air Quality Index (AQI) basics - tool for communicating about outdoor air quality and health considerations
    • Air data - user-friendly visualization tools for air quality analysts;  generate maps, graphs, and data tables dynamically
    • National air quality trends - track air pollution by air quality and emissions
    • Six common air pollutants - (criteria pollutant) information; describes each National Ambient Air Quality Standard (NAAQS) pollutant including sources and health concerns
    • When smoke is in the air - guide to informing and protecting yourself during wildfire smoke events
    • Air Quality Alert Program Report - information about days when advisories or alerts were called. It also contains the number of days the forecast indicated the likelihood of elevated levels of ozone, PM2.5 or both in the outdoor air. Data from 2023 to present is included.