Air quality alert issued across Michigan for Sunday and Monday
An air quality alert has been issued for the entire state of Michigan due to thick wildfire smoke drifting in from Canada, creating unhealthy conditions for residents across both the Upper and Lower Peninsulas. The alert, announced by the Michigan Department of Environment, Great Lakes, and Energy, goes into effect Sunday, July 13, and will remain in place through noon on Monday, July 14.
Smoke from ongoing wildfires burning in Canada is expected to move into Michigan starting Saturday afternoon, first impacting areas in the western Upper Peninsula before spreading east and south through the rest of the state on Sunday. The result: elevated concentrations of fine particulate matter that can cause respiratory issues and aggravate pre-existing health conditions.
Northern Michigan faces ‘very unhealthy’ air, Southeast Michigan under advisory
Air quality levels are expected to hit the Very Unhealthy category — marked as Purple on the Air Quality Index (AQI) — in northern portions of the state, while residents in the south, including the Detroit metro area, could experience conditions ranging from Unhealthy (Red AQI) to Unhealthy for Sensitive Groups (Orange AQI).
Alongside the statewide alert, a separate air quality advisory has also been issued specifically for Southeast Michigan, where the smoke’s effects are likely to linger longer and pose a more serious risk to sensitive populations.
What the Air Quality Index means for your health
The Air Quality Index is a government-issued scale that measures air pollution levels, using colors to represent different health risks. The higher the number, the worse the air quality. Purple levels (AQI 201–300) indicate very unhealthy air for everyone, not just vulnerable groups, while Red levels (151–200) signal unhealthy conditions that may affect the general population.
Advisory vs alert: understanding the difference
While an air quality advisory is issued when air pollution is expected to exceed the Orange AQI threshold — which is unhealthy for sensitive groups like children, seniors, and people with respiratory illnesses — an air quality alert is more serious. It’s triggered when multiple air quality monitors across a region are forecast to hit the Red, Purple, or even Maroon ranges, where health effects can be experienced by anyone spending time outdoors.
With wildfire smoke continuing to push southward from Canada, Michigan residents should prepare for poor visibility, a smoky haze, and air quality conditions that may fluctuate quickly throughout Sunday and Monday.
