Michigan Air Quality Index (AQI) — Live City-by-City Readings
Air quality tracks Live AQI readings for Detroit, Grand Rapids, Lansing, Ann Arbor, Flint, and 10+ Michigan cities. EPA color-coded health categories and outdoor activity guidance. The reading is aggregated by Michigan Gateway from AirNow (EPA · Open-Meteo), an authoritative public source, and refreshed automatically throughout the day.
For Michigan residents this indicator is one of several environmental-hazard signals that inform day-to-day decisions — from whether it's safe to be outdoors to whether a specific community needs additional attention. Combined with the other environment indicators listed at the bottom of this page, it helps residents, journalists, and county officials build a fuller picture of current conditions in Michigan.
The current reading for this indicator updates live on the
Michigan Gateway dashboard.
The data feed below is fetched from AirNow (EPA · Open-Meteo) via the
public /api/aqi endpoint.
The Air Quality Index (AQI) is a 0–500 scale set by the EPA. 0–50 is Good (everyone is safe outdoors), 51–100 is Moderate (sensitive groups should consider limits), 101–150 is Unhealthy for Sensitive Groups (kids, seniors, asthma), 151+ is Unhealthy for everyone. Michigan AQI is usually Good or Moderate, but spikes during wildfire-smoke events and summer ozone days.
- AQI > 100: limit prolonged outdoor exertion if you have asthma, COPD, or heart disease.
- AQI > 150: keep windows closed, run AC, avoid outdoor exercise.
- AQI > 200: stay indoors, use an HVAC filter rated MERV 13+ or a HEPA purifier.
- Subscribe to EPA EnviroFlash for free email alerts: https://www.enviroflash.info/