ST. PAUL, Minn. — The Minnesota Pollution Control Agency issued an air-quality alert for much of central and southern Minnesota from noon Tuesday through 8 p.m. Southerly winds were expected to bring wildfire smoke into the state from as far as 2,700 moles away in northern Alberta and Manitoba. With sunny skies, warm temperatures and low humidity, the pollutants were expected to produce ground-level ozone that will be highest during the afternoon and early evening. People especially sensitive to smoke particles were advised to reduce outdoor physical activities, take more breaks, and limit themselves to intense activities.

Earlier: Wildfires rage in Alberta, Manitoba aspen forests

Earlier: Canada wildfire smoke pollutes Minnesota air

attachment AQ alert map 05222023 - Winona Journal

Orange is unhealthy. For sensitive groups. Image: Minnesota Pollution Control Agency