When air quality is ranked "unhealthy for vulnerable groups" it means PM 2.5 are at levels that can cause problems for people with medical conditions, especially respiratory issues like asthma and heart or lung disease. Certain age groups — older adults, children and teens — are also vulnerable to problems from bad air, according to the EPA.

I lost my home in the Pacific Palisades fire. Although wildfires have become a part of modern life, you can take steps to protect yourself from the smoke.

Windsor-Essex, Chatham-Kent and Sarnia-Lambton can all expect elevated air pollution levels again Tuesday. Environment and Climate Change Canada has once again issued a special weather statement for the region. This time, the weather office says weather conditions are expected to cause increasing levels of ozone.

Officials warn southeast Michigan residents to be careful outdoors Tuesday because of expected high ozone pollution levels.