Outdoor workers in Wisconsin, including construction and landscaping crews, are at increased risk of respiratory and heat-related illnesses due to prolonged exposure to wildfire smoke and high temperatures. The American Heart Association has also linked smoke exposure to an elevated risk of cardiac events, including cardiac arrest. Workers performing strenuous labor during hazardous air quality alerts are particularly vulnerable, as they inhale more particulate matter than the general public. Symptoms such as shortness of breath, chest pressure, and fatigue may develop gradually, complicating timely reporting and treatment.