Chicago's air quality improves, but wildfire smoke remains a concern
Chicago's air quality has seen significant improvement after experiencing unhealthy levels due to smoke from nearly 900 wildfires burning across Canada. Experts caution that air quality fluctuations in the area will depend on wind direction and wildfire activity in Canada and the U.S. West Coast. The Air Quality Index (AQI) in Chicago ranged from 'very unhealthy' to 'hazardous' last week, but as of Tuesday morning, it was around 50, indicating acceptable air quality levels. Researchers warn that climate change is intensifying wildfire seasons, leading to prolonged smoke exposure risks across North America. (Source: Chicago Sun-Times) 
