Midwest Air Continues to Worsen

Chicago Tribune:

Thick smoke from Canadian wildfires coated Chicago and the surrounding areas with haze as weather officials issued an air quality alert for parts of the Great Lakes, Lower Mississippi and Ohio valleys Tuesday morning.

According to the monitoring site IQAir, Chicago had the worst air quality out of 95 cities worldwide Tuesday.

UPDATE:

The Iberian Peninsula is experiencing one of the most notable wildfire smoke events in its modern history with Aerosol Index (AI) values exceeding 4 in some locations (AOD values >1). The distance between Quebec, Canada and Spain is around 3,000 miles. pic.twitter.com/n2jIZ9Cv2f

— Nahel Belgherze (@WxNB_) June 27, 2023