Here’s what’s canceled — and what’s not — because of Chicago’s air quality

Smoke from Canadian forest fires obscures the Chicago skyline seen from Fullerton Beach. On Tuesday, Chicago had the worst air quality among big cities across the world. (Tyler Pasciak LaRiviere/Sun-Time)

Chicago had some of the worst air quality in the world Tuesday as a white haze caused by wildfire smoke from Canada blanketed the city.

Experts and city officials urged Chicagoans to take caution when spending time outside — causing some events in and around the city to be canceled or moved indoors, while others are going ahead as planned.