US: Chicago issues red air quality alert as pollution reaches hazardous levels.

SHOTLIST: CHICAGO, ILLINOIS, US (JULY 16, 2026) 1. VARIOUS OF CHICAGO SKYLINE SHROUDED IN SMOKE DUE TO AIR POLLUTION / PEOPLE WEARING FACE MASK CHICAGO, ILLINOIS, US - JULY 16: Chicago issued a red air quality alert on Thursday, July 16, after pollution reached hazardous levels, prompting health warnings for all residents. The Illinois Environmental Protection Agency said the Air Quality Index (AQI) climbed to 329, with fine particulate matter (PM2.5) identified as the primary pollutant. A thick layer of smoke was visible over Lake Michigan as authorities warned that the current air quality poses health risks to everyone, regardless of age or health condition. Officials urged residents to limit prolonged outdoor activities until air quality improves.