Chicago Swelters in Record-Breaking HeatChicago Swelters in Record-Breaking Heat Chicagoans endured record-breaking high temperatures this week, prompting a heat advisory from the National Weather Service. The city experienced its hottest day on record on Tuesday, reaching a staggering 99 degrees Fahrenheit at O’Hare International Airport. The extreme heat stressed city residents, particularly the elderly, young children, and those with chronic health conditions. The city opened cooling centers around the city, providing air conditioning and water to those in need. The heat advisory, which was in effect from noon to 9 p.m., urged residents to stay hydrated, avoid strenuous outdoor activities, and seek shelter in air-conditioned places. The NWS also issued an air quality alert, warning of elevated particulate matter levels. Chicago’s heat wave is part of a larger pattern of extreme weather events across the United States and around the world. Scientists have attributed the increasing frequency and intensity of these events to climate change. As the heat persisted, city officials and emergency responders were on high alert. Firefighters battled a dozen house fires in the span of just a few hours, all believed to be heat-related. Paramedics also responded to numerous calls for heat-related illnesses. Mayor Lori Lightfoot urged residents to take precautions and look out for neighbors who may be vulnerable to the heat. “We must all do our part to stay safe and help each other through these extreme conditions,” she said. As of Wednesday evening, the heat wave was expected to continue for several more days. The NWS urged residents to remain vigilant and to follow the heat advisory guidelines.