St. Patrick's Day festivities have commenced in Chicago, bringing together locals and tourists to enjoy the city's vibrant celebrations. The event is marked by parades, cultural displays, and various public gatherings. Despite the festive atmosphere, the weather remains cool, with temperatures around 35°F (2°C). Participants are advised to dress warmly to fully enjoy the outdoor activities. The celebrations are a significant cultural event in Chicago, drawing large crowds and contributing to the city's lively atmosphere during this time of year.