Every year, the city of Chicago comes alive with one of its most beloved traditions—dyeing the Chicago River green for St. Patrick’s Day. It’s a spectacle that draws locals and tourists alike to the banks of the river, creating a vibrant and festive atmosphere. If you’re planning to check it out in 2025, here’s everything you need to know about when it starts, how long it lasts, and why the river is turned green.
The Chicago River will be dyed green on Saturday, March 15, 2025. The dyeing of the river is a tradition that typically happens in the morning, and it’s set to begin at 10:00 AM. If you want to catch this iconic event, it’s best to head to the river early to find a good viewing spot.
How Long Does the River Stay Green?
The vibrant green color isn’t permanent. The river remains green for several hours on the day of the event. Typically, the bright green color can be seen until about noon, though it may fade earlier depending on weather conditions. The dye used is specially designed to last for several days but is also environmentally friendly, so it won’t harm the water or the wildlife in the river.
Why Is the Chicago River Dyed Green?
The tradition of dyeing the Chicago River green started in 1962 as part of the city’s St. Patrick’s Day celebrations. The original idea came from a group of plumbers who used green dye to trace illegal pollution in the river. Over time, this idea turned into a city-wide tradition to mark the Irish holiday, and it has become one of the most popular St. Patrick’s Day events in the world.
The bright green color symbolizes both the city’s Irish heritage and the festive spirit of St. Patrick’s Day.
Where to Watch the Chicago River Dyeing?
The best places to watch the river turn green are along the Chicago Riverwalk, especially between Michigan Avenue and Columbus Drive. You can also catch a great view from nearby bridges, such as the Wabash Avenue Bridge or State Street Bridge, where many spectators gather. If you want to get even closer, you can book a river cruise or join a St. Patrick’s Day boat tour to see the green water from the water itself.
Additional St. Patrick’s Day Celebrations in Chicago
While the dyed river is the main attraction, Chicago also hosts a variety of events and activities to celebrate St. Patrick’s Day. Parades, Irish music, and food festivals fill the streets, creating an exciting, festive atmosphere throughout the city.
Whether you’re a local or visiting for the first time, the Chicago River dyeing is an unforgettable event that’s sure to bring some extra excitement to your St. Patrick’s Day celebrations.
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