Climate change in Illinois encompasses the effects of climate change, attributed to man-made increases in atmospheric carbon dioxide, in the U.S. state of Illinois.
The United States Environmental Protection Agency reports[1] that the climate of Illinois is changing. According to a 2016 report, Illinois is already experiencing the effects of climate change, including warming of approximately one degree Fahrenheit (about 0.6 degrees Celsius), more frequent flooding and later ice formation on the Great Lakes, and earlier melting. This same article notes that in the future, Illinois is likely to experience greater hazards from human-caused climate change, including heaving precipitation and higher flooding, large algae blooms on Lake Michigan, a longer growing season, but higher temperatures, which will offset the benefits of the longer season, higher levels of ground-level ozone, and more days with high temperatures above 95 °F (35 °C).
On January 23, 2019, Governor J.B. Pritzker committed Illinois to joining the United States Climate Alliance.[2] In 2021, the Illinois Legislature passed the Climate and Equitable Jobs Act,[3] which was signed into law by Pritzker on September 15, 2021.[4]
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