'Not what we grew up with.' The science that makes Cincinnati swelter

Key Points:

• Cincinnati is experiencing more extreme heat days this summer than in past decades, driven largely by global warming and regional factors such as its location in the Ohio River Valley and extensive built environment.
• The city's geographic position traps warm, moist air and pollutants, leading to prolonged heat domes and poor air quality, with nighttime temperatures rising almost twice as fast as daytime highs.
• Urban development with impermeable surfaces like roads and parking lots intensifies local heat, causing temperature differences of up to 10 degrees between neighborhoods, often impacting vulnerable communities the most.
• To combat rising temperatures, Cincinnati has launched the Stay Cool Cincy program providing public cooling stations in heat-burdened neighborhoods, alongside longer-term efforts to increase green spaces and tree planting as outlined in the Green Cincinnati Plan.
• Experts emphasize the importance of community involvement and climate conversations to slow warming trends and protect future generations, highlighting that even small actions like planting native plants can contribute to mitigating heat impacts.