Event Summary

On 7/1/2026, New York City experienced a historic and prolonged heat wave that continued through the July 4 holiday weekend. Temperatures reached the upper 90s and triple digits, with heat indices reaching as high as 112°F. The extreme heat placed significant strain on the electrical grid, resulting in power outages across parts of the city and prompting calls for energy conservation. The City expanded cooling centers and outdoor cooling options, including pop-up misting stations and COOL vans, while increasing outreach to vulnerable populations and outdoor workers.