NYC Faces Heatwave with Temperatures in the 90s and Air Quality Alert
New York City and the surrounding tri-state area are experiencing an early surge of summer heat, with temperatures climbing into the 90s this week. The New York State Department of Health and Department of Environmental Conservation have issued an air quality health advisory for ground-level ozone, effective from 11 a.m. to 11 p.m. on Monday, May 18, 2026. Inland areas may see highs nearing 100°F (38°C) on Tuesday, while coastal regions will remain cooler, with highs in the 70s. Hazy skies are expected, and nighttime lows inland will stay in the 70s. The heatwave is accompanied by elevated ozone levels, which can pose health risks, particularly for individuals with respiratory or cardiovascular conditions, the elderly, and those engaging in outdoor activities. By midweek, temperatures will remain in the low 90s, with thunderstorms unlikely to alleviate the humidity. Cooler weather is forecasted later in the week, with highs in the 60s and 70s expected through Memorial Day weekend.