Overview

• A persistent heat dome is trapping high pressure over the region, driving temperatures above 95°F and pushing heat indices as high as 108°F in urban centers.
• Extreme heat warnings remain in effect through Wednesday in New York City, Chicago and Philadelphia, while heat advisories extend in Cleveland and Northeast Ohio through Tuesday.
• Cities have opened cooling centers in libraries, community hubs and senior facilities to provide air-conditioned refuge for residents without home air conditioning.
• Health officials warn that elderly residents, outdoor workers and people without AC face heightened risks of heat exhaustion and heat stroke, prompting hotlines and welfare checks.
• Forecasts predict scattered thunderstorms late Monday into Tuesday that may bring temporary relief before temperatures rebound to near-90°F levels later in the week.