New Yorkers are waking up Monday, June 29, 2026, to a muggy, low-visibility start, with patchy fog, sticky humidity, and temperatures in the upper 60s, especially murky near the waterways. The haze should lift by midmorning, trading in the gloom for mostly sunny skies and an afternoon high near 83F. But this comfortable stretch is short-lived: an Extreme Heat Watch is already posted from Wednesday, July 1, 2026, through Friday evening, July 3, 2026.
Foggy Morning, Sunny Afternoons
The thickest fog is hugging the eastern Long Island Sound, Peconic and Gardiners Bays, and nearby ocean waters early today, cutting visibility for both commuters and boaters before gradually improving by late morning. Light northeast winds will keep the city feeling humid but should limit how long the worst marine and coastal issues stick around. The National Weather Service has issued a Marine Dense Fog Advisory for parts of the local waters this morning, along with an Extreme Heat Watch for the middle of the week.
Dangerous Heat Midweek
After Tuesday, the thermostat cranks up fast, with inland highs climbing into the low-to-mid 90s and a peak near 96F expected Thursday. Overnight lows in the upper 70s to low 80s will offer little relief, keeping apartments and top floors especially stuffy. Heat index values could reach roughly 10510F from Wednesday through Friday, raising the risk of heat-related illness for outdoor workers, older adults, and anyone without air conditioning. Check city cooling resources and preparedness tips, look back at this steamy heat spike preview for context, and remember that residents can call 311 for local “Beat the Heat” options.
What To Expect This Week
Tuesday edges warmer with a high around 84F and a slight chance of late-day showers or thunderstorms. Wednesday is set to launch the hottest stretch with a high near 91F, followed by Thursday and Friday pushing into the mid-to-upper 90s. Independence Day, Saturday, July 4, 2026, is currently on track to be mostly sunny with a high near 91F and about a 40% chance of afternoon showers or thunderstorms, so plan barbecues, park time, and rooftop hangs with both heat and pop-up storms in mind.
Beat The Heat
Use air conditioning if you have it, or spend time in shaded, air-conditioned public spaces. Drink plenty of water throughout the day and avoid strenuous activity during the hottest hours. Employers and outdoor crews should build in frequent breaks in cool areas. Heat stroke is a medical emergency: call 911 if someone becomes confused, faints, or stops sweating.
