Weather
Hudson Valley: High Heat, Bad Air Create Dangerous Conditions
There's a risk for severe thunderstorms in the mid-Hudson as well.
HUDSON VALLEY, NY — Excessive heat warnings have been issued for the region Thursday as maximum heat index values will reach 105 to 110 during "dangerously hot conditions," the National Weather Service said.
Temperatures and heat index values will be highest across the Lower Hudson Valley, Northeast New Jersey, NYC, and southwestern portions of Connecticut.
For Dutchess and Ulster counties, there's also a marginal to slight risk for severe thunderstorms in the forecast today into this evening. Main hazard will be from damaging wind gusts, along with dangerous cloud to ground lightning strikes and heavy rainfall.
Find out what's happening in Ossining-Croton-On-Hudsonfor free with the latest updates from Patch.
An excessive heat watch has already been issued for Friday afternoon and evening across the region.
The highest heat index values will occur in the late afternoon to early evening hours each day. Extreme heat and humidity will significantly increase the potential for heat-related illnesses, particularly for those working or participating in outdoor activities.
Find out what's happening in Ossining-Croton-On-Hudsonfor free with the latest updates from Patch.

Sunset will bring little relief, as temperatures at night are staying into the 70s, and mostly 75 to 80 for NYC.
There is an increased risk of heat-related illness with prolonged activity. The NWS says:
Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible, and drink plenty of water.
Seniors and those with chronic health problems or mental health conditions are at increased risk. Homes without air conditioning can be much hotter than outdoors.
Use air conditioning to stay cool at home or go to a place that has air conditioning. Check on vulnerable friends, family members and neighbors.
To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke call 9 1 1.
The Northeast, like the Pacific Northwest, can expect daily record highs to be broken both Thursday and Friday while even more locations have a better chance to observe daily record warm minimum temperatures, the National Weather Service said.
As the heatwave continues, air quality has deteriorated in the lower Hudson Valley.
When pollution levels are elevated, the New York State Department of Health recommends that individuals consider limiting strenuous outdoor physical activity to reduce the risk of adverse health effects. People who may be especially sensitive to the effects of elevated levels of pollutants include the very young, and those with preexisting respiratory problems such as asthma or heart disease. Those with symptoms should consider consulting their personal physician.
Slightly cooler conditions arrive Saturday.
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