New Jersey Heat Advisory: Dangerous Humidity Pushes Heat Index Near 100° Today

the staff of the Ridgewood blog

Ridgewood NJ, A Heat Advisory remains in effect for large portions of Northern and Central New Jersey until 7:00 PM EDT this evening. With temperatures climbing and high humidity moving into the region, real-feel values are expected to reach up to 98°F, creating dangerous conditions for outdoor activity and vulnerable populations.

Whether you’re commuting, working outdoors, or planning afternoon activities, staying cool and hydrated is critical. Here is everything you need to know about today’s weather risk and how to protect yourself.

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Heat Advisory Details & Affected Counties

• What: Heat index values (temperature plus humidity) reaching up to 98°F.

• When: In effect until 7:00 PM EDT this evening.

• Where:

  • Bergen County (Eastern & Western)

  • Essex County (Eastern & Western)

  • Passaic County (Eastern)

  • Union County (Eastern & Western)

  • Hudson County

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What Triggers a Heat Advisory?

The National Weather Service issues a Heat Advisory when the heat index is projected to reach 95°F to 99°F for two or more consecutive days, or 100°F to 104°F for any length of time. High humidity prevents sweat from evaporating effectively, making it significantly harder for the body to cool itself down naturally.

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Key Safety Precautions: How to Stay Safe Today

1. Protect Vulnerable Individuals

Seniors, infants, and individuals with chronic illness or mental health conditions face the highest risk during extreme heat. Homes without air conditioning can quickly absorb heat and become warmer than the outdoors.

• Check in on elderly family members, friends, and neighbors.

• Seek out public cooling stations, libraries, or shopping centers if home air conditioning is unavailable.

2. Practice Outdoor Work Safety

For those working outside, the Occupational Safety and Health Administration (OSHA) advises:

• Scheduling frequent rest breaks in shaded or air-conditioned environments.

• Drinking plenty of water even before feeling thirsty.

3. Recognize Heat Illness Symptoms

Know the signs of heat exhaustion and heat stroke:

• Heat Exhaustion: Heavy sweating, weakness, cold/clammy skin, fast pulse, dizziness. Move to a cool area and sip water.

• Heat Stroke (Emergency): High body temperature, hot/red/dry skin, confusion, or loss of consciousness. Heat stroke is a medical emergency — call 911 immediately.

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• Tags: New Jersey Weather, Heat Advisory, Local News, Public Safety, Health & Wellness, Bergen County, Essex County, Hudson County, Passaic County, Union County