Sonali Tiwary
Columbus is dealing with some of the most uncomfortable heat of the year, and the thermometer reading alone doesn’t tell the full story.
The National Weather Service has issued a Heat Advisory for Columbus extending through September 4. Temperatures are expected to reach the low-to-mid 90s Fahrenheit during the day. That’s already hot. But the real number to watch is the heat index, which forecasters say could reach approximately 102 to 104°F across parts of the Columbus area.
The heat index is the “feels like” temperature — what your body actually experiences based on the combination of air temperature and humidity. Humid air slows down how fast sweat evaporates off your skin. Since sweat evaporating is how your body cools itself, high humidity makes the same temperature feel significantly hotter and makes it harder for your body to regulate its temperature. With humidity factored in, the heat index can reach about 104°F, meaning conditions may feel much hotter than the actual air temperature.
That difference matters for how long it’s safe to be outside, how quickly heat illness can develop, and how much extra strain is put on the body during outdoor work, exercise, or a commute without air conditioning.
The heat advisory runs through 8:00 PM Friday, September 4. Showers and thunderstorms are expected to develop Friday afternoon and evening, bringing some localized relief. However, that relief won’t necessarily reach every part of the area — not every neighbourhood will see rainfall when storms move through.
Outdoor workers, children, older adults, and anyone without access to air conditioning should take the heat index seriously this week. Heat illness can come on quickly in these conditions, especially during physical activity. Checking on neighbours and family members who may not have cooling at home is a practical step during a period like this.
