What Feels-Like Temperature Actually Tells You
The large number on the bulletin is the air temperature. The feels-like number beside it is an estimate of how that air will land on a person standing outside, once humidity and wind are taken into account. It is still a model of a typical situation. It is not a measurement from your skin, your car, or a shaded porch.
Air temperature answers a simple question: how warm is the air a couple of meters above the ground? Feels-like temperature answers a messier one: how hard will your body have to work to stay comfortable in that air? Those questions diverge when the air is humid, when the wind is up, or when the sun is strong. On a dry, calm, cloudy day they often sit close together, and the second number adds little.
Heat and humidity
Warm air can hold more moisture. When humidity is high, sweat evaporates more slowly, so the body loses less heat. The air temperature might be 88 degrees while the feels-like value climbs into the 90s. That gap is the useful part. It tells you the afternoon will be harder than the raw temperature suggests, especially for work outside, sports, or a long walk with no shade.
The gap is not a medical diagnosis. People differ by age, health, clothing, and how used they are to the climate. A feels-like value is a shared reference so neighbors are talking about the same adjustment. If you are sensitive to heat, treat a wide gap as a reason to slow down, drink water, and take breaks, not as a precise personal score.
Cold and wind
In cooler weather the adjustment often runs the other way. Wind strips heat from exposed skin, so the feels-like value sits below the air temperature. A 45-degree morning with a 20-mile-per-hour wind is a different jacket decision than a 45-degree morning with still air. The bulletin already lists wind speed next to the temperature. Read them together. If feels-like is several degrees lower and the wind is strong, the wind is doing the work.
Wind chill estimates assume exposed skin and a walking pace used by the formula. A person in a car, or someone wearing a wind shell, will not match the number exactly. Use it to choose layers, then adjust for your actual clothing.
What not to do with the number
Do not average the two temperatures and call that the real one. They measure different ideas. Quote the air temperature when you are comparing days or talking about the forecast high. Quote feels-like when you are deciding what to wear or whether midday exertion is wise.
Do not expect feels-like to match a car dashboard or a phone left in the sun. Those sensors heat up. The forecast value is for open air in the selected area. Shade, pavement, and brick walls create their own microclimates that a regional forecast cannot resolve street by street.
A quick read of the bulletin
Look at the big temperature first. Then look at feels-like. If they are within a couple of degrees, humidity and wind are not changing the story. If feels-like is much higher, humidity is the reason to respect the heat. If it is much lower, wind is the reason to add a layer. The humidity and wind lines on the same panel tell you which explanation fits.
Tomorrow's high and low are air temperatures, not feels-like values. A mild high can still feel sticky if humidity stays up, and a modest low can feel colder in a breeze. When that distinction matters for your plans, check the current feels-like again later in the day rather than assuming the morning gap will hold all evening.