Most people have never been taught to read dew point. This site exists to change that — and to give everyone access to the forecast that actually tells you how the air will feel.
Not intentionally. But when you check the temperature to decide whether to go for a run, work in the garden, or send your kids outside to play, you're getting an incomplete picture. Temperature tells you how hot the air is. It says nothing about how the air will feel on your skin.
"A 90°F day with a dew point of 45°F feels like a perfect summer afternoon. A 90°F day with a dew point of 72°F feels like you're breathing through a wet towel."
The missing variable is moisture. Specifically, how much water vapor the air is holding. That's what determines whether your sweat evaporates — and sweat evaporation is your body's primary mechanism for cooling itself. When it works, you feel fine. When it doesn't, you feel miserable, regardless of what the thermometer says.
Most weather apps show relative humidity. But relative humidity is, by definition, relative — it changes throughout the day as temperature rises and falls, even when the actual amount of moisture in the air stays exactly the same.
A 50% humidity reading at 6am and a 50% reading at 3pm can feel completely different — because the air temperature changed, not the moisture content.
High in the morning, lower in the afternoon — not because the air dried out, but because warm air can hold more water vapor.
A dew point of 65°F feels the same whether the air temperature is 70°F or 95°F. It's an absolute measure of the moisture in the air.
Meteorologists use dew point because it doesn't lie. What you see is exactly what you'll feel.
Once you start reading dew point, you'll find that relative humidity becomes nearly useless for judging outdoor comfort. A summer morning at 85% humidity sounds oppressive — but if the dew point is 52°F, it's actually a beautiful morning.
The comfort classifications used on this site are consistent with the framework used by broadcast meteorologists across the country — plain language that reflects how dew point actually feels. No single person or organization owns this scale; it has evolved organically through the meteorology community over decades, grounded in physiological research on heat stress and dew point thresholds. The underlying science is straightforward: as dew point rises, sweat evaporation becomes measurably impaired, which is your body's primary cooling mechanism.
Forecast data is sourced from Open-Meteo, a free and open-source weather API that aggregates forecast models from national weather services including NOAA, ECMWF, GFS, and others. Data is updated hourly. Dew point, temperature, and humidity are provided at hourly resolution for 7 days.
Sunrise and sunset times are calculated for each specific location, so the day/night shading on the hourly chart reflects the actual astronomical conditions for that place — not a generic approximation.
Location search is powered by the Open-Meteo Geocoding API, which supports cities, towns, and postal codes worldwide.
🌐 Open-Meteo — Free Open-Source Weather APIThis site grew out of a simple frustration: every weather app buries dew point three screens deep, and none of them explain what it means. Anyone who has spent a summer in the Midwest or Southeast knows that temperature alone doesn't tell the story. Dew point does.