Dew Point Calculator

Calculate the dew point temperature instantly from air temperature and relative humidity. Understand comfort levels and condensation risk. Pure client-side.

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Quick Examples

Comfort Reference Table

Dew Point Comfort Level
Dry (< 10°C) Dry — Comfortable
Comfortable (10-13°C) Comfortable
Slightly Humid (13-16°C) Slightly Humid — Somewhat comfortable
Humid (16-18°C) Humid — Uncomfortable
Very Humid (18-21°C) Very Humid — Oppressive
Extreme (> 21°C) Extreme — Dangerous condensation risk

About Dew Point

The dew point is the temperature to which air must be cooled to become saturated with water vapor. When the air temperature drops to the dew point, condensation occurs. It's a key indicator of comfort and moisture levels in the atmosphere.

Features

Frequently Asked Questions

What is dew point?

Dew point is the temperature at which air becomes saturated with water vapor and condensation begins to form. It indicates how much moisture is in the air.

Why is dew point important?

Dew point helps predict condensation, mold growth, and human comfort. Lower dew points feel drier; higher dew points feel more humid and uncomfortable.

What is a comfortable dew point?

Dew points below 13°C (55°F) generally feel comfortable. Between 13-16°C (55-60°F) feels slightly humid. Above 18°C (65°F) starts to feel oppressive.

How is dew point calculated?

Dew point is calculated using the Magnus formula, which relates temperature and relative humidity to the saturation vapor pressure of water.