A worked example
At 75°F with 50% relative humidity, the dew point is about 55°F — a comfortable level of atmospheric moisture.
Frequently asked questions
Why is dew point a better comfort indicator than relative humidity?
Relative humidity tells you what fraction of the air's maximum moisture capacity is being used at the current temperature — that fraction changes as temperature changes. Dew point is an absolute measure that stays the same even if temperature fluctuates, making it a more consistent indicator of how much moisture is actually in the air.
What dew point is considered uncomfortable?
Below about 55°F feels dry and pleasant. Around 60-65°F starts to feel noticeably humid to most people. Above 70°F feels oppressive and can be physically draining, especially with heat.