Humidity in the air in America varies greatly depending on the region and season. Here's a breakdown:

- Coastal areas: High humidity, especially in the Southeast and Gulf Coast, with average relative humidity (RH) ranging from 60% to 80%.

- Southern states: Hot and humid summers, with RH often reaching 80% to 90%.

- Northeast and Midwest: Humid summers, with RH around 60% to 70%.

- Western states: Dry desert air, with RH often below 40%.

- Hawaii and Puerto Rico: High humidity year-round, with RH typically above 70%.

Seasonal variations:

- Summer: Higher humidity across most states.
- Winter: Lower humidity, especially in colder regions.

These humidity levels impact comfort, health, and weather patterns, including fog, mist, and precipitation. Let me know if you'd like more information!