Most Humid States 2025

Alabama

77.1%

Florida

74.5%

Louisiana

74%

Mississippi

73.6%

Hawaii

73.3%

Iowa

72.4%

Michigan

72.1%

Indiana

72%

Maine

71.7%

Vermont

71.7%

Alaska

71.6%

Wisconsin

71.6%

Ohio

71.5%

Rhode Island

71.4%

Washington

71.4%

Georgia

71.1%

Massachusetts

71.1%

Arkansas

70.9%

Delaware

70.9%

Illinois

70.9%

North Dakota

70.9%

New York

70.7%

North Carolina

70.6%

Minnesota

70.4%

New Hampshire

70.4%

Kentucky

70.3%

West Virginia

69.7%

Pennsylvania

69.6%

Tennessee

69.4%

Connecticut

69.2%

Missouri

69.2%

South Carolina

69.1%

Maryland

68.8%

Virginia

68.7%

Oregon

68.6%

New Jersey

68.5%

South Dakota

66.4%

Nebraska

65.8%

Kansas

65.7%

Texas

64.9%

Oklahoma

64%

Idaho

62.4%

California

61%

Montana

60.4%

Wyoming

57.1%

Colorado

54.1%

Utah

51.7%

New Mexico

45.9%

Arizona

38.5%

Nevada

38.3%

State	Average Humidity↓	Average Dew Point (°F)
Alabama	77.1%	26.5
Florida	74.5%	62.7
Louisiana	74%	58.3
Mississippi	73.6%	55.6
Hawaii	73.3%	65.2
Iowa	72.4%	39.8
Michigan	72.1%	38.0
Indiana	72%	43.0
Maine	71.7%	34.4
Vermont	71.7%	35.9
Alaska	71.6%	54.0
Wisconsin	71.6%	37.1
Ohio	71.5%	42.0
Rhode Island	71.4%	41.6
Washington	71.4%	39.7
Georgia	71.1%	53.4
Massachusetts	71.1%	39.9
Arkansas	70.9%	50.7
Delaware	70.9%	45.8
Illinois	70.9%	42.7
North Dakota	70.9%	32.6
New York	70.7%	39.4
North Carolina	70.6%	50.4
Minnesota	70.4%	33.9
New Hampshire	70.4%	36.2
Kentucky	70.3%	46.6
West Virginia	69.7%	42.8
Pennsylvania	69.6%	40.9
Tennessee	69.4%	48.4
Connecticut	69.2%	40.7
Missouri	69.2%	45.4
South Carolina	69.1%	51.6
Maryland	68.8%	45.2
Virginia	68.7%	47.3
Oregon	68.6%	39.0
New Jersey	68.5%	42.4
South Dakota	66.4%	34.6
Nebraska	65.8%	37.9
Kansas	65.7%	43.6
Texas	64.9%	53.6
Oklahoma	64%	46.8
Idaho	62.4%	30.9
California	61%	44.2
Montana	60.4%	29.7
Wyoming	57.1%	26.9
Colorado	54.1%	28.8
Utah	51.7%	28.6
New Mexico	45.9%	30.8
Arizona	38.5%	32.5
Nevada	38.3%	27.5

While humidity is the better-known term, the related indicator “dew point” actually has a stronger impact on whether a person senses the humidity and the air feels “sticky”.
Both relative humidity and dew point are displayed in the table below.

Humidity is the concentration of water vapor present in the air. Humidity is a byproduct of the water cycle; as water turns into its gaseous state, water vapor, it begins to fill the air. Atmospheric water vapor also plays an important role in the weather and climate, regulating air temperate by absorbing thermal radiation from the Sun and helping generate precipitation.

Local weathermen typically report relative humidity, a percentage representing the amount of water vapor in the air relative to the maximum amount the air can hold. Temperature determines the humidity capacity of air. As temperatures decrease, air molecules compress and can hold less water vapor. At higher temperatures, the air is capable of holding more water vapor.

Humidity levels affect how temperatures are perceived. Higher levels slow the evaporation of sweat and make it more difficult for bodies to regulate their temperatures, resulting in excessive sweating and increased heart rate and respiration. On the other hand, low humidity can dry skin and allow airborne illnesses to spread more quickly. Most people are the most comfortable at around 30-60% humidity.

Most Humid States in the U.S.

Since humidity levels result from evaporation, they tend to be highest in regions near large bodies of water. Landlocked states with very few large bodies of water tend to be the least humid. States like Nevada, Arizona, Colorado, and New Mexico have relatively low humidity and arid climates. On the other hand, Florida and Louisiana have hot, humid climates due to their warm weather and proximity to the Atlantic.

However, because relative humidity has to do with how much water the air can hold at a specific temperature, rather than the amount of water actually in the air, relative humidity can be much higher in cold areas even though there is less overall moisture in the air. For this reason, Alaska tops the nation for relative humidity levels, despite having much lower absolute humidity than most states in the South.