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Nevada
38.3%
Arizona
38.5%
New Mexico
45.9%
Utah
51.7%
Colorado
54.1%
Wyoming
57.1%
Montana
60.4%
California
61%
Idaho
62.4%
Oklahoma
64%
Texas
64.9%
Kansas
65.7%
Nebraska
65.8%
South Dakota
66.4%
New Jersey
68.5%
Oregon
68.6%
Virginia
68.7%
Maryland
68.8%
South Carolina
69.1%
Missouri
69.2%
Connecticut
69.2%
Tennessee
69.4%
Pennsylvania
69.6%
West Virginia
69.7%
Kentucky
70.3%
New Hampshire
70.4%
Minnesota
70.4%
North Carolina
70.6%
New York
70.7%
North Dakota
70.9%
Illinois
70.9%
Delaware
70.9%
Arkansas
70.9%
Massachusetts
71.1%
Georgia
71.1%
Washington
71.4%
Rhode Island
71.4%
Ohio
71.5%
Wisconsin
71.6%
Alabama
71.6%
Vermont
71.7%
Maine
71.7%
Indiana
72%
Michigan
72.1%
Iowa
72.4%
Hawaii
73.3%
Mississippi
73.6%
Louisiana
74%
Florida
74.5%
Alaska
77.1%

Least Humid States 2024

Least Humid States 2024

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, as 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.

Least Humid States in the U.S.

As humidity levels rise as water evaporates, the states with the highest levels of humidity have a significant presence of water. On the other hand, states with large desert landscapes and fewer bodies of water typically have lower humidity levels. States such as Nevada and Arizona have arid climates and are known for their deserts.

The states with the lowest relative humidity are:

State
Average Relative Humidity
Nevada38.3%
Arizona38.5%
New Mexico45.9%
Utah51.7%
Colorado54.1%
Wyoming57.1%
Montana60.4%
California61%
Idaho62.4%
Oklahoma64%

Least Humid Cities in the U.S.

The least humid major cities in the United States are:

  1. Las Vegas, NV (30.3%)
  2. Phoenix, AZ (36.6%)
  1. Denver, CO (52.0%)
  2. Salt Lake City, UT (55.3%)
  3. New York, NY (63.0%)
  1. Washington, DC (64.3%)
  2. Oklahoma City, OK (64.9%)
  3. Dallas, TX (65.4%)
  1. Baltimore, MD (65.8%)
  2. Hartford, CT (66.0%)

Least Humid States 2024

  • 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".
  • For example, Alaska has the highest relative humidity in the US, but the lowest dew point.
  • Both relative humidity and dew point are displayed in the table below.

Download Table Data

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State
Average Relative Humidity
Average Dew Point (F)
Nevada38.3%27.5
Arizona38.5%32.5
New Mexico45.9%30.8
Utah51.7%28.6
Colorado54.1%28.8
Wyoming57.1%26.9
Montana60.4%29.7
California61%44.2
Idaho62.4%30.9
Oklahoma64%46.8
Texas64.9%53.6
Kansas65.7%43.6
Nebraska65.8%37.9
South Dakota66.4%34.6
New Jersey68.5%42.4
Oregon68.6%39
Virginia68.7%47.3
Maryland68.8%45.2
South Carolina69.1%51.6
Connecticut69.2%40.7
Missouri69.2%45.4
Tennessee69.4%48.4
Pennsylvania69.6%40.9
West Virginia69.7%42.8
Kentucky70.3%46.6
Minnesota70.4%33.9
New Hampshire70.4%36.2
North Carolina70.6%50.4
New York70.7%39.4
Arkansas70.9%50.7
Delaware70.9%45.8
Illinois70.9%42.7
North Dakota70.9%32.6
Georgia71.1%53.4
Massachusetts71.1%39.9
Rhode Island71.4%41.6
Washington71.4%39.7
Ohio71.5%42
Alabama71.6%54
Wisconsin71.6%37.1
Maine71.7%34.4
Vermont71.7%35.9
Indiana72%43
Michigan72.1%38
Iowa72.4%39.8
Hawaii73.3%65.2
Mississippi73.6%55.6
Louisiana74%58.3
Florida74.5%62.7
Alaska77.1%26.5
showing: 50 rows

Sources