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About Winds & Air Pressure


 

Wide-area Coverage Charts

Atlantic Ocean - North

Atlantic Ocean - South

Indian Ocean

Mediterranean Sea

North America

Pacific Ocean - East

Pacific Ocean - North

Pacific Ocean - South

Pacific Ocean - West


 

Local-area Detail Charts

Arabian Sea

Australia - New Zealand

Bahamas

Baja Mexico

Baltic Sea

Black Sea

Britain

Canada

Caribbean Sea

Carolina Coast

Central America

Europe North Sea

France Coast

Gibraltar Strait

Gulf of Mexico

Japan

Labrador-Greenland

Magellan Strait

Mexico

New England

Nova Scotia - Newfoundland

Pacific Ocean - Canadian Coast

Pacific Ocean - US Coast

South Africa

South China Sea

United States

U.S. Great Lakes

West Indies


Click on a chart to see the full website.
 
See also information on global wind patterns, atmospheric rivers, and our webpages on Winds Surface and Aloft Current and Forecast and Ocean Weather.

Wide-area Coverage Charts

United States
weather.gov chart not currently available NOAA NCEP chart not currently available

 

Atlantic Ocean - North

Baja Mexico

Bahamas

Canada

Caribbean Sea

Carolina Coast

Gulf of Mexico

Mexico

New England

Pacific Ocean - East

Pacific Ocean - North

U.S. Great Lakes

West Indies

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Temperatures

United States
Weather Channel chart not currently available
Canada
weather.gov chart not currently available

 

Atlantic Ocean - North

Baja Mexico

Bahamas

Caribbean Sea

Carolina Coast

Gulf of Mexico

Mexico

New England

Pacific Ocean - East

Pacific Ocean - North

United States

U.S. Great Lakes

West Indies

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Canada
Canada weather chart not currently available
Atlantic Ocean - North
graphic not found graphic not found

 

Atlantic Ocean - South

Bahamas

Baltic Sea

Britain

Caribbean Sea

Carolina Coast

Central America

Europe North Sea

France Coast

Gibralter Strait

Gulf of Mexico

Labrador-Greenland

Mediterranean Sea

Mexico

New England

North America

Nova Scotia - Newfoundland

United States

West Indies

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Atlantic Ocean - North
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Atlantic Ocean - South
graphic not found graphic not found

Atlantic Ocean - North

Magellan Strait

South Africa

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Atlantic Ocean - South
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Pacific Ocean - North
graphic not found graphic not found

 

Canada

Japan

Mexico

North America

Pacific Ocean - Canadian Coast

Pacific Ocean - East

Pacific Ocean - South

Pacific Ocean - US Coast

Pacific Ocean - West

South China Sea

United States

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Pacific Ocean - North
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Pacific Ocean - East
graphic not found graphic not found

Baja Mexico

Canada

North America

Central America

Mexico

Pacific Ocean - North

Pacific Ocean - South

Pacific Ocean - US Coast

Pacific Ocean - West

United States

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Pacific Ocean - East
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Pacific Ocean - South
graphic not found graphic not found

Australia - New Zealand

Magellan Strait

Pacific Ocean - East

Pacific Ocean - North

Pacific Ocean - West

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Pacific Ocean - South
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Pacific Ocean - West
graphic not found graphic not found

Pacific Ocean - East

Pacific Ocean - North

Pacific Ocean - South

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Pacific Ocean - West
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Indian Ocean
graphic not found graphic not found

Arabian Sea

Australia - New Zealand

Pacific Ocean - East

Pacific Ocean - South

South Africa

South China Sea

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Indian Ocean
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Mediterranean Sea
graphic not found graphic not found

Arabian Sea

Atlantic Ocean - North

Black Sea

Britain

France Coast

Gibralter Strait

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Mediterranean Sea
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        

Local-area Detail Charts

Arabian Sea
graphic not found graphic not found

 

Indian Ocean

Mediterranean Sea

Arabian Sea
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Australia - New Zealand
graphic not found graphic not found

 

Indian Ocean

Pacific Ocean - South

Australia - New Zealand
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Bahamas
graphic not found graphic not found

 

Atlantic Ocean - North

Caribbean Sea

Carolina Coast

Gulf of Mexico

United States

West Indies

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Bahamas
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Baja Mexico
graphic not found graphic not found

 

Mexico

Pacific Ocean - Canadian Coast

Pacific Ocean - US Coast

Pacific Ocean - East

Pacific Ocean - North

United States

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Baja Mexico
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Baltic Sea
graphic not found graphic not found

 

Atlantic Ocean - North

Europe North Sea

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Baltic Sea
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Black Sea
graphic not found graphic not found

 

Mediterranean Sea

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Black Sea
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Britain
graphic not found graphic not found

 

Atlantic Ocean - North

Europe North Sea

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Britain
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Caribbean Sea
graphic not found graphic not found

 

Atlantic Ocean - North

Bahamas

Carolina Coast

Central America

Gulf of Mexico

Mexico

North America

West Indies

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Caribbean Sea
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Carolina Coast
graphic not found graphic not found

 

Atlantic Ocean - North

Bahamas

Caribbean Sea

Gulf of Mexico

North America

Canada

United States

West Indies

Go to top

Carolina Coast
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Central America
graphic not found graphic not found

 

Atlantic Ocean - North

Caribbean Sea

Mexico

North America

Pacific Ocean - East

United States

West Indies

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Central America
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Europe North Sea
graphic not found graphic not found

 

Atlantic Ocean - North

Baltic Sea

Britain

France Coast

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Europe North Sea
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
France Coast
graphic not found graphic not found

 

Atlantic Ocean - North

Europe North Sea

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France Coast
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Gibraltar Strait
graphic not found graphic not found

 

Atlantic Ocean - North

Mediterranean Sea

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Gibraltar Strait
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Gulf of Mexico
graphic not found graphic not found

 

Atlantic Ocean - North

Bahamas

Caribbean Sea

Carolina Coast

Mexico

North America

United States

West Indies

Go to top

Gulf of Mexico
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Japan
graphic not found graphic not found

 

Pacific Ocean - North

Pacific Ocean - West

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Japan
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Labrador-Greenland
graphic not found graphic not found

 

Atlantic Ocean - North

Canada

New England

North America

Nova Scotia - Newfoundland

United States

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Labrador-Greenland
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Magellan Strait
graphic not found graphic not found

 

Atlantic Ocean - South

Pacific Ocean - South

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Magellan Strait
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Mexico
graphic not found graphic not found

 

Baja Mexico

Caribbean Sea

Central America

Gulf of Mexico

North America

Pacific Ocean - East

Pacific Ocean - North

Pacific Ocean - US Coast

United States

West Indies

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Mexico
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
New England
graphic not found graphic not found

 

Atlantic Ocean - North

Canada

Labrador-Greenland

North America

Nova Scotia - Newfoundland

United States

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New England
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Nova Scotia - Newfoundland
graphic not found graphic not found

 

Atlantic Ocean - North

Canada

Labrador-Greenland

New England

North America

United States

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Nova Scotia - Newfoundland
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Pacific Ocean - Canadian Coast
graphic not found graphic not found

 

Canada

North America

Pacific Ocean - East

Pacific Ocean - North

Pacific Ocean - US Coast

United States

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Pacific Ocean - Canadian Coast
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
Pacific Ocean - US Coast
graphic not found graphic not found

 

Baja Mexico

Mexico

Canada

North America

Pacific Ocean - Canadian Coast

Pacific Ocean - East

Pacific Ocean - North

United States

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Pacific Ocean - US Coast
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
South Africa
graphic not found graphic not found

 

Atlantic Ocean - South

Indian Ocean

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South Africa
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
South China Sea
graphic not found graphic not found

 

Pacific Ocean - North

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South China Sea
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
U.S. Great Lakes
graphic not found graphic not found

 

Atlantic Ocean - North

Canada

North America

Pacific Ocean - Canadian Coast

Pacific Ocean - East

Pacific Ocean - North

Pacific Ocean - US Coast

United States

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U.S. Great Lakes
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        
West Indies
graphic not found graphic not found

 

Atlantic Ocean - North

Bahamas

Caribbean Sea

Carolina Coast

Central America

Gulf of Mexico

Mexico

North America

United States

Go to top

West Indies
graphic not found
ºF  32  36  39  43  46  50  54  57   61  64  68  72  75  79  82  86        

About Winds and Air Pressure

planetary winds chart not currently available graphic not found
Planetary Prevailing Winds
Regarding winds and the movement of air masses, the Earth can be divided into three general areas: the polar regions, the temperate zones, and the equatorial regions.
For more about prevailing winds, click here or on the diagram at left.
For an example of airflow transitioning from the equatorial zone (west-bound) to the temperate zone (east-bound), see the chart at right.
Air pressure

Air pressure is shown in millibars or inches.  The average (standard) air pressure at sea level is 1013 millibars (mb), or 29.92 inches.

Any area with a lower value is an area of low pressure.  Any area with a higher value is an area of high pressure.  The further the pressure is from 1013, the greater the speed of the associated winds.

Weather charts will often label an area as a low, even if it is above 1013 but it is surrounded by higher air pressures, particularly if the winds are circulating counter-clockwise (in the northern hemisphere).

High pressure tends to bring sunny weather.

Low pressure tends to bring clouds and precipitation (rain, sleet, or snow, depending on the temperature).

Air pressure declines as the altitude rises above sea level, which means you get less oxygen with each breath.  At 11,000 feet, the air pressure is only two-thirds (670 mb), which means you are only getting two-thirds as much oxygen in each breath as normal.  At 18,000 feet, the air pressure is only half (506 mb).  These are standard values; the actual air pressures will vary, as they do at ground level.

Peoples' tolerance for getting less oxygen varies; some people can go no higher than 5,000 feet (843 mb); others can go as high as 14,000 feet (595 mb) with no problem.  The bodies of people who live at high altitudes adapt, and those people can go higher.  Vision can also be affected by high altitude, particularly at night.

The lowest pressure ever recorded (at sea level) was 867.93 millibars, in the eye of typhoon Tip over the Pacific Ocean on 12 October 1979.

The highest air pressure ever recorded was 1085.68 millibars at Tosontsengel, Mongolia, on 19 December 2001.

Inches Hg   to   Millibars   to   Altitude   conversion   (standard pressure)
29.92" = 1013 mb = 0000'       23.98" = 0812 mb = 6000'       14.76" = 0500 mb = 18,000'
28.85" = 0977 mb = 1000' 23.09" = 0782 mb = 7000' 11.81" = 0400 mb = 24,000'
27.82" = 0942 mb = 2000' 22.24" = 0753 mb = 8000' 8.86" = 0300 mb = 30,000'
26.81" = 0908 mb = 3000' 21.38" = 0724 mb = 9000' 6.64" = 0225 mb = 36,000'
25.84" = 0875 mb = 4000' 20.58" = 0697 mb = 10,000' 5.17" = 0175 mb = 42,000'
24.89" = 0843 mb = 5000' 19.19" = 0650 mb = 12,000' 3.69" = 0125 mb = 48,000'

For more about the current winds, temperatures, and moisture levels at various altitudes, see our webpage about Skew-T Log-P Charts.

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