The seven weather elements are temperature, air pressure, cloud formation, humidity, precipitation, sunshine and wind velocity. These are the weather elements that are charted to enhance safety and quality of life.
Using a thermometer, the temperature is measured in degrees Celsius or degrees Fahrenheit .Thermometers must be shaded from direct sunlight and be exposed to circulating air. Precipitation is measured using a rain gauge and the depth of the rain is recorded in millimeters. Wind velocity or wind speed is measured using an anemometer, which is then recorded on the Beaufort scale. Cloud cover is measured in units called okta where each okta represents one eighth of the sky that is covered by cloud. Air pressure is measured by using a barometer and is stated in millibars. The greater the reading in millibars, the higher the pressure. A high-pressure area is called an anticyclone while an area of low pressure is called a depression.