Air Temperature
Measured in degrees Fahrenheit by a sensor located six feet off the ground.

Dew Point
Temperature at which the air is fully saturated with moisture.

Barometric Pressure
The amount of downward force exerted by the weight of the air above us and is measured in inches of mercury.

Wind Speed
The average velocity at which the air travels over a one-minute period and is measured in nautical miles per hour (nm/hr or knots). The main display is in miles per hour (mph) with the knots in parentheses.

Wind Gust
The highest wind speed registered over the previous 10 minutes and is measured in nautical miles per hour (nm/h or knots). If no gusts are detected more than 5 nm/h faster than the average wind speed, this field is zero. The main display is in miles per hour (mph) with the knots in parentheses.

Wind Direction
The average direction from which the wind is coming and is measured in degrees from north. The main display is given by an alphabetic code denoting the direction with degrees from north in parentheses.

Visibility
The distance a person can see with normal vision, and is measured in miles.

Precipitation
Any form of water, such as rain, snow, sleet, or hail, that falls to the earth's surface.

1st Cloud Layer
Height above the earth's surface of the lowest layer of clouds or obscuring phenomena that is reported as "broken", "overcast", or "obscuration", and not classified as "thin" or "partial".

2nd Cloud Layer
Height above the earth's surface of the 2nd layer of clouds.

3rd Cloud Layer
Height above the earth's surface of the 3rd layer of clouds.