Weather Forecasts

Temperature

Temperature – how hot or how cold the air is

Instrument: ThermometerUnits: degrees C or degrees F

Humidity

Humidity – the amount of water vapor in the air

Instrument: HygrometerUnits: 0 – 100% (percentage of the maximum water the air can hold)

Wind Direction

Wind Direction – the compass direction from which the wind is coming from

Instrument: Wind VaneUnits: Compass direction

(N, SW, ESE, etc.)

Wind Speed

Wind Speed – how fast the air is moving past a measuring point

Instrument: AnemometerUnits: mph, meters per second, etc.

Air Pressure

Air Pressure – the force of the air pushing in all directions

Instrument: BarometerUnits: millibars

Visibility

Visibility – the distance one can see through the air

Instrument: EyesightUnits: miles