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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
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