How is air temperature accurately measured?

For example, my thermometer in the sun rates the temperature vastly different to the one in the shade. When you see a temperature guide on the weather forecast, how do they measure the temperature so that the thermometer is unaffected by the sun/shade effect?

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One Response to “How is air temperature accurately measured?”

  1. djgenteel - December 17th, 2009

    Most weather data is collected from outstations where they have a box on a stand with louvred sides. Inside is a wet and dry bulb thermometer to measure the air temperature. But of course the figures that appear on our TV screens are simply a computerised forecast of the likely figure.
    Heres one I saved earlier

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