The Arduino platform easily lends itself to weather measurement, and such factors as temperature, humidity and light levels can easily be monitored with various sensors and modules. However for more complex parameters such as wind chill, you can either purchase a commercial unit - or make your own as Instructables member musuzuki777 has done.
To measure wind chill (which is the felt air temperature on exposed skin due to wind. It measures the effect of wind on air temperature) you need an anemometer (wind speed sensor) and a thermometer. Temperature sensors are simple, however the anemometer requires some hardware such as PVC piping and some hemispheres to be spun by the air flow as shown below:
Once the wind speed and temperature data is captured, the wind chill factor can be calculated. For accuract some level of calibration is required, however this is explained in the Instructable. So for more information on how to make your own device, visit the project page. And for more, we're on facebook, Google+, and twitter - so follow us for news and product updates as well.
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