You can use this weather website which uses exactly the same weather data WeatherAds uses for it's weather targeting to check the accuracy of the forecasts and current weather conditions. 

To check the weather for a specific location, simply use the search bar in the top left hand area of the site and type in the location that you wish to check.
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To check current conditions, click on the 'latest' tab, and then navigate to the first location displayed in the list of 3, which will be the closest weather station to the location that you searched for.