Update: Yahoo! Weather

Since the old Yahoo feeds stopped working, I’ve switched my code to use https://developer.yahoo.com/weather/

Note, contrary to what the documentation says, you don’t  need any API keys or authentication.  You can just make a standard GET request and get JSON data back.

The developer page mentions a rate limit of 2,000 signed calls a day but again there’s no indication if/how this is being enforced.

The format is slightly different.  First you need to construct a YQL query, however this is well documented.

Some example PHP code of my own (using the FuelPHP framework):

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  1. // Build query for correct city  
  2. $BASE_URL      = "http://query.yahooapis.com/v1/public/yql";  
  3. $yql_query     = sprintf('select * from weather.forecast where woeid in (select woeid from geo.places(1) where woeid=%d)',  
  4.     \Fuel\Core\Config::get('default_weather_loc_id.yahoo'));  
  5.   
  6. $yql_query_url = $BASE_URL . "?q=" . urlencode($yql_query) . "&format=json";  
  7.   
  8. // Make call with cURL  
  9. $session = curl_init($yql_query_url);  
  10. curl_setopt($session, CURLOPT_RETURNTRANSFER, true);  
  11. $json = curl_exec($session);  
  12.   
  13. if (curl_errno($session)) {  
  14.     \Log::error('Yahoo check: '.curl_error($session));  
  15. }  
  16.   
  17. $weather_data = json_decode($json);  
  18.   
  19. if (! property_exists($weather_data, 'query')) {  
  20.     return false;  
  21. }  
  22.   
  23. return $weather_data->query->results->channel;  

Note, regardless how much data you request, the results are contained inside a JSON channel object, which is inside results, which in turn is within the main query object.