edit 4/27/2015
This curl examples for this API are broken. – the API now requires a key: http://openweathermap.org/api
notes
I’m using this API now instead of the CORDC wind forecast data for the internet-sensors wind example. You can get 7 day forecast data for practically anywhere. Also historical data is available. And its free.
Get forecast by city id
Weather forecast in the city for the next 7 days.
http://api.openweathermap.org/data/2.1/forecast/city/{CITY_ID}
http://api.openweathermap.org/data/2.1/forecast/city/524901
{"message":"","cod":"200","calctime":0.0189,"list":[
{"dt":1345251600,
"main":{"temp":286.6,"humidity":98,"pressure":1002,"temp_min":286,"temp_max":287},
"wind":{"speed":0,"deg":-2},
"rain":{"3h":2},
"clouds":{"all":56},
"weather":{"id":803,"main":"Clouds","description":"broken clouds", "img":"..." }
....
This gets city code for santa cruz – 5393052
curl http://api.openweathermap.org/data/2.1/find/name?q=santa%20cruz,US
this gets 7 days of santa cruz forecasts with time stamps
curl http://api.openweathermap.org/data/2.1/forecast/city/5393052
typical JSON response (for one datapoint):
{
"dt": 1364176800,
"main": {
"temp": 285.54,
"temp_min": 282.6,
"temp_max": 287.5,
"pressure": 1015.99,
"humidity": 87.6,
"temp_kf": 2.94
},
"weather": [{
"id": 801,
"main": "Clouds",
"description": "few clouds",
"icon": "02n"
}],
"clouds": {
"all": 17,
"low": 0,
"middle": 0,
"high": 17
},
"wind": {
"speed": 4.29,
"deg": 311,
"gust": 5.1
},
"dt_txt": "2013-03-25 02:00:00"
}
So… to get precipitation, we need to just look for “rain”, or “snow” indicator