Example Open Weather Map API call: api.openweathermap.org/data/2.5/weather?q=London&appid={API key}

reply.json

 {
     "coord": {
       "lon": -0.13,
       "lat": 51.51
     },
     "weather": [
       {
         "id": 300,
         "main": "Drizzle",
         "description": "light intensity drizzle",
         "icon": "09d"
       }
     ],
     "base": "stations",
     "main": {
       "temp": 280.32,
       "pressure": 1012,
       "humidity": 81,
       "temp_min": 279.15,
       "temp_max": 281.15
     },
     "visibility": 10000,
     "wind": {
       "speed": 4.1,
       "deg": 80
     },
     "clouds": {
       "all": 90
     },
     "dt": 1485789600,
     "sys": {
       "type": 1,
       "id": 5091,
       "message": 0.0103,
       "country": "GB",
       "sunrise": 1485762037,
       "sunset": 1485794875
     },
     "id": 2643743,
     "name": "London",
     "cod": 200
     }