Caveats regarding OpenWeatherMap API

Temperature unit inconsistencies

OpenWeatherMap returns temperatures either in Celsius or Kelvin. There is no indication of which unit is currently in effect and the API does not document this inconsistency. Examples are:

// http://api.openweathermap.org/data/2.5/weather?q=London,uk
// Archive: http://web.archive.org/web/20150315104056/http://api.openweathermap.org/data/2.5/weather?q=London,uk
{
    "main": {
        "temp": 285.55,    // Kelvin
        "pressure": 1020,
        "humidity": 82,
        "temp_min": 283.15,
        "temp_max": 287.15
    }
    ...
}

// http://api.openweathermap.org/data/2.5/box/city?bbox=12,32,15,37
// Archive: http://web.archive.org/web/20150706053457/http://api.openweathermap.org/data/2.5/box/city?bbox=12,32,15,37
{
    ...
    "list": [{
        ...
        "main": {
            "temp": 23.92,      // Celsius here
            "temp_min": 23.915,
            "temp_max": 23.915,
            "pressure": 1031.47,
            "sea_level": 1032.82,
            "grnd_level": 1031.47,
            "humidity": 95
        }
        ...
    }]
}

Incorrect Geo-info in Europe and Asia