Migrate from Dark Sky API to OpenWeather One Call API

With our One Call API you can easily migrate from the Dark Sky API and get free access to main weather data such as current weather, forecast and historical weather with only one call to the API.

Features of OpenWeather One Call API

Free access

One Call API is included in the Free subscription with 1,000 API calls per day. Many other products are available in the same Free subscription, such as Weather Maps, Weather Alerts, etc.
Essential weather data with one API call

One Call API provides you with the following weather data for any location:
- Current weather
- Minute forecast data for the next 1 hour
- Hourly forecast data for the next 48 hours
- Daily forecast data for the next 7 days
- Historical weather data for 5 previous days
- National weather alerts
Matching parameters of Dark Sky API and OpenWeather One Call API

To match Dark Sky API parameters to the equivalent OpenWeather One Call API parameters, please use this table.

Subscribe for free

How to start using One Call API

There are 3 simple steps:

Sign up

You will receive a welcome email that contains endpoints and instructions.
Get API key

On the account page find the "API key" tab and get the API key. Please use your API key in each API call.
Call API
- Getting current, minute, hourly and daily forecast weather data
  
  https://api.openweathermap.org/data/2.5/onecall?lat={lat}&lon={lon}&appid={API key}
- Getting historical weather data for 5 previous days
  
  https://api.openweathermap.org/data/2.5/onecall/timemachine?lat={lat}&lon={lon}&dt={time}&appid={API key}

Parameters
`lat, lon`	required	Geographical coordinates (latitude, longitude)
`appid`	required	Your unique API key (you can always find it on your account page under the "API key" tab)
`dt`	optional	Date from the 5 previous days (unix time, UTC time zone), e.g. dt=1586468027

One Call API documentation (complete description of API calls and parameters in API response, with examples).

One Call API documentation

Matching parameters

One Call API	Dark Sky API	Description
`timezone`	`timezone`	Time zone name of the requested location
Current weather (parameters of current weather and historical weather are the same)
`dt`	`time`	UTC time zone
`sunrise`	`sunriseTime`	Sunrise time, unix, UTC
`sunset`	`sunsetTime`	Sunset time, unix, UTC
`temp`	`temperature`	Temperature. Unit Default: Kelvin. How to change units format
`feels_like`	`apparentTemperature`	Feels like. Unit Default: Kelvin. How to change units format
`pressure`	`pressure`	Atmospheric pressure on the sea level, hPa
`humidity`	`humidity`	Humidity, %
`dew_point`	`dewPoint`	Dew point. Unit Default: Kelvin. How to change units format
`clouds`	`cloudCover`	Cloudiness, %
`wind_speed`	`windSpeed`	Wind speed. Unit Default: meter/sec. How to change units format
`wind_gust`	`windGust`	Wind gust. Unit Default: meter/sec. How to change units format
`wind_deg`	`windBearing`	Wind direction, degrees (meteorological)
`weather.description`	`summary`	Weather condition within the group. Full list of weather conditions You can get the output in your language. Learn more
`weather.icon`	`icon`	Weather icon id. How to get icons
`rain`	`precipIntensity`	Precipitation volume, mm
`snow`	`precipIntensity`	Snow volume, mm
`uvi`	`uvIndex`	UV index
`visibility`	`visibility`	Average visibility, meters
Minute forecast for 1 hour
`dt`	`time`	Time of forecasted data, unix, UTC
`precipitation`	`precipIntensity`	Precipitation volume, mm
Hourly forecast for 48 hours (parameters of hourly forecast and historical weather are the same)
`dt`	`time`	Time of forecasted data, unix, UTC
`temp`	`temperature`	Temperature. Unit Default: Kelvin. How to change units format
`feels_like`	`apparentTemperature`	Feels like. Unit Default: Kelvin. How to change units format
`pressure`	`pressure`	Atmospheric pressure on the sea level, hPa
`humidity`	`humidity`	Humidity, %
`dew_point`	`dewPoint`	Dew point. Unit Default: Kelvin. How to change units format
`clouds`	`cloudCover`	Cloudiness, %
`wind_speed`	`windSpeed`	Wind speed. Unit Default: meter/sec. How to change units format
`wind_gust`	`windGust`	Wind gust. Unit Default: meter/sec. How to change units format
`wind_deg`	`windBearing`	Wind direction, degrees (meteorological)
`weather.description`	`summary`	Weather condition within the group. Full list of weather conditions You can get the output in your language. Learn more
`weather.icon`	`icon`	Weather icon id. How to get icons
`rain`	`precipIntensity`	Precipitation volume, mm
`snow`	`precipIntensity`	Snow volume, mm
`visibility`	`visibility`	Average visibility, meters
Daily forecast for 7 days
`dt`	`time`	Time of data forecasted, unix, UTC
`sunrise`	`sunriseTime`	Sunrise time, unix, UTC
`sunset`	`sunsetTime`	Sunset time, unix, UTC
`temp.day`	`temperatureHigh`	Day temperature. Unit Default: Kelvin. How to change units format
`temp.night`	`temperatureLow`	Night temperature. Unit Default: Kelvin. How to change units format
`temp.morn`	-	Morning temperature. Unit Default: Kelvin. How to change units format
`temp.eve`	-	Evening temperature. Unit Default: Kelvin. How to change units format
`temp.min`	`temperatureMin`	Unit Default: Kelvin. How to change units format
`temp.max`	`temperatureMax`	Unit Default: Kelvin. How to change units format
`feels_like.day`	`apparentTemperatureHigh`	Unit Default: Kelvin. How to change units format
`feels_like.night`	`apparentTemperatureLow`	Unit Default: Kelvin. How to change units format
`feels_like.morn`	-	Unit Default: Kelvin. How to change units format
`feels_like.eve`	-	Unit Default: Kelvin. How to change units format
`pressure`	`pressure`	Atmospheric pressure on the sea level, hPa
`humidity`	`humidity`	Humidity, %
`dew_point`	`dewPoint`	Unit Default: Kelvin. How to change units format
`clouds`	`cloudCover`	Cloudiness, %
`wind_speed`	`windSpeed`	Wind speed. Unit Default: meter/sec. How to change units format
`wind_gust`	`windGust`	Wind gust. Unit Default: meter/sec. How to change units format
`wind_deg`	`windBearing`	Wind direction, degrees (meteorological)
`weather.description`	`summary`	Weather condition within the group. Full list of weather conditions You can get the output in your language. Learn more
`weather.icon`	`icon`	Weather icon id. How to get icons
`rain`	`precipIntensity`	Precipitation volume, mm
`snow`	`precipIntensity`	Snow volume, mm
`uvi`	`uvIndex`	UV index
`visibility`	`visibility`	Average visibility, meters

How to migrate from Dark Sky API to OpenWeather One Call API

Features of OpenWeather One Call API

How to start using One Call API

Matching parameters