Smart home. The relation of temperatures "inside" and "outside".

Smart home. The relation of temperatures "inside" and "outside".

From the first glance, ideal temperature is a subjective notion. It's a usual thing when some people open windows widely, while others wrap up themselves in sweaters and drink hot tea at one and the same room.
One badly tolerates heat, another is afraid of cold. When you are in a room, your comfort temperature depends not only on your physical peculiarities as of a human being, but also your comfort temperature is unique for every surroundings you are in.
The quality of isolation, the tasks you do at home, the amount of working equipment - there is a lot of factors which affect our perception of desired temperature. The comfort temperature is a balance between a wish to wrap up yourself in tons of clothes and a rush every 10 min to cold shower.

Intellectual management of buildings. Weather API

Intellectual management of buildings. Weather API

Intellectual management of buildings simultaneously solves 2 crucial tasks: it lets decrease  electric power cost and reduce CO2 emission and it all together has a positive effect on ecology.  
For the present moment there exist ready solutions which allow reasonable management of all the equipment: lighting, air conditioning, ventilation, heating, cooling, secure systems, etc.
Effective tools of monitoring observe functioning of a building in real-time mode: the tools calculate energy consumption, analyze current technical issues, trace surplus of CO2 and its emission.
The analysis of data received with the monitoring tools also implements management of processes taking place in buildings remotely. For getting actual information, one needs only to launch a browser.     

And here an easy access to a huge storage of data arrays is really necessary: data of different kinds comes constantly and is being processed in real-time mode. 
Our OpenWeatherMap team is happy to know that our development of weather APIs which are used as a part of global solutions in such projects throughout the world contributes to increasing of energy effectiveness and thus helps to improve ecological situation.   

We are happy to announce that one of our products - API for UV-index has got significant improvement

We are happy to announce that one of our products - API for UV-index has got significant improvement

We are happy to announce that one of our products - API for UV-index has got significant improvement.    
- Now besides current and historical data, you can also get UVI forecasts for periods of 8 days.    
Syntax has got considerably easier,  it has become clearer and more unified like other APIs version 2.5.  
- There is a new feature to request data on any geographic coordinates without limits on accuracy.
Accuracy of UVI modeled data has been increased twice (the interpolation grid step decreased from 0.5 to 0.25 degrees).      
- Soon the support of search by city name, city id and zip-code will be available. 

You can find the instructions for the updated version here http://openweathermap.org/api/uvi 

Please pay attention that during 2 weeks UV-index data will be in open access.  Further, access to this data will be available only for paid plans starting from Developer. For more information on our plans please visit  http://openweathermap.org/price

The previous version of API (http://openweathermap.org/api/old-uvi) will be announced deprecated soon, and no support will be provided for this version.

We extended the list of supported languages for weather conditions.

We extended the list of supported languages for weather conditions.

Do you want to receive weather data in your language? We extended the list of supported languages for weather conditions.
Now in our API the following languages are available:

Arabic (ar); Czech (cz); Greek (el); Persian(Farsi) (fa); Galician (gl); Hungarian (hu); Japanese (ja); Korean (kr); Latvian (la); Lithuanian (lt); Macedonian (mk); Slovak (sk); Slovenian (sl); Vietnamese (vi).

We invite all our users to test translations for weather conditions in different languages. We will be happy to extend our language support according to your wishes. If you have any questions or suggestions - please send them to https://openweathermap.desk.com/. The specification for all weather conditions in English is available here: http://openweathermap.org/weather-conditions

New styles for weather maps API

New styles for weather maps API

We added new version of rendering styles for Weathermap API.

To get weather map layers in new predefined styles you need to add _new to the appropriate layer name like the following:

http://tile.openweathermap.org/map/{layer}_new/{z}/{x}/{y}.png?appid={api_key}
History Bulk documentation

History Bulk documentation

For your convenience while working with our historical data we have created History Bulk section at OpenWeatherMap.com. There you can find a manual on data extraction for different time periods and cities, also there are examples of data extraction in JSON and CSV file formats and description of weather parameters.

Weather maps API updated

Weather maps API updated

Example of weather map layer  - layer's name: temperature, area: worldwide

OpenWeatherMap VANE platform provides many kinds of weather layers including Precipitation, Clouds, Pressure, Temperature, Wind, Snow and Rain.
See the full list of available layers at http://openweathermap.org/api/weathermaps#examples
You can connect them to mobile and web apps as ZXY-tile layers. It is also possible to combine several base maps and overlays in one map like in the following Weathermap example.
The documentation for Weather Maps has been updated. And there is an important change - please pay your attention, that starting from the next week, API key to access tiles will be obligatory.
Note, that Weather Maps are available for Free keys as well as for all paid ones.

Weather Historical Bulk is launched!

Weather Historical Bulk is launched!

We are happy to introduce you our new service which provides weather historical data for more than 30,000 cities for the last 5 years.

Now you can simply choose a city (or several cities) and download an archive, which contains bulk file with the weather history up to 5 years - any day, week or even several years. Pricing is simple and easy - just $10 for one city, no matter how much data will you receive http://openweathermap.org/price. Just sign in and place an order on your personal page https://home.openweathermap.org/history_bulks/new. Please note that our traditional History API stays the same.

One of the most popular cases for weather API’s usage is the weather widgets.

One of the most popular cases for weather API’s usage is the weather widgets.

OpenWeatherMap provides a bunch of weather API’s for developers, who create this kind of apps and many others. But our site is quite visited by users who’d like to check the weather for the certain city - so we created a various stuff of widgets you can copy and paste into your web page or blog as a ready-to-use JS code snippets no programming skills required.

Weather alerts from OpenWeatherMap

Weather alerts from OpenWeatherMap

We invite you to try our new product - the weather alerts which are based on our meteorological data.

Now you can use simple syntax and a few methods of the API to create triggers which will be working upon the occurrence of specified weather conditions (temperature, humidity, pressure, etc.) in a certain period of time. For example, if you are interested in the forecast of approach of frosts or probability of strengthening of wind in a certain place, then you can get this information by using our new tool. More detailed description of work with service is given below.

The alerts will be generated in our service after performing conditions of the trigger. It is necessary to poll service with a certain interval of time to receive it. In the future we are planning development of this direction, addition of push-notifications and new data sources.
http://openweathermap.org/triggers

Weather Alerts structure
http://openweathermap.org/triggers-struct