Air Quality Widget - New Improved Feed

Posted on July 28th 2015

{ widget : feed }

In order to improve the integration of our AQI widgets within external websites, we have developped a new widget API feed. Compared to the existing widget feed, this new API feed provides much more flexibility for the integration, but also many more options for customzing the widget appearance.

You can, for instance, display a tiny widget as simple as ... (move your mouse over the AQI number in order view the details), or a larger widget with details about the past 24 hours pollutants as shown on the right.

The new framework also supports templating, mutiple languages (English, Simplified and traditional Chinese, Spanish, ...) as well as possibility to do programatic integration with data based javascript callbacks.

A. Basic setup

The basic integration is simple and straight forward. You first need to add the following piece of code:
<script  type="text/javascript"  charset="utf-8">  
    (function(w,d,t,f){  w[f]=w[f]||function(c,k,n){s=w[f],k=s['k']=(s['k']||(k?('&k='+k):''));s['c']=  
    c=(c  instanceof  Array)?c:[c];s['n']=n=n||0;L=d.createElement(t),e=d.getElementsByTagName(t)[0];  
    e.parentNode.insertBefore(L,e);  };  })(  window,document,'script','_aqiFeed'  );    
Then, just add this other code to include the widget:
<span  id="city-aqi-container"></span>  
<script  type="text/javascript"  charset="utf-8">  
    _aqiFeed({  container:"city-aqi-container",  city:"beijing"  });  

The function _aqiFeed takes as argument the configuration block for the widget. The parameter container: "city-aqi-container" refers to the id of the tag in which you want to insert the widget (eg <span id='city-aqi-container'></span>), and the parameter city the name of the city for which you want to show the current Air Quality reading (eg city: "london").

B. Specifiying the Language

You can also specify the language to be used by setting the lang option. For instance, to include the widget in Chinese (as shown on the right), use the following code:
The currently supported languages are Chinese simplifed "cn", Chinese traditonal "hk", Japanese "jp", Korean "kr", Russia "ru", Spanish "es", French "fr" and Polish "pl". If not specified or set to null, English is used.

C. Specifiying the display format

It is possible to customize the text to be displayed within the widget by specifiying the display option. For instance, to display with both the textual "AQI" name as well as the update time (as shown on the widget on the left), you can use the following code:
  display:"%cityname  AQI  is  %aqi<br><small>on  %date</small>",  

The parameter display is an HTML-based string, and can contain any of the the following keywords:
  • %cityname for the name of the city (eg Beijing),
  • %aqi for the decorated AQI value (eg 58),
  • %aqiv for the undecorated (raw text) AQI value (eg 58),
  • %style for the css declaration of the decorated AQI details (eg background-color: #ffde33;color:#000000;),
  • %time for the time at which the AQI was updated (eg Wed 20:00),
  • %impact for the associated health impact (eg Good, Moderate...)
  • %attribution for the AQI data attribution ( eg Beijing Environmental Protection Monitoring Center)
  • %details for the full AQI details (the content of the popup displayed when moving the mouse over the AQI value).
Few examples:
Display ConfigurationResult

D. Programatic callback

If you prefer DIY integration, can you can also specify a javascript function callback to be when the data is loaded.
Just add the option callback in the parameter block, such as for instance:
_aqiFeed({  city:"beijing",  callback:function(aqi){  
  /*  Do  whatever  you  want  with  the  AQI  object  */  
}  });

For instance, assuming that you are also using jquery, the following code:
<div  id='my-container'></div>  
<script  type="text/javascript"  charset="utf-8">  
_aqiFeed({  city:"beijing",  lang:"pl",  callback:function(aqi){  
}  });  
will produce the following content:

The aqi objects contains all the keywords mentionned in the section C (display format).

E. Including multiple widgets

Including multiple widgets in a single page is possible. All you need is to pass to the _aqiFeed function an array with all the widgets you need to include. For instance, to insert London, Paris and New York, can do use this code:
var  cities  =  ["london",  "newyork",  "seoul",  "guangzhou",  "tokyo",  "shanghai",  "paris","hongkong"];  
var  aqiWidgetConfig  =  [];    
cities.forEach(function(city)  {  aqiWidgetConfig.push({city:city,  callback:  displayCity});  });  
function  displayCity(aqi)  {  
The result is:

F. Feed usage

This widget feed is provided for free, and for the sole purpose of integrating the feed into other websites (i.e. apps are excluded), and under the condition of reasonable and acceptable use. We reserve the right to change the feed structure (data format) at any time and without prior notice, so better to contact us if you plan to do a custom integration.

When doing the integration, there are few deontological rules which should be applied when using the data feed:
  • First, always make sure that the attribution to the originating EPA is present. All the Air Quality data you can find on the World Air Quality Index project is thanks to the hard work from all the EPA's all over the world, so please make sure to provide the attribution for their work too. If you use the programtic API, the attribution is available from the attribution field.

  • If you are from an instution and usign the data, please, show respect and pay back the credits for our work. If you are trying to scrape the data feed, please, keep in mind that this project relies on sponsorship and cooperation projects, so consider supporting us rather than scrapping us, especially if you are a large scale institution or university.

  • As a matter of fact, do not act like the WRI (World Resource Institute ): Scrapping the overall World Air Quality Index project data feed, and beeing so cheap that they would not even give any attribution for our work, and this despite their 80 millions annual USD fundings. Don't believe us? Check this snapshot.

G. Future improvments

This is the first version of this new widget feed API. There are quite a few improvments already in the pipeline, such as adjustable graphic width and height, selectable AQI scale, etc. If you would like to suggest any other specifc improvment, feel free to send us a message.

Click here to see all the FAQ entries
  • Nitrogen Dioxyde (NO2) in our atmosphere
  • Ozone AQI Scale update
  • Kriging Interpolation

  • comments powered by Disqus

    O pomiarach jakości powietrza i zanieczyszczeń:

    O Poziomach Jakości Powietrza

    -Wartości Indeksu Jakości Powietrza (AQI)Poziomy zagrożenia zdrowia
    0 - 50Dobra0-50: Dobra - Jakość powietrza jest uznawana za zadowalającą, a zanieczyszczenie powietrza stanowi niewielkie ryzyko lub jego brak.
    51 -100Średnia50-100: Średnia - Jakość powietrza jest dopuszczalna; jednak niektóre zanieczyszczenia mogą być umiarkowanie szkodliwe dla bardzo małej liczby osób, które są niezwykle wrażliwe na zanieczyszczenie powietrza.
    101-150Niezdrowa dla osób wrażliwych100-150: Niezdrowe dla wrażliwych osób - u osób wrażliwych mogą wystąpić negatywne skutki dla zdrowia. Większość populacji może nie odczuwać negatywnych objawów.
    151-200Niezdrowa150-200: Niezdrowe - Każdy może zacząć doświadczać negatywnych skutków zdrowotnych; U osób wrażliwych mogą wystąpić poważniejsze skutki zdrowotne.
    201-300Bardzo niezdrowa200-300: Bardzo niezdrowe - Ostrzeżenie zdrowotne, poziom alarmowy. Bardzo prawdopodobny negatywny wpływ na całą populację.
    300+Zagrożenie dla życia300 : Niebezpieczny - Alarm Zdrowotny: każdy może doświadczyć poważniejszych skutków zdrowotnych.

    Aby dowiedzieć się więcej na temat jakości powietrza i zanieczyszczenia, sprawdź w wikipedii temat "jakość powietrza" lub nasz poradnik o jakości powietrza i jego wpływie na Twoje zdrowie.

    Więcej przydatnych informacji zdrowotnych na blogu doktora Richarda Sainta z Pekinu: .

    Usage Notice: All the Air Quality data are unvalidated at the time of publication, and due to quality assurance these data may be amended, without notice, at any time. The World Air Quality Index project has exercised all reasonable skill and care in compiling the contents of this information and under no circumstances will the World Air Quality Index project team or its agents be liable in contract, tort or otherwise for any loss, injury or damage arising directly or indirectly from the supply of this data.


    Ustawienia Języka:

    Temperature unit: