We have a web service available for our customers to collect their data from the central database, you will have to write a simple script on your end. 
This is a very easy to use web service which takes some parameters as input and returns the data in JSON format.
https://www.airqweb.co.uk/dataCollectorService/index.php?userName=UserName&password=Password&instrumentID=TNO1234&dateFrom=2014-01-01 00:00:00&dateTo=2014-01-01 23:53:00
Input parameters: userName, password, instrumentID, dateFrom, dateTo.
You simply have to hit this web-service URL with the AirQWeb login details , instrument ID and the dates they want the data for. 
This is the sample URL to see the data from our test account. (If you want to show them)
https://www.airqweb.co.uk/dataCollectorService/index.php?userName=test&password=MyTestPassword&instrumentID=T1000&dateFrom=2014-01-01%2000:00:00&dateTo=2014-01-01%2023:53:00
Following is the sample Java code (should be straight forward in other languages as well)
try
{
  String userID= "userID";
  String password= "password";
  String instrumentID= "TNO1234";
  String from= "2014-01-01 00:00:00";
  String to= "2014-01-01 23:53:00";
  String urlStr = "https://www.airqweb.co.uk/dataCollectorService/index.php?userName="+userID+"&password="+password+"&instrumentID="+instrumentID+"&dateFrom="+from+"&dateTo="+to+"";
  URL url = new URL(urlStr);
  URLConnection conn = url.openConnection();
  BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
  //Handle the data however you want 
  System.out.println(in.readLine());
       
  }catch (MalformedURLException e){
       e.printStackTrace();
  }catch (IOException e){
       e.printStackTrace();
  }
}
