Plume Air Report (a participant of the Apps for Europe contest) is an app for iOS and Android, that offers insight in the actual air quality in 150+ countries worldwide. The app gets its data from the official measuring stations in the countries an is thus relying on open data to function. Amsterdam and Rotterdam are included in the aggregates cities (data is supplied by the Dutch RIVM).
The company aggregates the usual suspects, nitrogen dioxide (NO2), ozone (O3) and particulate matter (PM2.5 and PM10), and then hides all the complexity behind a simple index. But the best part is that you can see how pollution is going to evolve in the next 24 hours in some countries.
Plume Labs also compares its predictions with the actual pollution level so that it can make its algorithm better. As an added benefit, Plume Air Report also features weather forecast for the next 24 hours.
The app is very straightforward. When you open the app, once you have set up your favorite city, you land directly on the main forecasting screen, with the current situation at the top, a chart below and four bottoms to see if it’s safe to run or bike for example.