This is healthy air with less PM10.
(5 microgram PM10)

This is unhealthy air with a lot of PM10.
(40 microgram PM10)

This is the PM10 value of Muenster in average in 2016
(15 microgram PM10).

The PM10 value of the next LANUV station is displayed as a darker point in the slider on the right. The lighter point represents the PM10 value for the closest point on the route to your location at the chosen time.
The arrow shows the direction of the route. Following it, you can find guide areas. Clicking on the distance to the next data point Google Maps will start guiding you.

To choose between different dates or to see this introduction again click on the question mark in the top-left corner.