How it is studied
A model represents emissions, transport and deposition on a grid. PollenTotal displays CAMS forecasts through Open-Meteo; it is not a sensor at the searched address. Check the variable and data time before comparing charts.
An example to interpret it
Example: two nearby places may use the same grid cell of roughly 11 km and show similar values. This reflects model resolution; it does not prove that every neighbourhood has exactly the same concentration.
What to check
The displayed daily maximum is the highest available hourly value for that day, not its mean. Missing hours limit that maximum to the hours received. Evaluating a model requires comparable observations.