Are the air quality data correct

[zhoulei_061]

Location: Shengsi island, China(Near Shanghai city)
Time: 7:30 GMT(UTC+0), August 2 2024

It looks like the air quality data is incredibly high in this area, is the data correct? Or there is a bug?

[idefix37]

@zhoulei_061
These air quality maps are based on Copernicus data
https://atmosphere.copernicus.eu/charts/packages/cams/
They concern the total height of the atmosphere and they are not considered at ground level. In Windy air quality at ground level is provided by Air quality stations (see POIs)
These high concentrations of pollutants at high levels could be due to an industrial plant (I don’t think there is an active volcano there).