Current reason for fine dust values

Does anyone know anything about the reason for current increased values? The map shows a cloud of fine dust over the Netherlands and northwest of Germany. My sensors record increasing values since 8:00 p.m. They are are now over 100ppm (PM2.5).

Does anyone know the reason?

Most likely smog and morning fog. In the Netherlands there is a smog alert since friday until today. See In heel Nederland kans op smog door ozon en fijnstof | RIVM for more information (in Dutch).

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Seems to be the reason. Thank you, Phaze-III !

Iā€™m in Scotland and my readings for 2.5 and 10 have both been around 80 due to Sahara dust.

Gregor

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