I raise up this thread as I check my station on IQAir.
PM10 seems consistent between IQAir and the Airgradient dashboard but the PM2.5 is wrong
for example :
On dashboard
On IQAir
PM10 seems OK
Is there some correction from IQAir? the value on IQAir is double than the value on the airgradient dashboard
Edit : I choose the corrected EPA formula (the lowest one) value and IQAir take the raw value.
Btw wich one is good? the EPA formula or the raw value?
Edit 2 : Corrected EPA formula is consistent with nearby national organisation stations
β @Achim_AirGradient, could you ask IQAir to take the corrected formula EPA if the user ask for?