Current air data i
Please note: current data represent preliminary values which are subject to change due to quality assurance. Back dated values are successively replaced by quality assured values.
* Pursuant to § 20 or § 21 of Directive 2008/50/EC, exceedances of the PM₁₀ daily mean limit value due to natural sources or gritted sand or salt may be deducted by winter road clearance services.
* Passive collectors with monthly mean values cannot record hour overruns due to time resolution.
* AOT40: Accumulated Ozone Exposure over a threshold of 40 ppb. It is the accumulated excess of hourly ozone concentrations above 80 μg/m³ (between 8:00 and 20:00 CET in the growth season).