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gaigekerr Sep 04, 2019 07:14 PM
Hi all,
I've been looking at the relationship between wildfires and PM2.5 (among other species) in Europe, and I've been accessing hourly observations (E1a historic data) from
One the link above I can only access data from 2013 onwards. Were hourly data not archived before this? If they were archived, where can I find this data?
Replies (3)
EEA Sep 05, 2019 08:44 AM
Dear Gaige Kerr,

Thank you for contacting the European Environment Agency (EEA).

You can access air quality raw data (hourly/daily) before 2013 at the following link:[…]/AirQualityExportAirBase.htm .

We hope that this may be useful for you.

With kind regards,
EEA Enquiry Service
gaigekerr Sep 14, 2019 11:25 PM
Thank you! I tried to download some data, and it seemed like it was only available at a daily frequency. Is hourly data not available pre-2013? (i.e., look at 2010 data for the Netherlands at, for example, station "NL_6001_39328_2010_airbase_timeseries.csv")
EEA Sep 17, 2019 08:33 AM
Dear Gaige Kerr,

The averaging time (hourly/daily) of the PM2.5 measurements is based on the type of sampling process/reference method.

The chemical composition of a collected dust sample can be determined using different methods such as real-time measurements using automatic instruments, total digestion of samples collected on filter substrates and x-ray diffraction and particle-induced x-ray emission.

Therefore, some Member States use lab gravimetric analysis (daily basis) of PM2.5 air quality filter or light scattering automatic analysis (hourly basis).

In your example, the Netherlands is using gravimetric analysis in 2010 to analyse PM2.5 at sampling points, so they used averaging time as daily.

We hope that this information maybe be useful for you.

With kind regards,
EEA Enquiry Service