Among air quality sensore there are the ones that are in the sensor community network and are known as Luftdaten AQ sensor or airrohr, that are self builded.
pswWD download data from the nettwork usig a link like this one, that is for my sensor
https://data.sensor.community/airrohr/v1/sensor/45616/
You get an xml file in response
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Latest Cumulus MX V4 release 4.0.1 (build 4023) - 16 May 2024
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Latest Cumulus MX V4 release 4.0.1 (build 4023) - 16 May 2024
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki