Hello Mark
Uradmonitor have been around for a long time and originally started as a kickerstarter Project monitor radiation but has predominently now delivery Air Quality Sensor.
I have been running the A3 model basically uninterrupted since 2016 and their API is very well developed and supported and maintained. They have substantial coverage especially in Europe and growing in the USA since the fires. For your consideration.
https://www.uradmonitor.com
https://www.uradmonitor.com/wordpress/w ... sponse.pdf
https://www.uradmonitor.com/server-upgrade-site-4/
Data is also available through a local API (JSON) [iP_Address/j
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Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4019) - 03 April 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)
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Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4019) - 03 April 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