Legacy Cumulus 1 release v1.9.4 (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
If you are interested in supporting Cumulus then maybe you would like to contribute to the maintenance of the Wiki? This need not take hours of your time - just a half hour here and there can make a big difference, particularly if many people are doing this. Any contributions are very welcome, whether they involve new content or editing of existing content. It will be very helpful to current and future users of Cumulus software if the Wiki is kept well-maintained and current. If you are interested then please contact forum user saratogaWX and ask for a Wiki account.
It appears they shut off the old queries like [nobbc]http://www.purpleair.com/json?show=4299[/nobbc] and now redirect to a server that won't respond to the query.
Please contact us if you have any questions or need any help getting going on our new API, at https://api.purpleair.com .
Sigh.. I've sent an email to request a READ key, and will rework my scripts to use it instead. Meanwhile, the realtime query script(s) are very broken.. no data available.
For weather software developers that support realtime queries, they'll have to obtain keys and rewrite that portion of their software.
Grumble.
I've reworked the purpleair-inc.php script to use the new API. Seems to be working on my page now.
They were fairly fast in providing an API key, but stunningly, the process was via email... The FAQ on their site needs to be changed now that the old method is turned off.
It may be easier for folks to just use the widget from them instead...
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I found I had to add a second <br/> on line 395 (purpleair-inc.php) otherwise the $Description and $Message were on the same line or at least overlapping.