Project URL: https://timelee.glitch.me/
A fun little project about not very fun things: Timelee is a clean and fast web-app for displaying and collecting relevant (real-time and local) data for epidemiological, climate, and other events.
The web-app is a single-page-app, powered by socket-io. New datapoints from other visitors appear in real-time. Of course, crowdsourcing is not very effective without a crowd, so if you think this could be useful, please feel free to share.