Plume Labs create personal air quality monitoring hardware by day, and use Mapbox to power their global air quality index and maps by night. Every 15 minutes, Plume Labs records air quality from their distributed air quality sensors. Using Mapbox GL JS for web map rendering and the Mobile Maps SDK for the iOS and Android versions, it seamlessly builds interactive and live, street by street air quality maps.

MTS helps Plume Labs get people from A to B in the healthiest way possible. Using MTS, we're able to update the entire world's air pollution data in real-time so that our users can avoid pollution hotspots while they walk, run, or cycle through their city.
Boris Quennehen, Atmospheric Scientist at Plume Labs

Building with Mapbox, instead of managing a set of mapping servers to create these maps, Plume Labs streams data to Mapbox and gets enterprise-grade tilesets available to all their users within minutes.