How We Forecast Pollen at Planetary Scale

Most pollen apps show you a single number: "high." That's not very useful if you're allergic to birch but not oak. We built Atmospore to forecast pollen at the species level, globally, updated daily. Here's how it works. Why 25 km resolution is the right call Our model runs at roughly 25 km between grid points. That might sound coarse compared to a street-level air quality sensor. But pollen doesn't work like car exhaust. Airborne pollen concentrations are governed by mesoscale weather: wind fie