Air quality
CSENCurrent air-quality index (EAQI), pollutants and outlook for Czech cities.
The European Air Quality Index (0–100+) combines PM2.5, PM10, ozone, NO₂ and SO₂ into one value. Lower is better.
Fine particulate matter up to 2.5 and 10 µm. Smaller particles reach deeper into the lungs and carry more risk.
The CAMS model via Open-Meteo (~11 km grid), not measuring stations — treat it as indicative.