Summary
Air quality in Prague is unhealthy (AQI 179), driven by O₃. Everyone should limit prolonged outdoor exertion.
Current Air Quality Index
179
Unhealthy
050100150200300500
Dominant Pollutant: O₃
Health Advice
Everyone may begin to experience health effects. Sensitive groups may experience more serious effects. Limit outdoor activity.
Pollutant Breakdown
Pollutant Concentration Unit
PM10 2.6 µg/m³
NO₂ 26.2 ppb
O₃ (dominant) 96.8 ppb
Event Details
Coords: 50.0875, 14.4214
CZ
Last update: 2 months ago
Updated: 2 months ago
Unhealthy
About the Air Quality Index

The AQI is a dimensionless index from 0 to 500, where lower values indicate better air quality. It is calculated from the six criteria pollutants.

Good (0–50)
Moderate (0–100)
Unhealthy for Sensitive Groups (0–150)
Unhealthy (0–200)
Very Unhealthy (0–300)
Hazardous (0–500)
Data via