Sofia
Summary
Air quality in Sofia is hazardous (AQI 500), driven by CO. Health alert: everyone should avoid all outdoor activity.
Current Air Quality Index
500
Hazardous
050100150200300500
Dominant Pollutant:
CO
Health Advice
Health warning of emergency conditions. The entire population is likely to be affected. Stay indoors and keep windows closed.
Pollutant Breakdown
| Pollutant | Concentration | Unit |
|---|---|---|
| PM10 | 3.7 | µg/m³ |
| NO₂ | 7.8 | ppb |
| O₃ | 108.8 | ppb |
| CO (dominant) | 660.0 | ppm |
| SO₂ | 2.1 | ppb |
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Event Details
Coords: 42.7000,
23.3300
BG
Last update:
8 minutes ago
Updated:
2 hours ago
Hazardous
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)