BULGARIAN ACADEMY OF SCIENCE

National Institute of Meteorology and Hydrology

National Institute of Geophysics, Geodesy and Geography

 

POLLUTANTS

 
72-hours forecast:
CO
NO2
SO2
PM10
AQI
 
OZONE
72-hours forecast
First day
Daily maxima
8-hour daily maxima
Second day
Daily maxima
8-hour daily maxima
Third day
Daily maxima
8-hour daily maxima
 
 
Description of Bulgarian Chemical Weather Forecast and Information System (ver. 3.0)(PDF)
Bulgarian legislation for Ozone (O3):
Daily maximum (8-hour running average) threshold (D8T): 120 μg/m3
Permitted number of exceedings of D8T in a year: 25 (mean for 3 years)
Information threshold (hourly value): 180 μg/m3
Alert threshold (hourly value): 240 μg/m3