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 Nitrogen Dioxide (NO2):
Hourly threshold value (HT): 200 μg/m3
Permitted number of exceedings of HT in a year: 18
Yearly threshold value (YT): 40 μg/m3
Permitted number of exceedings of YT: impermissible
Alert threshold (hourly value): 400 μg/m3