Code yellow has been declared in 13 districts countrywide due to high summer temperatures, the National Institute for Metrology and Hydrology (NIMH) with the Bulgarian Academy of Science (BAS) told FOCUS News Agency .

The code is valid for the following districts: Vidin, Montana, Vratsa, Pleven, Lovech, Veliko Tarnovo, Ruse, Kyustendil, Blagoevgrad, Pazardzhik, Plovdiv, Stara Zagora and Haskovo.