Air Pollution Levels Exceed Limits in Several Bulgarian Cities - Novinite.com - Sofia News Agency
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The air quality in several Bulgarian cities, including Pernik, Sofia, Plovdiv, Stara Zagora, Veliko Tarnovo, Ruse, Vidin, Dimitrovgrad, and Shumen, has been reported as poor, according to data from the European Air Quality Index. Measurements show that fine particulate matter (PM) concentrations exceed the permissible limit of 50 micrograms per cubic meter.
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