The source stated that high pollution refers to the content of one or more substances in the atmospheric air that exceeds the maximum permissible concentration by 10 or more times.
Extremely high pollution exceeds the maximum by 20-29 times when this level is maintained for more than two days, by 30-49 times when this level is maintained for eight hours, or by >50 when this level is fixed.
The pollution level >50 is accompanied by visual and organoleptic signs, including the appearance of a persistent smell that is not characteristic of a particular area or season, the fall of tinted rains and other atmospheric precipitation.
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High air pollution cases count in Russia 2005-2024
The number of cases of high and extremely high air pollution in Russia reached *** in 2024, having increased from the previous year. The 2021 figure was the highest over the period under consideration.
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Finexpertiza. (June 9, 2025). Number of cases of high and extremely high air pollution in Russia from 2005 to 2024 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 30, 2026, from /statistics/1185964/number-of-high-air-pollution-cases-russia/
Finexpertiza. "Number of cases of high and extremely high air pollution in Russia from 2005 to 2024." Chart. June 9, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 30, 2026. /statistics/1185964/number-of-high-air-pollution-cases-russia/
Finexpertiza. (2025). Number of cases of high and extremely high air pollution in Russia from 2005 to 2024. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 30, 2026. /statistics/1185964/number-of-high-air-pollution-cases-russia/
Finexpertiza. "Number of Cases of High and Extremely High Air Pollution in Russia from 2005 to 2024." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Jun 2025, /statistics/1185964/number-of-high-air-pollution-cases-russia/
Finexpertiza, Number of cases of high and extremely high air pollution in Russia from 2005 to 2024 ÌÇÐÄÆƽâ°æ, /statistics/1185964/number-of-high-air-pollution-cases-russia/ (last visited July 30, 2026)
Number of cases of high and extremely high air pollution in Russia from 2005 to 2024 [Graph], Finexpertiza, June 9, 2025. [Online]. Available: /statistics/1185964/number-of-high-air-pollution-cases-russia/
