The majority of Russian cities, or 39 percent, had an atmospheric pollution index (API) of 7 to 13 points. In total, the share of cities exposed to high and very high air pollution, which were assigned an API level above seven points or less, was measured at 68 percent.
Distribution of cities in Russia in 2022, by atmospheric pollution index
(API)
The atmospheric pollution index (API), used in Central Asian countries, was introduced in the USSR in 1991. It calculates "for the five substances found in the highest
concentrations in relation to their degree of hazardousness. Air pollution is deemed to be very
high, if the aggregate API exceeds 14; high, if 14 > API >7; relatively high, if 7 > API > 5;
low, if API is < 5."
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Ministry of Natural Resources and Environment of the Russian Federation. (December 6, 2023). Distribution of cities in Russia in 2022, by atmospheric pollution index (API) [Graph]. In Statista. Retrieved February 11, 2025, from https://www.statista.com/statistics/1049317/russia-share-of-cities-by-air-pollution-level/?__sso_cookie_checker=failed
Ministry of Natural Resources and Environment of the Russian Federation. "Distribution of cities in Russia in 2022, by atmospheric pollution index (API)." Chart. December 6, 2023. Statista. Accessed February 11, 2025. https://www.statista.com/statistics/1049317/russia-share-of-cities-by-air-pollution-level/?__sso_cookie_checker=failed
Ministry of Natural Resources and Environment of the Russian Federation. (2023). Distribution of cities in Russia in 2022, by atmospheric pollution index (API). Statista. Statista Inc.. Accessed: February 11, 2025. https://www.statista.com/statistics/1049317/russia-share-of-cities-by-air-pollution-level/?__sso_cookie_checker=failed
Ministry of Natural Resources and Environment of the Russian Federation. "Distribution of Cities in Russia in 2022, by Atmospheric Pollution Index (Api)." Statista, Statista Inc., 6 Dec 2023, https://www.statista.com/statistics/1049317/russia-share-of-cities-by-air-pollution-level/?__sso_cookie_checker=failed
Ministry of Natural Resources and Environment of the Russian Federation, Distribution of cities in Russia in 2022, by atmospheric pollution index (API) Statista, https://www.statista.com/statistics/1049317/russia-share-of-cities-by-air-pollution-level/?__sso_cookie_checker=failed (last visited February 11, 2025)
Distribution of cities in Russia in 2022, by atmospheric pollution index (API) [Graph], Ministry of Natural Resources and Environment of the Russian Federation, December 6, 2023. [Online]. Available: https://www.statista.com/statistics/1049317/russia-share-of-cities-by-air-pollution-level/?__sso_cookie_checker=failed