Semi-coke fuel drives up to 54% drop in Ulaanbaatar air pollution www.gogo.mn
The Scientific Council under the National Committee for Air Pollution Reduction recently convened to evaluate the environmental impact of semi-coke fuel usage among capital residents during the 2025–2026 winter heating season.
During the session, D.Onurbat, a senior air quality specialist at the Meteorological and Environmental Monitoring Department, revealed that key atmospheric pollutants dropped by up to 54% compared to the previous year's winter season.
Official metrics indicate significant reductions across all major monitored pollutants: Sulfur dioxide (SO2): Decreased by 36 µg/m³ (54% reduction). Particulate matter (PM10): Decreased by 23 µg/m³ (21% reduction). Fine particulate matter (PM2.5): Decreased by 9 µg/m³ (17% reduction). Nitrogen dioxide (NO2): Decreased by 2 µg/m³ (4% reduction).
Throughout the 2025–2026 heating season, 436.7 thousand tons of solid fuel were supplied to ger district households across 425 localized distribution points. Semi-coke fuel comprised the vast majority of this supply, totaling 333.3 thousand tons.
Published Date:2026-05-24





