Winter PM2.5 by Monitoring Station in Ulaanbaatar (December 2025 to February 2026)
Mean PM2.5 (µg/m³) from December 2025 to February 2026 at the 17 Ulaanbaatar monitoring stations with 60 or more valid days. Bayankhoshuu-6 had the highest winter mean at 132.6, followed by Dambadarjaa-5 (108.0) and Khailaast (99.9); Misheel Expo had the lowest at 20.5. Implausible readings (163 of 16,115 station-days) were removed before averaging.
Mean PM2.5 (µg/m³) from December 2025 to February 2026 at the 17 Ulaanbaatar monitoring stations with 60 or more valid days. Bayankhoshuu-6 had the highest winter mean at 132.6, followed by Dambadarjaa-5 (108.0) and Khailaast (99.9); Misheel Expo had the lowest at 20.5. Implausible readings (163 of 16,115 station-days) were removed before averaging.