Air Quality Lab — Hyesan, North Korea
Air Quality Profile·
Hyesan reports an annual PM2.5 of 19.7 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Hyesan
North Korea
North KoreaAnnual Average
ModerateWHO annual classification
19.7µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2828 µg/m³ — Poor
2525 µg/m³ — Moderate
2323 µg/m³ — Moderate
2323 µg/m³ — Moderate
1717 µg/m³ — Moderate
1515 µg/m³ — Fair
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1515 µg/m³ — Fair
1818 µg/m³ — Moderate
2222 µg/m³ — Moderate
2626 µg/m³ — Poor
Jan
Feb
Mar
Apr
May
Jun
2828 µg/m³ — Poor
2525 µg/m³ — Moderate
2323 µg/m³ — Moderate
2323 µg/m³ — Moderate
1717 µg/m³ — Moderate
1515 µg/m³ — Fair
Jul
Aug
Sep
Oct
Nov
Dec
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1515 µg/m³ — Fair
1818 µg/m³ — Moderate
2222 µg/m³ — Moderate
2626 µg/m³ — Poor
Best months: Jul–SepWorst months: Jan–Feb, Dec
Fair10–15 µg/m³Moderate15–25 µg/m³Poor25–35 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across North Korea
Hyesan: 19.7 µg/m³. Typical range in North Korea: 18.3–23.2 µg/m³. Low anchor: Changam-ch’on, 16.0 µg/m³. High anchor: Man’gyŏngdae-ri, 30.1 µg/m³.
90 cities tracked