Air Quality
3.0/5
19.7 µg/m³Sensitive Groups
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: ●●●
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.
HyesanNorth 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: ●●●
Who thrives in Hyesan
Things to consider in Hyesan
PM2.5 annual average of 19.7 µg/m³ exceeds the WHO interim target of 15 µg/m³. The WHO guideline value is 5 µg/m³.
Data sources: WHO (air quality), OECD (safety).
Why not Hyesan?
Why not Hyesan? Honestly, air quality could be better — Hyesan's 19.7 µg/m³ annual PM2.5 is above WHO guidelines, though still within ranges common for larger cities.
Frequently asked about Hyesan
▶How many sunny days does Hyesan have per year?
Hyesan averages approximately 209 sunny days per year, based on historical climate data.
▶What is the air quality in Hyesan?
Hyesan has an annual PM2.5 concentration of 19.7 µg/m³, classified as "Moderate" by WHO standards. Above WHO targets. Some respiratory effects possible with prolonged exposure.