Air Quality
3.4/5
16.0 µg/m³Sensitive Groups
Air Quality Profile
Kyustendil reports an annual PM2.5 of 16.0 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
Kyustendil
Bulgaria
BulgariaAnnual Average
ModerateWHO annual classification
16.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2121 µg/m³ — Moderate
2020 µg/m³ — Moderate
1717 µg/m³ — Moderate
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1111 µg/m³ — Fair
1313 µg/m³ — Fair
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
2020 µg/m³ — Moderate
2121 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2121 µg/m³ — Moderate
2020 µg/m³ — Moderate
1717 µg/m³ — Moderate
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1111 µg/m³ — Fair
Jul
Aug
Sep
Oct
Nov
Dec
1313 µg/m³ — Fair
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
2020 µg/m³ — Moderate
2121 µg/m³ — Moderate
Best months: May–Jun, SepWorst months: Jan, Nov–Dec
Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
Air Quality Profile
Kyustendil reports an annual PM2.5 of 16.0 µg/m³. That's meaningfully above the WHO 2021 guideline of 5 µg/m³ yet within the EU annual limit of 25 µg/m³.
KyustendilBulgaria
BulgariaAnnual Average
ModerateWHO annual classification
16.0µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
2121 µg/m³ — Moderate
2020 µg/m³ — Moderate
1717 µg/m³ — Moderate
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1111 µg/m³ — Fair
1313 µg/m³ — Fair
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
2020 µg/m³ — Moderate
2121 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
2121 µg/m³ — Moderate
2020 µg/m³ — Moderate
1717 µg/m³ — Moderate
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1111 µg/m³ — Fair
Jul
Aug
Sep
Oct
Nov
Dec
1313 µg/m³ — Fair
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
2020 µg/m³ — Moderate
2121 µg/m³ — Moderate
Best months: May–Jun, SepWorst months: Jan, Nov–Dec
Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
Who thrives in Kyustendil
Things to consider in Kyustendil
PM2.5 annual average of 16.0 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 Kyustendil?
Why not Kyustendil? Honestly, air quality could be better — Kyustendil's 16.0 µg/m³ annual PM2.5 is above WHO guidelines, though still within ranges common for larger cities.
Frequently asked about Kyustendil
▶How many sunny days does Kyustendil have per year?
Kyustendil averages approximately 221 sunny days per year, based on historical climate data.
▶What is the air quality in Kyustendil?
Kyustendil has an annual PM2.5 concentration of 16.0 µg/m³, classified as "Moderate" by WHO standards. Above WHO targets. Some respiratory effects possible with prolonged exposure.