Air Quality Lab — Bratislava, Slovakia
Air Quality Profile
Bratislava reports an annual PM2.5 of 12.7 µg/m³. That's roughly double the WHO 2021 guideline but still far below the EU annual limit of 25 µg/m³.
Bratislava
Slovakia
SlovakiaAnnual Average
FairWHO annual classification
12.7µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1616 µg/m³ — Moderate
1212 µg/m³ — Fair
1414 µg/m³ — Fair
1313 µg/m³ — Fair
1111 µg/m³ — Fair
1010 µg/m³ — Good
9.89.8 µg/m³ — Good
1010 µg/m³ — Fair
1010 µg/m³ — Fair
1212 µg/m³ — Fair
1717 µg/m³ — Moderate
1717 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
1616 µg/m³ — Moderate
1212 µg/m³ — Fair
1414 µg/m³ — Fair
1313 µg/m³ — Fair
1111 µg/m³ — Fair
1010 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
9.89.8 µg/m³ — Good
1010 µg/m³ — Fair
1010 µg/m³ — Fair
1212 µg/m³ — Fair
1717 µg/m³ — Moderate
1717 µg/m³ — Moderate
Best months: Jun–Jul, SepWorst months: Jan, Nov–Dec
Good5–10 µg/m³Fair10–15 µg/m³Moderate15–25 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Slovakia
Bratislava: 12.7 µg/m³. Typical range in Slovakia: 12.1–13.1 µg/m³. Low anchor: Stupava, 10.0 µg/m³. High anchor: Košice, 14.7 µg/m³.
54 cities tracked