Air Quality Lab — Brno, Czechia
Air Quality Profile
Brno reports an annual PM2.5 of 12.1 µg/m³. That's roughly double the WHO 2021 guideline but still far below the EU annual limit of 25 µg/m³.
Brno
Czechia
CzechiaAnnual Average
FairWHO annual classification
12.1µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1616 µg/m³ — Moderate
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
1212 µg/m³ — Fair
7.47.4 µg/m³ — Good
8.78.7 µg/m³ — Good
8.78.7 µg/m³ — Good
9.89.8 µg/m³ — Good
1010 µg/m³ — Fair
1111 µg/m³ — Fair
1616 µg/m³ — Moderate
1717 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
1616 µg/m³ — Moderate
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
1212 µg/m³ — Fair
7.47.4 µg/m³ — Good
8.78.7 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
8.78.7 µg/m³ — Good
9.89.8 µg/m³ — Good
1010 µg/m³ — Fair
1111 µg/m³ — Fair
1616 µg/m³ — Moderate
1717 µg/m³ — Moderate
Best months: May–JulWorst months: Jan, Mar, 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 Czechia
Brno: 12.1 µg/m³. Typical range in Czechia: 10.9–13.2 µg/m³. Low anchor: Cheb, 8.3 µg/m³. High anchor: Karviná, 18.0 µg/m³.
90 cities tracked