Air Quality Lab — Most, Czechia
Air Quality Profile·
Most reports an annual PM2.5 of 12.5 µg/m³. That's roughly double the WHO 2021 guideline but still far below the EU annual limit of 25 µg/m³.
Most
Czechia
CzechiaAnnual Average
FairWHO annual classification
12.5µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
1212 µg/m³ — Fair
9.69.6 µg/m³ — Good
8.68.6 µg/m³ — Good
9.29.2 µg/m³ — Good
1111 µg/m³ — Fair
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
1717 µg/m³ — Moderate
Jan
Feb
Mar
Apr
May
Jun
1414 µg/m³ — Fair
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
1414 µg/m³ — Fair
1212 µg/m³ — Fair
9.69.6 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
8.68.6 µg/m³ — Good
9.29.2 µg/m³ — Good
1111 µg/m³ — Fair
1212 µg/m³ — Fair
1616 µg/m³ — Moderate
1717 µg/m³ — Moderate
Best months: Jun–AugWorst months: Mar, 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 Czechia
Most: 12.5 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