Air Quality Lab — Baião, Portugal
Air Quality Profile·
Baião reports an annual PM2.5 of 6.9 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Baião
Portugal
PortugalAnnual Average
GoodWHO annual classification
6.9µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
9.49.4 µg/m³ — Good
7.57.5 µg/m³ — Good
7.27.2 µg/m³ — Good
6.96.9 µg/m³ — Good
6.36.3 µg/m³ — Good
6.86.8 µg/m³ — Good
7.27.2 µg/m³ — Good
6.56.5 µg/m³ — Good
5.15.1 µg/m³ — Good
6.56.5 µg/m³ — Good
6.76.7 µg/m³ — Good
7.47.4 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
9.49.4 µg/m³ — Good
7.57.5 µg/m³ — Good
7.27.2 µg/m³ — Good
6.96.9 µg/m³ — Good
6.36.3 µg/m³ — Good
6.86.8 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
7.27.2 µg/m³ — Good
6.56.5 µg/m³ — Good
5.15.1 µg/m³ — Good
6.56.5 µg/m³ — Good
6.76.7 µg/m³ — Good
7.47.4 µg/m³ — Good
Best months: May, Aug–SepWorst months: Jan–Feb, Dec
Good5–10 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Portugal
Baião: 6.9 µg/m³. Typical range in Portugal: 7.4–9.1 µg/m³. Low anchor: Ponta Delgada, 5.2 µg/m³. High anchor: Porto, 10.6 µg/m³.
85 cities tracked