Air Quality Lab — Ponta Delgada, Portugal
Air Quality Profile
Ponta Delgada reports an annual PM2.5 of 5.2 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Ponta Delgada
Portugal
PortugalAnnual Average
GoodWHO annual classification
5.2µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
6.66.6 µg/m³ — Good
5.95.9 µg/m³ — Good
5.75.7 µg/m³ — Good
6.16.1 µg/m³ — Good
5.85.8 µg/m³ — Good
5.45.4 µg/m³ — Good
4.04.0 µg/m³ — Excellent
5.05.0 µg/m³ — Excellent
4.64.6 µg/m³ — Excellent
4.24.2 µg/m³ — Excellent
4.74.7 µg/m³ — Excellent
4.84.8 µg/m³ — Excellent
Jan
Feb
Mar
Apr
May
Jun
6.66.6 µg/m³ — Good
5.95.9 µg/m³ — Good
5.75.7 µg/m³ — Good
6.16.1 µg/m³ — Good
5.85.8 µg/m³ — Good
5.45.4 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
4.04.0 µg/m³ — Excellent
5.05.0 µg/m³ — Excellent
4.64.6 µg/m³ — Excellent
4.24.2 µg/m³ — Excellent
4.74.7 µg/m³ — Excellent
4.84.8 µg/m³ — Excellent
Best months: Jul, Sep–OctWorst months: Jan–Feb, Apr
Excellent0–5 µg/m³Good5–10 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Portugal
Ponta Delgada: 5.2 µg/m³. Typical range in Portugal: 7.4–9.1 µg/m³. High anchor: Porto, 10.6 µg/m³.
85 cities tracked