Air Quality Lab — Porvoo, Finland
Air Quality Profile·
Porvoo reports an annual PM2.5 of 5.5 µg/m³. That's close to the WHO 2021 annual guideline (5 µg/m³) and well inside historically healthy ranges.
Porvoo
Finland
FinlandAnnual Average
GoodWHO annual classification
5.5µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
4.94.9 µg/m³ — Excellent
5.75.7 µg/m³ — Good
5.85.8 µg/m³ — Good
5.85.8 µg/m³ — Good
6.36.3 µg/m³ — Good
5.95.9 µg/m³ — Good
5.55.5 µg/m³ — Good
6.66.6 µg/m³ — Good
5.55.5 µg/m³ — Good
4.74.7 µg/m³ — Excellent
4.34.3 µg/m³ — Excellent
5.55.5 µg/m³ — Good
Jan
Feb
Mar
Apr
May
Jun
4.94.9 µg/m³ — Excellent
5.75.7 µg/m³ — Good
5.85.8 µg/m³ — Good
5.85.8 µg/m³ — Good
6.36.3 µg/m³ — Good
5.95.9 µg/m³ — Good
Jul
Aug
Sep
Oct
Nov
Dec
5.55.5 µg/m³ — Good
6.66.6 µg/m³ — Good
5.55.5 µg/m³ — Good
4.74.7 µg/m³ — Excellent
4.34.3 µg/m³ — Excellent
5.55.5 µg/m³ — Good
Best months: Jan, Oct–NovWorst months: May–Jun, Aug
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 Finland
Porvoo: 5.5 µg/m³. Typical range in Finland: 4.4–5.4 µg/m³. Low anchor: Kuusamo, 3.1 µg/m³. High anchor: Helsinki, 6.6 µg/m³.
70 cities tracked