Air Quality Lab — Tromsø, Norway
Air Quality Profile
Tromsø reports an annual PM2.5 of 3.4 µg/m³. That's below the WHO 2021 annual guideline of 5 µg/m³ — cleaner than most cities on the continent.
Tromsø
Norway
NorwayAnnual Average
ExcellentWHO annual classification
3.4µg/m³
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
PM2.5
3.73.7 µg/m³ — Excellent
4.34.3 µg/m³ — Excellent
3.43.4 µg/m³ — Excellent
3.13.1 µg/m³ — Excellent
3.33.3 µg/m³ — Excellent
3.93.9 µg/m³ — Excellent
3.23.2 µg/m³ — Excellent
3.43.4 µg/m³ — Excellent
2.82.8 µg/m³ — Excellent
3.33.3 µg/m³ — Excellent
3.03.0 µg/m³ — Excellent
3.83.8 µg/m³ — Excellent
Jan
Feb
Mar
Apr
May
Jun
3.73.7 µg/m³ — Excellent
4.34.3 µg/m³ — Excellent
3.43.4 µg/m³ — Excellent
3.13.1 µg/m³ — Excellent
3.33.3 µg/m³ — Excellent
3.93.9 µg/m³ — Excellent
Jul
Aug
Sep
Oct
Nov
Dec
3.23.2 µg/m³ — Excellent
3.43.4 µg/m³ — Excellent
2.82.8 µg/m³ — Excellent
3.33.3 µg/m³ — Excellent
3.03.0 µg/m³ — Excellent
3.83.8 µg/m³ — Excellent
Best months: Apr, Sep, NovWorst months: Feb, Jun, Dec
Excellent0–5 µg/m³
Based on WUSTL PM2.5 dataset (2020–2024) · WHO 2021 thresholds
Confidence: ●●●
How air quality compares
Compared across Norway
Tromsø: 3.4 µg/m³. Typical range in Norway: 4.3–5.8 µg/m³. Low anchor: Alta, 0.0 µg/m³. High anchor: Oslo, 6.5 µg/m³.
34 cities tracked