City in Trøndelag, Norway
Air quality in Trondheim
5PM2.5 µg/m³, yearly
Meets the WHO guideline
The annual average PM2.5 in Trondheim was 5 µg/m³ in 2021, about 1.0 times the WHO guideline of 5 µg/m³.
Key facts
- PM2.5: 5 µg/m³ yearly average (2021). Measured at Trondheim.
- PM10: 11 µg/m³ (2021).
- Nitrogen dioxide: 19 µg/m³ (2021), mostly from traffic.
- Recent average: 5 µg/m³ over the last five years of measurements.
PM2.5 by year
| Year | Annual average |
|---|---|
| 2021 | |
| 2020 | |
| 2019 | |
| 2018 | |
| 2017 | |
| 2016 | |
| 2015 |
Air quality across Norway
Quick answers
Is the air in Trondheim bad?
Meets the WHO guideline: 5 µg/m³ of PM2.5 on average, 1.0× the WHO guideline.
How does Trondheim compare with the rest of Norway?
People in Norway breathe 6 µg/m³ of PM2.5 on average (2023, World Bank/WHO), against 5 µg/m³ measured here.
More about Trondheim
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Sources
- WHO Ambient Air Quality Database
- WHO air quality guidelines (2021)
- Live air quality map (WAQI)
- AtB (Trøndelag public transport)
- Visit Trondheim
- St. Olavs Hospital
Annual averages are measured values reported to the WHO; check a live map for today's air. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.