Nitrogen dioxide concentrations in European capital cities - monthly in Helsinki
Helsinki: Nitrogen dioxide concentrations in European capital cities - monthly was 7.6 Micrograms per cubic metre in 2026. ▼ Falling
Nitrogen dioxide concentrations in European capital cities - monthly in Helsinki, 2018–2026
Source: Eurostat. Measured in Micrograms per cubic metre.
Analysis
The most recent figure for nitrogen dioxide concentrations in european capital cities - monthly in Helsinki is 7.6 Micrograms per cubic metre, measured in 2026. That is the lowest value across all 9 years on record.
The figure is down 12.6% on the previous year and down 58.0% over ten years.
Over the whole period, nitrogen dioxide concentrations in european capital cities - monthly in Helsinki peaked at 23.8 Micrograms per cubic metre in 2022 and was at its lowest, 7.6 Micrograms per cubic metre, in 2026.
Helsinki ranks 27th of 30 regions on this measure, in the bottom quarter.
Nitrogen dioxide concentrations in European capital cities - monthly in Helsinki, year by year
| Year | Micrograms per cubic metre | Change |
|---|---|---|
| 2018 | 18.1 Micrograms per cubic metre | — |
| 2019 | 18 Micrograms per cubic metre | -0.6% |
| 2020 | 12.3 Micrograms per cubic metre | -31.7% |
| 2021 | 20.3 Micrograms per cubic metre | +65.0% |
| 2022 | 23.8 Micrograms per cubic metre | +17.2% |
| 2023 | 18.4 Micrograms per cubic metre | -22.7% |
| 2024 | 13.2 Micrograms per cubic metre | -28.3% |
| 2025 | 8.7 Micrograms per cubic metre | -34.1% |
| 2026 | 7.6 Micrograms per cubic metre | -12.6% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2010s | 18.05 Micrograms per cubic metre | 18 Micrograms per cubic metre | 18.1 Micrograms per cubic metre | 2 |
| 2020s | 14.9 Micrograms per cubic metre | 7.6 Micrograms per cubic metre | 23.8 Micrograms per cubic metre | 7 |
More reference data data for Helsinki
- Correction coefficients in the European Union (Duty stations) - index 110.8 Index (2025)
- Purchasing Power Parities in the European Union (Duty stations) 1.11 Index (2025)
Frequently asked questions
- What is nitrogen dioxide concentrations in european capital cities - monthly in Helsinki?
- Nitrogen dioxide concentrations in european capital cities - monthly in Helsinki was 7.6 Micrograms per cubic metre in 2026, according to Eurostat.
- What is the highest nitrogen dioxide concentrations in european capital cities - monthly recorded in Helsinki?
- The highest recorded value was 23.8 Micrograms per cubic metre in 2022.
- What is the lowest nitrogen dioxide concentrations in european capital cities - monthly recorded in Helsinki?
- The lowest recorded value was 7.6 Micrograms per cubic metre in 2026.
- How does Helsinki rank for nitrogen dioxide concentrations in european capital cities - monthly?
- Helsinki ranks 27th out of 30 regions with data for 2026.
- Is nitrogen dioxide concentrations in european capital cities - monthly rising or falling in Helsinki?
- Over the last ten years it is down 58.0%. The long-run trend across the full record is falling.
- Where does this Helsinki data come from?
- The figures come from Eurostat, published as part of Nitrogen dioxide concentrations in European capital cities - monthly averages, experimental statistics. Statizoid updates them automatically from the source API.
Download this data
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