SmogRank / Germany / Lower Saxony / Otterndorf
Otterndorf, month by month
Otterndorf has a measured daily mean on 578 days since 13 December 2024. Its worst month was February 2026, at 66 US AQI (17.4 µg/m³), 665th of 2,866 cities on that month's world ranking. Its cleanest was September 2025, at 26 US AQI (4.7 µg/m³).
Every month since 2024
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Months without a mean, and why
3 months
| Month | Why |
|---|---|
| Jun 2026 | 16 of 30 days measured; a month needs 21. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 20 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Dec 2024 | 18 of 31 days measured; a month needs 22. The others: 1 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Otterndorf's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2026 | 6617.4 µg/m³ | 665thof 2,866 | Europe, January and February 2026 |
| January 2026 | 6617.3 µg/m³ | 612thof 2,617 | Europe, January and February 2026 |
| March 2025 | 6516.7 µg/m³ | 798thof 2,862 | Europe, March 2025 Germany, Poland and 25 more countries, March 2025 |
| February 2025 | 6315.3 µg/m³ | 850thof 2,633 | Europe, 1 to 14 February 2025 |
| March 2026 | 5913.2 µg/m³ | 1,037thof 2,971 | Europe, 18 to 25 March 2026 Europe, 1 to 12 March 2026 |
| December 2025 | 529.4 µg/m³ | 1,490thof 3,006 | – |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Otterndorf's worst days
| Day | US AQI | Episode |
|---|---|---|
| 23 Jan 2026 | 15763.6 µg/m³ | Europe, January and February 2026 |
| 24 Jan 2026 | 13449.1 µg/m³ | Europe, January and February 2026 |
| 25 Jan 2026 | 11741.8 µg/m³ | Europe, January and February 2026 |
| 10 Mar 2025 | 10838.5 µg/m³ | Germany, Poland and 25 more countries, March 2025 |
| 21 Mar 2025 | 9834.3 µg/m³ | Europe, March 2025 |
| 7 Feb 2026 | 9834.3 µg/m³ | Europe, January and February 2026 |
| 31 Jan 2026 | 9734.0 µg/m³ | Europe, January and February 2026 |
| 10 Mar 2026 | 9633.0 µg/m³ | Europe, 1 to 12 March 2026 |
| 4 Feb 2025 | 9532.9 µg/m³ | Europe, 1 to 14 February 2025 |
| 5 Mar 2025 | 9532.8 µg/m³ | Germany, Poland and 25 more countries, March 2025 |
Daily means, the highest since 13 Dec 2024; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Otterndorf, Germany, 13 Dec 2024 – 10 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/de/otterndorf/history (accessed 13 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Otterndorf now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 01:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).