SmogRank / Germany / Thuringia / Bad Frankenhausen
Bad Frankenhausen, month by month
Bad Frankenhausen has a measured daily mean on 501 days since 5 February 2025. Its worst month was January 2026, at 81 US AQI (25.4 µg/m³), 236th of 2,617 cities on that month's world ranking. Its cleanest was October 2025, at 24 US AQI (4.4 µg/m³).
Every month since 2025
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
4 months
| Month | Why |
|---|---|
| Jun 2026 | 16 of 30 days measured; a month needs 21. The others: 7 with no readings from the monitor, 7 with readings for part of the day (a day needs 18 hours). |
| Jun 2025 | 16 of 30 days measured; a month needs 21. The others: 14 with readings for part of the day (a day needs 18 hours). |
| Mar 2025 | 17 of 31 days measured; a month needs 22. The others: 14 with readings for part of the day (a day needs 18 hours). |
| Feb 2025 | 19 of 28 days measured; a month needs 20. The others: 5 with readings for part of the day (a day needs 18 hours). |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Bad Frankenhausen's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| January 2026 | 8125.4 µg/m³ | 236thof 2,617 | Europe, January and February 2026 Europe, December 2025 to January 2026 |
| February 2026 | 6918.9 µg/m³ | 600thof 2,866 | Europe, January and February 2026 |
| March 2026 | 6114.2 µg/m³ | 920thof 2,971 | Europe, 18 to 25 March 2026 Europe, 1 to 12 March 2026 |
| December 2025 | 5712.3 µg/m³ | 930thof 3,006 | Europe, December 2025 to January 2026 |
| November 2025 | 5410.5 µg/m³ | 939thof 2,715 | Europe, 8 to 10 November 2025 |
| April 2025 | 519.3 µg/m³ | 1,386thof 2,951 | – |
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.
Bad Frankenhausen's worst days
| Day | US AQI | Episode |
|---|---|---|
| 25 Jan 2026 | 16271.7 µg/m³ | Europe, January and February 2026 |
| 24 Jan 2026 | 16270.6 µg/m³ | Europe, January and February 2026 |
| 13 Feb 2025 | 15459.4 µg/m³ | Europe, 1 to 14 February 2025 |
| 10 Feb 2025 | 14854.6 µg/m³ | Europe, 1 to 14 February 2025 |
| 30 Jan 2026 | 14854.5 µg/m³ | Europe, January and February 2026 |
| 23 Jan 2026 | 13850.7 µg/m³ | Europe, January and February 2026 |
| 11 Mar 2025 | 13449.1 µg/m³ | Germany, Poland and 25 more countries, March 2025 |
| 4 Feb 2026 | 13147.5 µg/m³ | Europe, January and February 2026 |
| 11 Feb 2025 | 12746.0 µg/m³ | Europe, 1 to 14 February 2025 |
| 6 Feb 2026 | 12745.9 µg/m³ | Europe, January and February 2026 |
Daily means, the highest since 5 Feb 2025; 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, Bad Frankenhausen, Germany, 5 Feb 2025 – 10 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/de/bad-frankenhausen/history (accessed 12 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.
Bad Frankenhausen now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 20:07 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).