SmogRank / France / Grand Est / Forbach
Forbach, month by month
Forbach has a measured daily mean on 948 days since 11 January 2023. Its worst month was February 2025, at 68 US AQI (18.1 µg/m³), 713th of 2,852 cities on that month's world ranking. Its cleanest was September 2025, at 21 US AQI (3.8 µg/m³). 2025 averaged 45 US AQI (8.1 µg/m³), against 42 US AQI (7.6 µg/m³) in 2023.
Every month since 2023
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
11 months
| Month | Why |
|---|---|
| Dec 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Nov 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Oct 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Sep 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Aug 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jul 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2024 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Apr 2024 | 2 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Mar 2024 | 10 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks. |
| Jan 2023 | 6 of 31 days measured; a month needs 22. The others: 3 missing from OpenAQ's archive, 12 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.
Forbach's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2025 | 6818.1 µg/m³ | 713thof 2,852 | – |
| February 2023 | 6214.9 µg/m³ | 350thof 1,129 | Europe, 28 February to 4 March 2023 Europe, 6 to 25 February 2023 |
| January 2025 | 6013.9 µg/m³ | 656thof 2,754 | – |
| January 2024 | 5813.0 µg/m³ | 600thof 2,385 | Europe, 8 to 27 January 2024 |
| January 2026 | 5712.1 µg/m³ | 1,102ndof 2,978 | Europe, January and February 2026 |
| March 2025 | 5511.5 µg/m³ | 1,465thof 3,102 | – |
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.
Forbach's worst days
| Day | US AQI | Episode |
|---|---|---|
| 16 Aug 2026 | 17691.2 µg/m³ | – |
| 15 Aug 2026 | 12946.7 µg/m³ | – |
| 25 Jan 2026 | 11440.9 µg/m³ | Europe, January and February 2026 |
| 10 Feb 2023 | 11139.7 µg/m³ | Europe, 6 to 25 February 2023 |
| 15 Jan 2025 | 10738.0 µg/m³ | – |
| 10 Feb 2025 | 10537.1 µg/m³ | – |
| 3 Mar 2023 | 10035.2 µg/m³ | Europe, 28 February to 4 March 2023 |
| 20 Jan 2025 | 9733.9 µg/m³ | – |
| 4 Feb 2025 | 9733.6 µg/m³ | – |
| 17 Dec 2023 | 9633.3 µg/m³ | France, Spain and Germany, December 2023 |
Daily means, the highest since 11 Jan 2023; 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, Forbach, France, 11 Jan 2023 – 12 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/fr/forbach/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.
Forbach now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 19:07 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).