SmogRank / Hungary / Borsod-Abaúj-Zemplén / Miskolc
Miskolc, month by month
Miskolc has a measured daily mean on 935 days since 31 March 2023. Its worst month was February 2025, at 128 US AQI (46.4 µg/m³), 56th of 2,633 cities on that month's world ranking. Its cleanest was July 2026, at 52 US AQI (9.6 µg/m³).
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
14 months
| Month | Why |
|---|---|
| Oct 2026 | No day measured. The others: 12 with no readings from the monitor. |
| Sep 2026 | 19 of 30 days measured; a month needs 21. The others: 8 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours), 1 with under 18 hours of readings or readings that failed our checks. |
| Sep 2025 | 2 of 30 days measured; a month needs 21. The others: 28 with under 18 hours of readings or readings that failed our checks. |
| Aug 2025 | 2 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks. |
| Jul 2025 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 3 of 30 days measured; a month needs 21. The others: 27 with under 18 hours of readings or readings that failed our checks. |
| Apr 2025 | 16 of 30 days measured; a month needs 21. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| Oct 2023 | 18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Aug 2023 | 9 of 31 days measured; a month needs 22. The others: 22 with under 18 hours of readings or readings that failed our checks. |
| Jul 2023 | No day measured. The others: 1 missing from OpenAQ's archive, 30 with under 18 hours of readings or readings that failed our checks. |
| Jun 2023 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2023 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Apr 2023 | 5 of 30 days measured; a month needs 21. The others: 3 missing from OpenAQ's archive, 22 with under 18 hours of readings or readings that failed our checks. |
| Mar 2023 | 1 of 31 days measured; a month needs 22. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Miskolc's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2025 | 12846.4 µg/m³ | 56thof 2,633 | Europe, 14 February to 1 March 2025 Europe, 1 to 14 February 2025 |
| January 2026 | 12143.5 µg/m³ | 68thof 2,617 | Europe, January and February 2026 Eastern Europe, January 2026 |
| November 2024 | 9934.8 µg/m³ | 54thof 2,624 | Eastern Europe, 30 November to 8 December 2024 Eastern Europe, 25 to 29 November 2024and 2 more |
| January 2024 | 9532.8 µg/m³ | 101stof 2,385 | Europe, 8 to 27 January 2024 |
| January 2025 | 9030.0 µg/m³ | 93rdof 2,474 | – |
| December 2025 | 8828.9 µg/m³ | 321stof 3,006 | Eastern Europe, 16 to 21 December 2025 Eastern Europe, 3 to 7 December 2025 |
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.
Miskolc's worst days
| Day | US AQI | Episode |
|---|---|---|
| 11 Jan 2024 | 196119.0 µg/m³ | Europe, 8 to 27 January 2024 |
| 21 Jan 2026 | 188108.0 µg/m³ | Europe, January and February 2026 |
| 22 Jan 2026 | 17082.9 µg/m³ | Europe, January and February 2026 |
| 11 Feb 2025 | 16880.4 µg/m³ | Europe, 1 to 14 February 2025 |
| 20 Jan 2026 | 16473.6 µg/m³ | Europe, January and February 2026 |
| 4 Sept 2024 | 16372.9 µg/m³ | Poland, Hungary and Serbia, September 2024 |
| 28 Nov 2024 | 16271.8 µg/m³ | Eastern Europe, 25 to 29 November 2024 |
| 26 Feb 2025 | 16271.2 µg/m³ | Europe, 14 February to 1 March 2025 |
| 27 Nov 2024 | 16069.0 µg/m³ | Eastern Europe, 25 to 29 November 2024 |
| 19 Jan 2026 | 16069.0 µg/m³ | Europe, January and February 2026 |
Daily means, the highest since 31 Mar 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, Miskolc, Hungary, 31 Mar 2023 – 21 Sep 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/hu/miskolc/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.
Miskolc now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 22:07 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).