SmogRank / Hungary / Heves County / Gyöngyös
Gyöngyös, month by month
Gyöngyös has a measured daily mean on 659 days since 29 January 2024. Its worst month was February 2025, at 64 US AQI (16.1 µg/m³), 813th of 2,633 cities on that month's world ranking. Its cleanest was September 2026, at 23 US AQI (4.2 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
17 months
| Month | Why |
|---|---|
| Aug 2026 | 17 of 31 days measured; a month needs 22. The others: 14 with under 18 hours of readings or readings that failed our checks. |
| Jun 2026 | 12 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| May 2026 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Nov 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 2025 | 12 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks. |
| Jul 2025 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 12 of 30 days measured; a month needs 21. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Apr 2025 | 10 of 30 days measured; a month needs 21. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| Mar 2025 | 18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Jan 2025 | 18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Oct 2024 | 14 of 31 days measured; a month needs 22. The others: 17 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 | 12 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks. |
| Jun 2024 | 17 of 30 days measured; a month needs 21. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Mar 2024 | 12 of 31 days measured; a month needs 22. The others: 19 with under 18 hours of readings or readings that failed our checks. |
| Jan 2024 | 3 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.
Gyöngyös's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2025 | 6416.1 µg/m³ | 813thof 2,633 | Europe, 14 February to 1 March 2025 Europe, 1 to 14 February 2025 |
| July 2024 | 6014.0 µg/m³ | 225thof 2,566 | – |
| March 2026 | 5813.1 µg/m³ | 1,054thof 2,971 | – |
| November 2024 | 5611.7 µg/m³ | 602ndof 2,624 | Europe, November 2024 |
| February 2026 | 529.5 µg/m³ | 1,532ndof 2,866 | – |
| January 2026 | 519.1 µg/m³ | 1,220thof 2,617 | Eastern Europe, January 2026 |
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.
Gyöngyös's worst days
| Day | US AQI | Episode |
|---|---|---|
| 1 Apr 2024 | 12143.7 µg/m³ | Europe, March and April 2024 |
| 24 Feb 2025 | 9231.2 µg/m³ | Europe, 14 February to 1 March 2025 |
| 16 Jul 2024 | 8828.9 µg/m³ | – |
| 11 Nov 2024 | 8728.6 µg/m³ | Europe, November 2024 |
| 17 Jul 2024 | 8627.8 µg/m³ | – |
| 10 Jan 2026 | 8527.3 µg/m³ | Eastern Europe, January 2026 |
| 7 Feb 2025 | 8427.0 µg/m³ | Europe, 1 to 14 February 2025 |
| 10 Mar 2025 | 8125.0 µg/m³ | Germany, Poland and 25 more countries, March 2025 |
| 5 Mar 2026 | 7923.9 µg/m³ | – |
| 19 Dec 2025 | 7823.6 µg/m³ | – |
Daily means, the highest since 29 Jan 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, Gyöngyös, Hungary, 29 Jan 2024 – 12 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/hu/gyongyos/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.
Gyöngyös now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 04:07 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).