SmogRank / Hungary / Budapest / Budapest
Budapest, month by month
Budapest has a measured daily mean on 401 days since 30 May 2025. Its worst month was January 2026, at 85 US AQI (27.4 µg/m³), 204th of 2,617 cities on that month's world ranking. Its cleanest was July 2025, at 30 US AQI (5.4 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
6 months
| Month | Why |
|---|---|
| Jul 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 | 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 | 20 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| Sep 2025 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 18 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 2 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.
Budapest's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| January 2026 | 8527.4 µg/m³ | 204thof 2,617 | Europe, January and February 2026 Eastern Europe, January 2026 |
| March 2026 | 6918.5 µg/m³ | 653rdof 2,971 | Europe, 1 to 12 March 2026 |
| February 2026 | 6617.1 µg/m³ | 676thof 2,866 | Europe, January and February 2026 |
| December 2025 | 6617.0 µg/m³ | 644thof 3,006 | Eastern Europe, 16 to 21 December 2025 |
| November 2025 | 6416.1 µg/m³ | 544thof 2,715 | Europe, 8 to 10 November 2025 |
| April 2026 | 488.7 µg/m³ | 1,321stof 2,941 | – |
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.
Budapest's worst days
| Day | US AQI | Episode |
|---|---|---|
| 22 Jan 2026 | 13348.5 µg/m³ | Europe, January and February 2026 |
| 16 Jan 2026 | 13047.1 µg/m³ | Europe, January and February 2026 |
| 23 Jan 2026 | 13047.1 µg/m³ | Europe, January and February 2026 |
| 10 Jan 2026 | 12946.9 µg/m³ | Eastern Europe, January 2026 |
| 15 Jan 2026 | 12645.6 µg/m³ | Europe, January and February 2026 |
| 21 Jan 2026 | 12645.5 µg/m³ | Europe, January and February 2026 |
| 24 Jan 2026 | 12244.0 µg/m³ | Europe, January and February 2026 |
| 19 Dec 2025 | 11440.8 µg/m³ | Eastern Europe, 16 to 21 December 2025 |
| 18 Jan 2026 | 10436.6 µg/m³ | Europe, January and February 2026 |
| 14 Jan 2026 | 10336.2 µg/m³ | Europe, January and February 2026 |
Daily means, the highest since 30 May 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, Budapest, Hungary, 30 May 2025 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/hu/budapest/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.
Budapest now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 21:07 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).