SmogRank / Slovakia / Banská Bystrica Region / Revúca
Revúca, month by month
Revúca has a measured daily mean on 1,023 days since 1 January 2023. Its worst month was February 2025, at 117 US AQI (42.1 µg/m³), 79th of 2,633 cities on that month's world ranking. Its cleanest was July 2026, at 33 US AQI (6.0 µg/m³). 2025 averaged 69 US AQI (18.9 µg/m³), against 67 US AQI (17.8 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
14 months
| Month | Why |
|---|---|
| Mar 2026 | 19 of 31 days measured; a month needs 22. The others: 10 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours). |
| Feb 2026 | No day measured. The others: 28 with no readings from the monitor. |
| Jan 2026 | No day measured. The others: 30 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours). |
| Nov 2025 | 20 of 30 days measured; a month needs 21. The others: 10 with readings for part of the day (a day needs 18 hours). |
| Oct 2025 | 20 of 31 days measured; a month needs 22. The others: 11 with readings for part of the day (a day needs 18 hours). |
| Dec 2024 | 21 of 31 days measured; a month needs 22. The others: 10 with readings for part of the day (a day needs 18 hours). |
| Oct 2024 | 12 of 31 days measured; a month needs 22. The others: 19 with readings for part of the day (a day needs 18 hours). |
| Sep 2024 | No day measured. The others: 30 with readings for part of the day (a day needs 18 hours). |
| Aug 2024 | 15 of 31 days measured; a month needs 22. The others: 4 with no readings from the monitor, 12 with readings for part of the day (a day needs 18 hours). |
| Apr 2024 | 19 of 30 days measured; a month needs 21. The others: 11 with readings for part of the day (a day needs 18 hours). |
| Mar 2024 | 12 of 31 days measured; a month needs 22. The others: 11 with no readings from the monitor, 8 with readings for part of the day (a day needs 18 hours). |
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 3 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive. |
| Jan 2023 | 21 of 31 days measured; a month needs 22. The others: 3 with readings for part of the day (a day needs 18 hours), 7 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Revúca's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2025 | 11742.1 µg/m³ | 79thof 2,633 | Europe, 14 February to 1 March 2025 |
| January 2024 | 11741.9 µg/m³ | 59thof 2,385 | Europe, 8 to 27 January 2024 |
| January 2025 | 11541.2 µg/m³ | 53rdof 2,474 | Eastern Europe, January 2025 |
| December 2023 | 11239.9 µg/m³ | 39thof 2,247 | – |
| November 2024 | 10637.6 µg/m³ | 46thof 2,624 | Eastern Europe, 25 to 29 November 2024 Europe, November 2024and 1 more |
| February 2024 | 9030.1 µg/m³ | 106thof 2,486 | Europe, February and March 2024 |
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.
Revúca's worst days
| Day | US AQI | Episode |
|---|---|---|
| 27 Nov 2024 | 17184.4 µg/m³ | Eastern Europe, 25 to 29 November 2024 |
| 26 Nov 2024 | 16980.7 µg/m³ | Eastern Europe, 25 to 29 November 2024 |
| 7 Jan 2025 | 16778.9 µg/m³ | Eastern Europe, January 2025 |
| 24 Feb 2025 | 16676.7 µg/m³ | Europe, 14 February to 1 March 2025 |
| 12 Jan 2024 | 16271.9 µg/m³ | Europe, 8 to 27 January 2024 |
| 9 Jan 2025 | 16271.1 µg/m³ | Eastern Europe, January 2025 |
| 23 Jan 2024 | 16169.7 µg/m³ | Europe, 8 to 27 January 2024 |
| 28 Dec 2024 | 15966.8 µg/m³ | – |
| 27 Jan 2025 | 15865.5 µg/m³ | – |
| 11 Jan 2024 | 15764.3 µg/m³ | Europe, 8 to 27 January 2024 |
Daily means, the highest since 1 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, Revúca, Slovakia, 1 Jan 2023 – 11 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/sk/revuca/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.
Revúca now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 18:07 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).