SmogRank / Bulgaria / Varna / Varna
Varna, month by month
Varna has a measured daily mean on 643 days since 7 June 2024. Its worst month was November 2024, at 64 US AQI (16.1 µg/m³), 369th of 2,624 cities on that month's world ranking. Its cleanest was September 2026, at 38 US AQI (6.9 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
8 months
| Month | Why |
|---|---|
| Jan 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. |
| Oct 2025 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Jun 2025 | 19 of 30 days measured; a month needs 21. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| May 2025 | 19 of 31 days measured; a month needs 22. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Jan 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. |
| Oct 2024 | 11 of 31 days measured; a month needs 22. The others: 20 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 | 8 of 31 days measured; a month needs 22. The others: 23 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.
Varna's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| November 2024 | 6416.1 µg/m³ | 369thof 2,624 | Eastern Europe, 25 to 29 November 2024 Southern Europe, November 2024and 1 more |
| March 2025 | 6416.1 µg/m³ | 849thof 2,862 | Germany, Poland and 25 more countries, March 2025 |
| December 2025 | 6114.3 µg/m³ | 774thof 3,006 | Eastern Europe, 16 to 21 December 2025 |
| December 2024 | 5813.1 µg/m³ | 589thof 2,616 | Europe, 24 December 2024 to 3 January 2025 Serbia, Slovenia and 10 more countries, December 2024 |
| July 2024 | 5813.0 µg/m³ | 306thof 2,566 | – |
| February 2025 | 5612.0 µg/m³ | 1,018thof 2,633 | – |
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.
Varna's worst days
| Day | US AQI | Episode |
|---|---|---|
| 9 Mar 2025 | 11541.1 µg/m³ | Germany, Poland and 25 more countries, March 2025 |
| 24 Jan 2025 | 11039.0 µg/m³ | Germany, France and 19 more countries, January 2025 |
| 19 Nov 2024 | 10737.8 µg/m³ | Southern Europe, November 2024 |
| 23 Jan 2025 | 10537.3 µg/m³ | Germany, France and 19 more countries, January 2025 |
| 20 Jan 2025 | 9934.8 µg/m³ | Germany, France and 19 more countries, January 2025 |
| 19 Dec 2024 | 9834.3 µg/m³ | Serbia, Slovenia and 10 more countries, December 2024 |
| 1 Nov 2024 | 9834.2 µg/m³ | Eastern Europe, October and November 2024 |
| 16 Nov 2025 | 9834.2 µg/m³ | Southern Europe, November 2025 |
| 20 Dec 2025 | 9633.3 µg/m³ | Eastern Europe, 16 to 21 December 2025 |
| 31 Dec 2024 | 9633.1 µg/m³ | Europe, 24 December 2024 to 3 January 2025 |
Daily means, the highest since 7 Jun 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, Varna, Bulgaria, 7 Jun 2024 – 9 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/bg/varna/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.
Varna 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).