SmogRank / Spain / Galicia / Vigo
Vigo, month by month
Vigo has a measured daily mean on 990 days since 1 January 2023. Its worst month was February 2023, at 75 US AQI (22.0 µg/m³), 91st of 1,129 cities on that month's world ranking. Its cleanest was September 2025, at 36 US AQI (6.4 µg/m³). 2025 averaged 49 US AQI (8.8 µg/m³), against 58 US AQI (12.8 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
15 months
| Month | Why |
|---|---|
| Oct 2026 | 6 of 11 days measured; a month needs 8. The others: 1 with no readings from the monitors, 4 with readings for part of the day (a day needs 18 hours). |
| Aug 2026 | 20 of 31 days measured; a month needs 22. The others: 11 with under 18 hours of readings or readings that failed our checks. |
| Jul 2026 | 18 of 31 days measured; a month needs 22. The others: 13 with under 18 hours of readings or readings that failed our checks. |
| Jun 2026 | 10 of 30 days measured; a month needs 21. The others: 20 with under 18 hours of readings or readings that failed our checks. |
| May 2026 | 2 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks. |
| Apr 2026 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| Mar 2026 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Feb 2026 | 8 of 28 days measured; a month needs 20. The others: 20 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 | 15 of 31 days measured; a month needs 22. The others: 16 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 | 7 of 31 days measured; a month needs 22. The others: 24 with under 18 hours of readings or readings that failed our checks. |
| Jul 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. |
| Mar 2024 | 15 of 31 days measured; a month needs 22. The others: 16 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.
Vigo's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| February 2023 | 7522.0 µg/m³ | 91stof 1,129 | Spain, France and Portugal, February 2023 Northern Spain and Portugal, February 2023 |
| December 2024 | 7019.4 µg/m³ | 281stof 2,616 | – |
| February 2024 | 6617.0 µg/m³ | 283rdof 2,486 | Southern Europe, February 2024 Europe, 27 January to 2 February 2024and 1 more |
| January 2024 | 6516.8 µg/m³ | 374thof 2,385 | Europe, 27 January to 2 February 2024 |
| November 2024 | 6516.4 µg/m³ | 356thof 2,624 | – |
| December 2023 | 6315.5 µg/m³ | 269thof 2,247 | – |
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.
Vigo's worst days
| Day | US AQI | Episode |
|---|---|---|
| 5 Jul 2026 | 16170.4 µg/m³ | – |
| 24 Jun 2023 | 11641.7 µg/m³ | – |
| 2 Feb 2024 | 11641.7 µg/m³ | Europe, 27 January to 2 February 2024 Spain, Portugal and France, February 2024 |
| 20 Feb 2023 | 11240.0 µg/m³ | Spain, France and Portugal, February 2023 |
| 21 Feb 2023 | 11039.0 µg/m³ | Spain, France and Portugal, February 2023 |
| 9 Jul 2025 | 10737.8 µg/m³ | – |
| 4 Feb 2023 | 10537.3 µg/m³ | Northern Spain and Portugal, February 2023 |
| 28 Dec 2024 | 10537.1 µg/m³ | – |
| 5 Feb 2024 | 10436.7 µg/m³ | Southern Europe, February 2024 |
| 7 Jul 2024 | 9834.4 µg/m³ | – |
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, Vigo, Spain, 1 Jan 2023 – 9 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/es/vigo/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.
Vigo now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 19:07 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).