SmogRank / Spain / Catalonia / Salou
Salou, month by month
Salou has a measured daily mean on 552 days since 29 January 2024. Its worst month was January 2025, at 53 US AQI (10.3 µg/m³), 940th of 2,474 cities on that month's world ranking. Its cleanest was September 2025, at 25 US AQI (4.5 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
22 months
| Month | Why |
|---|---|
| Oct 2026 | 3 of 11 days measured; a month needs 8. The others: 1 with no readings from the monitors, 7 with readings for part of the day (a day needs 18 hours). |
| Aug 2026 | 16 of 31 days measured; a month needs 22. The others: 15 with under 18 hours of readings or readings that failed our checks. |
| Jul 2026 | 10 of 31 days measured; a month needs 22. The others: 21 with under 18 hours of readings or readings that failed our checks. |
| Jun 2026 | No day measured. The others: 30 with under 18 hours of readings or readings that failed our checks. |
| May 2026 | No day measured. The others: 31 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 | 7 of 28 days measured; a month needs 20. The others: 21 with under 18 hours of readings or readings that failed our checks. |
| Jan 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. |
| Dec 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. |
| Nov 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. |
| Oct 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 | 14 of 30 days measured; a month needs 21. The others: 16 with under 18 hours of readings or readings that failed our checks. |
| May 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. |
| Feb 2025 | 18 of 28 days measured; a month needs 20. The others: 10 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 | 13 of 31 days measured; a month needs 22. The others: 18 with under 18 hours of readings or readings that failed our checks. |
| Apr 2024 | 20 of 30 days measured; a month needs 21. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Mar 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. |
| 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.
Salou's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| January 2025 | 5310.3 µg/m³ | 940thof 2,474 | – |
| February 2024 | 5310.0 µg/m³ | 661stof 2,486 | Southern Europe, February 2024 |
| August 2025 | 529.9 µg/m³ | 1,254thof 2,901 | – |
| November 2024 | 498.8 µg/m³ | 1,126thof 2,624 | – |
| December 2024 | 478.4 µg/m³ | 1,242ndof 2,616 | – |
| July 2025 | 346.2 µg/m³ | 2,236thof 2,889 | – |
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.
Salou's worst days
| Day | US AQI | Episode |
|---|---|---|
| 15 Jan 2025 | 9934.9 µg/m³ | – |
| 22 Jan 2025 | 9432.1 µg/m³ | – |
| 6 Feb 2024 | 8225.9 µg/m³ | Southern Europe, February 2024 |
| 22 Feb 2024 | 8024.9 µg/m³ | – |
| 19 Dec 2024 | 7722.8 µg/m³ | – |
| 15 Feb 2024 | 7522.1 µg/m³ | – |
| 25 Nov 2024 | 7320.8 µg/m³ | – |
| 17 Feb 2025 | 7220.3 µg/m³ | – |
| 7 Feb 2024 | 7120.1 µg/m³ | Southern Europe, February 2024 |
| 18 Dec 2024 | 7119.8 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, Salou, Spain, 29 Jan 2024 – 7 Oct 2026. Monitor data from Catalonia Medi Ambient I Sostenibilitat and EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/es/salou/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.
Salou 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).