SmogRank / Spain / Madrid / Villarejo de Salvanés
Villarejo de Salvanés, month by month
Villarejo de Salvanés has a measured daily mean on 890 days since 1 January 2023. Its worst month was December 2023, at 61 US AQI (14.5 µg/m³), 299th of 2,247 cities on that month's world ranking. Its cleanest was January 2026, at 12 US AQI (2.1 µg/m³). 2025 averaged 33 US AQI (6.0 µg/m³), against 52 US AQI (9.7 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
18 months
| Month | Why |
|---|---|
| Oct 2026 | 5 of 11 days measured; a month needs 8. The others: 1 with no readings from the monitor, 5 with readings for part of the day (a day needs 18 hours). |
| Jul 2026 | 8 of 31 days measured; a month needs 22. The others: 14 with no readings from the monitor, 9 with readings for part of the day (a day needs 18 hours). |
| Jun 2026 | No day measured. The others: 29 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours). |
| May 2026 | No day measured. The others: 31 with no readings from the monitor. |
| Apr 2026 | No day measured. The others: 30 with no readings from the monitor. |
| Mar 2026 | No day measured. The others: 31 with no readings from the monitor. |
| Feb 2026 | 7 of 28 days measured; a month needs 20. The others: 19 with no readings from the monitor, 1 with readings for part of the day (a day needs 18 hours), 1 with readings left out by our checks. |
| Jun 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 2024 | 15 of 31 days measured; a month needs 22. The others: 16 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 | 7 of 31 days measured; a month needs 22. The others: 2 with no readings from the monitor, 22 with readings for part of the day (a day needs 18 hours). |
| Jul 2024 | 13 of 31 days measured; a month needs 22. The others: 17 with readings for part of the day (a day needs 18 hours), 1 with readings left out by our checks. |
| May 2024 | 2 of 31 days measured; a month needs 22. The others: 15 with no readings from the monitor, 14 with readings for part of the day (a day needs 18 hours). |
| Apr 2024 | 16 of 30 days measured; a month needs 21. The others: 12 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours). |
| Mar 2024 | 14 of 31 days measured; a month needs 22. The others: 10 with no readings from the monitor, 7 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 | 2 of 28 days measured; a month needs 20. The others: 1 with readings for part of the day (a day needs 18 hours), 25 missing from OpenAQ's archive. |
| Jan 2023 | 15 of 31 days measured; a month needs 22. The others: 9 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.
Villarejo de Salvanés's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| December 2023 | 6114.5 µg/m³ | 299thof 2,247 | Spain, France and 2 more countries, December 2023 to January 2024 |
| August 2025 | 5813.1 µg/m³ | 561stof 2,901 | Spain, Portugal and Andorra, August 2025 |
| July 2023 | 5712.4 µg/m³ | 354thof 1,432 | – |
| June 2023 | 5410.7 µg/m³ | 686thof 1,603 | – |
| November 2024 | 529.8 µg/m³ | 890thof 2,624 | – |
| December 2024 | 529.8 µg/m³ | 908thof 2,616 | – |
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.
Villarejo de Salvanés's worst days
| Day | US AQI | Episode |
|---|---|---|
| 7 Apr 2024 | 14453.0 µg/m³ | Spain, April 2024 |
| 19 Mar 2025 | 14051.2 µg/m³ | – |
| 19 Aug 2025 | 13850.6 µg/m³ | Spain, Portugal and Andorra, August 2025 |
| 31 Oct 2024 | 13448.7 µg/m³ | Northern Spain, October 2024 |
| 26 Dec 2023 | 12545.2 µg/m³ | Spain, France and 2 more countries, December 2023 to January 2024 |
| 6 Apr 2024 | 10135.6 µg/m³ | Spain, April 2024 |
| 28 Jun 2023 | 9733.8 µg/m³ | – |
| 10 Apr 2023 | 9231.1 µg/m³ | Madrid, Andalusia and Castille-La Mancha, Spain, April 2023 |
| 25 Dec 2023 | 9030.1 µg/m³ | Spain, France and 2 more countries, December 2023 to January 2024 |
| 25 Nov 2023 | 8829.2 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, Villarejo de Salvanés, Spain, 1 Jan 2023 – 7 Oct 2026. Monitor data from EEA, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/es/villarejo-de-salvanes/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.
Villarejo de Salvanés now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 20:07 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).