SmogRank / World / Europe / Spain / Madrid

Most polluted cities in Madrid, Spain

8 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Madrid at 9.3 µg/m³, #738 in the world.

26 monitors in Spain stopped reporting on 6 Oct, 05:00 Madrid time. Cities that rely on them are missing from the 24-hour board and may drop from the longer ones; that isn't clean air, and they return when the data does.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

Madrid: 8 measured citiesCastille-La Mancha: 1 measured cityCastille and León: 1 measured cityExtremadura#8 Collado-Villalba: 2.8 µg/m³#7 Algete: 4.5 µg/m³#6 Villarejo de Salvanés: 6.5 µg/m³#5 Villa del Prado: 7.0 µg/m³#4 Alcalá de Henares: 7.5 µg/m³#3 Coslada: 7.9 µg/m³#2 Torrejón de Ardoz: 9.1 µg/m³#1 Madrid: 9.3 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Madrid 0% 0.75%0
Every measured city in Madrid, Spain, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.
  1. 1Madridlast full day 1 Oct 0%
  2. 2Torrejón de Ardoz 0%
  3. 3Coslada 0%
  4. 4Alcalá de Henares 0%
  5. 5Villa del Pradolast full day 1 Oct 0%
  6. 6Villarejo de Salvanés 0%
  7. 7Algete 0%
  8. 8Collado-Villalba 0%
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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

Estimated: cities without a monitor

Madrid cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Ciudad Lineal≈ 8 µg/m³Good
Leganés≈ 8 µg/m³Good
Getafe≈ 8 µg/m³Good
Alcorcón≈ 7 µg/m³Good
Chamartín≈ 8 µg/m³Good
Alcobendas≈ 8 µg/m³Good
Parla≈ 8 µg/m³Good
Las Rozas de Madrid≈ 7 µg/m³Good
Pozuelo de Alarcón≈ 7 µg/m³Good
San Sebastián de los Reyes≈ 8 µg/m³Good
Rivas-Vaciamadrid≈ 8 µg/m³Good
Majadahonda≈ 7 µg/m³Good
Aranjuez≈ 6 µg/m³Good
Boadilla del Monte≈ 7 µg/m³Good
Arganda≈ 8 µg/m³Good
Colmenar Viejo≈ 7 µg/m³Good
Pinto≈ 8 µg/m³Good
Tres Cantos≈ 7 µg/m³Good
San Fernando de Henares≈ 8 µg/m³Good
Galapagar≈ 7 µg/m³Good
Arroyomolinos≈ 7 µg/m³Good
Villaviciosa de Odón≈ 7 µg/m³Good
Mejorada del Campo≈ 8 µg/m³Good
Ciempozuelos≈ 6 µg/m³Good
Torrelodones≈ 7 µg/m³Good
Navalcarnero≈ 7 µg/m³Good
El Goloso≈ 8 µg/m³Good
San Martín de la Vega≈ 8 µg/m³Good
Humanes de Madrid≈ 7 µg/m³Good
San Lorenzo de El Escorial≈ 7 µg/m³Good
Villanueva de la Cañada≈ 7 µg/m³Good
El Escorial≈ 7 µg/m³Good
Villanueva del Pardillo≈ 7 µg/m³Good

Bad-air episodes in Madrid

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

Use this board

SmogRank, most polluted cities in Madrid, Spain, PM2.5, last 30 days to 6 Oct 2026, 23:00 UTC, smogrank.com/es/region/madrid?w=30d.

Download top 10 (PNG)

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.

Updated 2026-10-06 23:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.