SmogRank / History / City race
Cities in Spain, worst air first, day by day
Each measured city's average over the 30 days to every day since January 2023, worst first. Find your own city to follow it through the race, or keep to one country.
The worst cities in Spain for PM2.5 over the 30 days to 20 Sep 2023: Coslada 19.9 µg/m³, Cuenca 15.4 µg/m³ and Móstoles 13.9 µg/m³.
- 1CosladaMadrid19.9
- 2CuencaCastille-La Mancha15.4
- 3MóstolesMadrid13.9
- 4La Línea de la ConcepciónAndalusia13.7
- 5La OrotavaCanary Islands13.0
- 6San RoqueAndalusia11.9
- 7ValdemoroMadrid11.8
- 8TorreviejaValencia11.7
- 9DurangoBasque Country11.2
- 10BilbaoBasque Country11.1
- 11SevillaAndalusia11.0
- 12Collado-VillalbaMadrid10.9
- 13Alcalá de HenaresMadrid10.7
- 14Gasteiz / VitoriaBasque Country10.6
- 15Laudio / LlodioBasque Country10.4
- 16AzpeitiaBasque Country10.3
- 17MadridMadrid9.9
- 18AlfaroLa Rioja9.8
- 19Villarejo de SalvanésMadrid9.6
- 20ZallaBasque Country9.6
+ 55 more cities, 9.4 µg/m³ and below
Not counted on this day, too few days measured: Valladolid since 19 Sep 2023, Bermeo since 10 Sep 2023, Burela de Cabo since 5 Sep 2023 and 12 more cities.
Cities counted each day
A city's number is its average over the 30 days, shown only when 21 of them were measured (5 of 7 on the 7-day race), the same minimum as the 30- and 7-day boards. A city whose monitors go quiet fades out where it stood rather than sliding down, so a gap never reads as cleaner air. Some large countries are thin or missing because their monitors' licences don't allow reuse. How we rank.
Not covered: the government monitoring networks of China and Turkey, which publish only on their own websites; we are building the readers for them. Most cities there are missing from this board, not clean. Why.