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 25 Sep 2023: Coslada 18.3 µg/m³, Cuenca 14.9 µg/m³ and La Línea de la Concepción 12.4 µg/m³.
- 1CosladaMadrid18.3
- 2CuencaCastille-La Mancha14.9
- 3La Línea de la ConcepciónAndalusia12.4
- 4MóstolesMadrid12.1
- 5San RoqueAndalusia10.8
- 6TorreviejaValencia10.4
- 7ValdemoroMadrid10.4
- 8DurangoBasque Country10.0
- 9BilbaoBasque Country10.0
- 10BeasainBasque Country9.9
- 11Collado-VillalbaMadrid9.7
- 12Alcalá de HenaresMadrid9.7
- 13Laudio / LlodioBasque Country9.3
- 14SevillaAndalusia9.2
- 15Gasteiz / VitoriaBasque Country9.1
- 16AzpeitiaBasque Country9.1
- 17MadridMadrid9.0
- 18HuelvaAndalusia8.8
- 19AlfaroLa Rioja8.6
- 20Villarejo de SalvanésMadrid8.5
+ 65 more cities, the next at 8.4 µg/m³
Not counted on this day, too few days measured: Palma since 23 Sep 2023, Valladolid since 19 Sep 2023, Burela de Cabo since 5 Sep 2023 and 6 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 reader for China's network. Turkey's network doesn't answer requests from outside the country, so we can't read it. Most cities there are missing from this board, not clean. Why.