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 Oct 2023: San Roque 15.1 µg/m³, La Orotava 14.6 µg/m³ and Las Palmas de Gran Canaria 14.5 µg/m³.
- 1San RoqueAndalusia15.1
- 2La OrotavaCanary Islands14.6
- 3Las Palmas de Gran CanariaCanary Islands14.5
- 4Santa Cruz de TenerifeCanary Islands14.4
- 5La Línea de la ConcepciónAndalusia14.3
- 6CosladaMadrid13.8
- 7VigoGalicia13.2
- 8MurciaMurcia12.9
- 9ValdemoroMadrid12.9
- 10CuencaCastille-La Mancha12.8
- 11MóstolesMadrid12.4
- 12SevillaAndalusia12.2
- 13ArrecifeCanary Islands12.2
- 14CandelariaCanary Islands12.1
- 15Alcalá de HenaresMadrid12.1
- 16Collado-VillalbaMadrid10.8
- 17BilbaoBasque Country10.5
- 18CórdobaAndalusia10.4
- 19Laudio / LlodioBasque Country10.4
- 20DurangoBasque Country10.4
+ 51 more cities, the next at 10.1 µg/m³
Not counted on this day, too few days measured: Lomo de Arico since 24 Oct 2023, Huelva since 24 Oct 2023, Santa Cruz de la Palma since 23 Oct 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.