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 23 May 2023: Campillos 14.3 µg/m³, La Línea de la Concepción 12.5 µg/m³ and Las Palmas de Gran Canaria 11.9 µg/m³.
- 1CampillosAndalusia14.3
- 2La Línea de la ConcepciónAndalusia12.5
- 3Las Palmas de Gran CanariaCanary Islands11.9
- 4HuelvaAndalusia11.1
- 5San RoqueAndalusia10.6
- 6ArrecifeCanary Islands10.6
- 7Puerto del RosarioCanary Islands10.5
- 8SevillaAndalusia10.3
- 9BailénAndalusia10.2
- 10VigoGalicia9.7
- 11Gasteiz / VitoriaBasque Country9.6
- 12CuencaCastille-La Mancha9.6
- 13ArucasCanary Islands9.5
- 14AlgecirasAndalusia9.4
- 15DurangoBasque Country9.4
- 16CeeGalicia9.4
- 17Collado-VillalbaMadrid9.2
- 18Alcalá de HenaresMadrid9.2
- 19ValenciaValencia9.1
- 20BeasainBasque Country9.0
+ 64 more cities, 8.8 µg/m³ and below
Not counted on this day, too few days measured: San Isidro since 16 May 2023, San Sebastián de la Gomera since 10 May 2023, Lomo de Arico since 10 May 2023 and 10 more cities. Days missing from the source archive fall in this window, so fewer countries are counted.
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.