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 22 Feb 2024: Ourense 27.8 µg/m³, San Sebastián de la Gomera 27.5 µg/m³ and Manlleu 25.8 µg/m³.
- 1OurenseGalicia27.8
- 2San Sebastián de la GomeraCanary Islands27.5
- 3ManlleuCatalonia25.8
- 4MaspalomasCanary Islands24.9
- 5Santa Cruz de TenerifeCanary Islands24.0
- 6Mollet del VallèsCatalonia23.9
- 7Granadilla de AbonaCanary Islands23.0
- 8LleidaCatalonia22.5
- 9La OrotavaCanary Islands22.4
- 10San IsidroCanary Islands22.2
- 11Las Palmas de Gran CanariaCanary Islands22.0
- 12VigoGalicia21.5
- 13Santa Cruz de la PalmaCanary Islands21.4
- 14CandelariaCanary Islands19.9
- 15AgüimesCanary Islands19.9
- 16VecindarioCanary Islands19.6
- 17MurciaMurcia19.4
- 18BailénAndalusia19.3
- 19Lomo de AricoCanary Islands19.0
- 20PuertollanoCastille-La Mancha18.7
+ 108 more cities, the next at 18.1 µg/m³
Not counted on this day, too few days measured: Córdoba since 9 Jan 2024. 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 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.