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 17 Feb 2024: Ourense 28.2 µg/m³, Manlleu 26.4 µg/m³ and San Sebastián de la Gomera 24.1 µg/m³.
- 1OurenseGalicia28.2
- 2ManlleuCatalonia26.4
- 3San Sebastián de la GomeraCanary Islands24.1
- 4Mollet del VallèsCatalonia24.0
- 5Santa Cruz de TenerifeCanary Islands22.6
- 6MaspalomasCanary Islands22.2
- 7LleidaCatalonia22.2
- 8San IsidroCanary Islands20.9
- 9VigoGalicia20.8
- 10Granadilla de AbonaCanary Islands20.7
- 11Las Palmas de Gran CanariaCanary Islands20.6
- 12Santa Cruz de la PalmaCanary Islands20.0
- 13BailénAndalusia19.8
- 14La OrotavaCanary Islands19.5
- 15MurciaMurcia18.7
- 16CandelariaCanary Islands18.1
- 17BarcelonaCatalonia17.5
- 18Lomo de AricoCanary Islands17.0
- 19OviedoAsturias16.3
- 20LeónCastille and León16.1
+ 86 more cities, 16.1 µg/m³ and below
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 readers for them. Most cities there are missing from this board, not clean. Why.