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 20 Oct 2023: San Roque 14.6 µg/m³, Huelva 14.4 µg/m³ and Lomo de Arico 14.1 µg/m³.
- 1San RoqueAndalusia14.6
- 2HuelvaAndalusia14.4
- 3Lomo de AricoCanary Islands14.1
- 4La Línea de la ConcepciónAndalusia13.8
- 5Granadilla de AbonaCanary Islands13.8
- 6San Sebastián de la GomeraCanary Islands13.7
- 7Las Palmas de Gran CanariaCanary Islands13.7
- 8Santa Cruz de TenerifeCanary Islands13.4
- 9La OrotavaCanary Islands13.3
- 10CuencaCastille-La Mancha13.0
- 11ValdemoroMadrid12.9
- 12San IsidroCanary Islands12.7
- 13VigoGalicia12.5
- 14MóstolesMadrid12.5
- 15Alcalá de HenaresMadrid12.1
- 16SevillaAndalusia11.8
- 17ArrecifeCanary Islands11.7
- 18CosladaMadrid11.6
- 19Santa Cruz de la PalmaCanary Islands11.2
- 20CandelariaCanary Islands11.0
+ 61 more cities, 10.9 µg/m³ and below
Not counted on this day, too few days measured: Beasain since 5 Oct 2023, Palma since 1 Oct 2023, Arucas since 29 Sep 2023 and 4 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 readers for them. Most cities there are missing from this board, not clean. Why.