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 21 Aug 2023: Cuenca 14.7 µg/m³, La Línea de la Concepción 14.4 µg/m³ and Alcalá de Henares 14.3 µg/m³.
- 1CuencaCastille-La Mancha14.7
- 2La Línea de la ConcepciónAndalusia14.4
- 3Alcalá de HenaresMadrid14.3
- 4Santa Cruz de TenerifeCanary Islands14.1
- 5HuelvaAndalusia13.7
- 6Granadilla de AbonaCanary Islands13.2
- 7San RoqueAndalusia12.7
- 8ArrecifeCanary Islands12.3
- 9Las Palmas de Gran CanariaCanary Islands11.5
- 10Lomo de AricoCanary Islands11.1
- 11GranadaAndalusia10.0
- 12Villarejo de SalvanésMadrid9.7
- 13ToledoCastille-La Mancha9.6
- 14PalenciaCastille and León9.5
- 15MadridMadrid9.5
- 16VilamarxantValencia9.1
- 17Ribarroja del TuriaValencia9.1
- 18CandelariaCanary Islands9.0
- 19Laudio / LlodioBasque Country8.7
- 20Gasteiz / VitoriaBasque Country8.6
+ 46 more cities, 8.5 µg/m³ and below
Not counted on this day, too few days measured: Sevilla since 21 Aug 2023, Santa Cruz de la Palma since 21 Aug 2023, San Fernando since 21 Aug 2023 and 25 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.