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 Aug 2023: La Línea de la Concepción 14.7 µg/m³, Huelva 14.6 µg/m³ and Cuenca 14.5 µg/m³.
- 1La Línea de la ConcepciónAndalusia14.7
- 2HuelvaAndalusia14.6
- 3CuencaCastille-La Mancha14.5
- 4Alcalá de HenaresMadrid14.3
- 5Santa Cruz de TenerifeCanary Islands14.2
- 6MóstolesMadrid13.8
- 7Granadilla de AbonaCanary Islands13.5
- 8La OrotavaCanary Islands13.0
- 9San RoqueAndalusia12.9
- 10ArrecifeCanary Islands12.6
- 11SevillaAndalusia12.1
- 12Las Palmas de Gran CanariaCanary Islands11.5
- 13Lomo de AricoCanary Islands11.4
- 14GranadaAndalusia10.0
- 15ArucasCanary Islands10.0
- 16PalenciaCastille and León10.0
- 17CandelariaCanary Islands9.6
- 18Villarejo de SalvanésMadrid9.6
- 19MadridMadrid9.6
- 20ToledoCastille-La Mancha9.5
+ 51 more cities, 9.4 µg/m³ and below
Not counted on this day, too few days measured: Maspalomas since 23 Aug 2023, Azpeitia since 22 Aug 2023, Córdoba since 20 Aug 2023 and 20 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.