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 29 Mar 2023: Gijón 14.4 µg/m³, Bailén 14.3 µg/m³ and Hernani 13.5 µg/m³.
- 1GijónAsturias14.4
- 2BailénAndalusia14.3
- 3HernaniBasque Country13.5
- 4AmorebietaBasque Country13.1
- 5VigoGalicia13.0
- 6OviedoAsturias12.9
- 7OriaBasque Country12.8
- 8ValenciaValencia12.3
- 9DurangoBasque Country11.9
- 10SamaAsturias11.6
- 11BilbaoBasque Country10.8
- 12TorreviejaValencia10.6
- 13CuencaCastille-La Mancha10.5
- 14San IsidroCanary Islands10.2
- 15Laudio / LlodioBasque Country10.2
- 16GetxoBasque Country10.1
- 17CalahorraLa Rioja10.1
- 18La Línea de la ConcepciónAndalusia9.9
- 19LugoGalicia9.9
- 20Donostia / San SebastiánBasque Country9.8
+ 63 more cities, the next at 9.7 µg/m³
Not counted on this day, too few days measured: Melilla since 28 Mar 2023, Cártama since 26 Mar 2023, Ribarroja del Turia since 16 Mar 2023 and 2 more cities. 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.