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 Jan 2023: Cartagena 13.5 µg/m³, Arucas 12.8 µg/m³ and Santa Cruz de Tenerife 12.5 µg/m³.
- 1CartagenaMurcia13.5
- 2ArucasCanary Islands12.8
- 3Santa Cruz de TenerifeCanary Islands12.5
- 4VigoGalicia11.6
- 5Las Palmas de Gran CanariaCanary Islands11.5
- 6Ciudad RealCastille-La Mancha9.5
- 7MadridMadrid9.0
- 8OurenseGalicia8.3
- 9LugoGalicia8.1
- 10ToledoCastille-La Mancha7.9
- 11La OrotavaCanary Islands7.9
- 12Santa Cruz de la PalmaCanary Islands7.3
- 13Puerto del RosarioCanary Islands7.2
- 14FerrolGalicia5.4
- 15NarónGalicia5.3
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.