SmogRank / History / City race
Cities in Peru, 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 Peru for PM2.5 over the 30 days to 15 Nov 2024: Santa María 59.1 µg/m³, Lima 27.5 µg/m³ and Jacobo Hunter 23.7 µg/m³.
- 1Santa MaríaLima region59.1
- 2LimaLima Province27.5
- 3Jacobo HunterArequipa23.7
- 4Horacio Zeballos GamezArequipa23.7
- 5Santa Anita - Los FicusLima region19.7
- 6Villa Poeta José Gálvez BarrenecheaLima region19.6
- 7San Francisco De BorjaLima region18.6
- 8Tupac AmaruIca17.5
- 9San ClementeIca17.5
- 10ChocopeLa Libertad17.1
- 11AscopeLa Libertad15.2
- 12ChimboteAncash13.9
- 13CallaoCallao13.9
- 14YauriCuzco Department13.2
- 15TinyahuarcoPasco9.5
- 16YanacanchaPasco9.2
- 17La HuacaPiura8.7
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.