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 18 Dec 2024: Santa María 60.1 µg/m³, Jacobo Hunter 28.4 µg/m³ and Horacio Zeballos Gamez 28.4 µg/m³.
- 1Santa MaríaLima region60.1
- 2Jacobo HunterArequipa28.4
- 3Horacio Zeballos GamezArequipa28.4
- 4LimaLima Province26.0
- 5ChocopeLa Libertad20.7
- 6San Francisco De BorjaLima region20.1
- 7Santa Anita - Los FicusLima region19.9
- 8Villa Poeta José Gálvez BarrenecheaLima region19.4
- 9CallaoCallao15.8
- 10AscopeLa Libertad15.0
- 11ChimboteAncash14.3
- 12YauriCuzco Department9.4
- 13La HuacaPiura9.0
- 14TinyahuarcoPasco5.8
- 15YanacanchaPasco5.8
Not counted on this day, too few days measured: Tupac Amaru since 22 Nov 2024 and San Clemente since 22 Nov 2024.
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.