SmogRank / History / City race
Cities, 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 for PM2.5 over the 7 days to 13 Oct 2024: Baghdad 123.0 µg/m³, Lahore 95.9 µg/m³ and Kinshasa 88.8 µg/m³.
- 1BaghdadIraq123.0
- 2LahorePakistan95.9
- 3KinshasaDemocratic Republic of the Congo88.8
- 4KampalaUganda86.6
- 5HanoiVietnam78.0
- 6PeshawarPakistan77.3
- 7Santa MaríaPeru69.2
- 8DhakaBangladesh69.0
- 9DelhiIndia58.6
- 10BeijingChina56.4
- 11KarachiPakistan52.3
- 12SheridanUnited States46.9
- 13Şabāḩ as SālimKuwait46.8
- 14JakartaIndonesia46.6
- 15Tha BoThailand43.8
- 16VientianeLaos43.8
- 17CairoEgypt42.6
- 18Puerto VarasChile40.5
- 19AshgabatTurkmenistan40.3
- 20MumbaiIndia39.8
+ 1,984 more cities, 39.7 µg/m³ and below
Not counted on this day, too few days measured: Kigali since 29 Sep 2024 and Iloilo since 25 Sep 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 readers for them. Most cities there are missing from this board, not clean. Why.