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 16 Dec 2025: Faisalabad 338.4 µg/m³, Rahim Yar Khan 307.9 µg/m³ and Noida 307.5 µg/m³.
- 1FaisalabadPakistan338.4
- 2Rahim Yar KhanPakistan307.9
- 3NoidaIndia307.5
- 4BawānaIndia306.1
- 5PeshawarPakistan303.4
- 6MultanPakistan298.6
- 7DādriIndia281.4
- 8NarelaIndia279.0
- 9GujranwalaPakistan278.2
- 10LahorePakistan266.9
- 11DelhiIndia245.8
- 12BahawalpurPakistan244.3
- 13SialkotPakistan229.5
- 14RawalpindiPakistan214.3
- 15GhāziābādIndia210.6
- 16BahadurgarhIndia209.0
- 17MeerutIndia201.0
- 18DhāruheraIndia195.5
- 19MuzaffarnagarIndia190.6
- 20NajafgarhIndia174.5
+ 3,138 more cities, the next at 168.8 µg/m³
Not counted on this day, too few days measured: Loni since 15 Dec 2025, Bāghpat since 15 Dec 2025, Nagapattinam since 14 Dec 2025 and 2 more cities.
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, Turkey and Iran, which publish only on their own websites. We are building the reader for China's network. The networks of Turkey and Iran don't answer requests from outside their countries, so we can't read them. Most cities there are missing from this board, not clean. Why.