SmogRank / History / City race
Cities in Malta, 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 Malta for PM2.5 over the 30 days to 13 Jun 2025: Valletta 11.2 µg/m³, San Pawl il-Baħar 9.7 µg/m³ and Għarb 6.1 µg/m³.
- 1VallettaValletta11.2
- 2San Pawl il-BaħarSaint Paul’s Bay9.7
- 3GħarbL-Għarb6.1
Not counted on this day, too few days measured: Żabbar since 9 Jun 2025 and Mosta since 21 May 2025.
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.