SmogRank / Gujranwala / Saint-Louis
Gujranwala vs Saint-Louis: PM2.5 compared
Over the last year, Gujranwala's air was about 3.4× as polluted as Saint-Louis's: PM2.5 averaged 51.2 µg/m³ against 15.1, on the 189 days both cities were measured. Gujranwala had the dirtier air on 181 of those days, Saint-Louis on 8. Gujranwala was over the WHO's daily guideline of 15 µg/m³ on 189 of them, Saint-Louis on 43.
Right now
The last year, day by day
Month by month
Each city's worst days
Gujranwala
- 21 Sept 2026213138.0 µg/m³
- 22 Sept 2026193115.0 µg/m³
- 27 Sept 2026188108.0 µg/m³
Saint-Louis
- 21 Sept 2026469309.7 µg/m³
- 17 Sept 2026314231.9 µg/m³
- 1 Oct 2026226151.2 µg/m³
Daily means in US AQI, with µg/m³ beside them, since the index stops at its top value, over the days both cities were measured in the last year. Each date opens that day's world board.
Compare either city with another
Gujranwala
Side by side with Sialkot (the nearest), Peshawar (Pakistan's 2nd worst on 30 days), Kinshasa (the world's 2nd worst on 30 days).
Saint-Louis
Side by side with Thiès (the nearest), Ziguinchor (Senegal's worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Gujranwala and Saint-Louis, 9 Oct 2025 – 8 Oct 2026, smogrank.com/compare/pk-gujranwala/sn-saint-louis (accessed 9 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.
Updated 2026-10-09 12:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); Love My Air (City and County of Denver), no reuse terms published (why we use them).