SmogRank / Chesterfield / Kasur
Chesterfield vs Kasur: PM2.5 compared
Over the last year, Kasur's PM2.5 was about 16.5× Chesterfield's: it averaged 72.7 µg/m³ against 4.4, on the 35 days both cities were measured. Kasur had the dirtier air on 35 of those days, Chesterfield on 0. Kasur was over the WHO's daily guideline of 15 µg/m³ on 35 of them, Chesterfield on 0.
Right now
The last year, day by day
Month by month
Each city's worst days
Chesterfield
- 26 Aug 20265712.3 µg/m³
- 23 Aug 20265611.9 µg/m³
- 6 Oct 2026366.4 µg/m³
Kasur
- 23 Sept 2026207131.5 µg/m³
- 2 Oct 2026197120.5 µg/m³
- 22 Sept 2026191112.0 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
Chesterfield
Side by side with Dronfield (the nearest), Basildon (United Kingdom's worst on 30 days).
Kasur
Side by side with Lahore (the nearest), Gujranwala (Pakistan's 2nd worst on 30 days), Kuala Lumpur (the world's 3rd worst on 30 days).
Use this page
SmogRank, PM2.5 daily means compared, Chesterfield and Kasur, 14 Oct 2025 – 13 Oct 2026, smogrank.com/compare/gb-chesterfield/pk-kasur (accessed 14 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 2026-10-14 06:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.