SmogRank / Chesterfield / Dronfield
Chesterfield vs Dronfield: PM2.5 compared
Chesterfield and Dronfield were both measured on only 2 days over the last year, too few to compare them (it takes 30).
Right now
Chesterfield#2,307on the 24-hour board of 2,645, at 18 US AQI (3.2 µg/m³)
Dronfield#2,631on the 24-hour board of 2,645, at 6 US AQI (1.0 µg/m³)
Compare either city with another
Chesterfield
Side by side with Basildon (United Kingdom's worst on 30 days), Kasur (the world's worst on 30 days).
Dronfield
Side by side with Basildon (United Kingdom's worst on 30 days), Kasur (the world's worst on 30 days).
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 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence).