Basildon vs Tonbridge: PM2.5 compared

Basildon and Tonbridge were both measured on only one day over the last year, too few to compare them (it takes 30).

Right now

Basildon#1,064on the 24-hour board of 2,645, at 46 US AQI (8.2 µg/m³)

Tonbridge#2,526on the 24-hour board of 2,645, at 12 US AQI (2.2 µg/m³)

Compare either city with another

Basildon

Side by side with Grays (the nearest), Carlisle (United Kingdom's 2nd worst on 30 days), Kasur (the world's worst on 30 days).

Tonbridge

Side by side with Maidstone (the nearest), 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).