Herford vs Mahlow: PM2.5 compared
Herford and Mahlow were both measured on only 0 days over the last year, too few to compare them (it takes 30).
Right now
Herford#2,077on the 24-hour board of 2,593, at 22 US AQI (3.9 µg/m³)
Mahlow–no readings since 11 Oct
Compare either city with another
Herford
Side by side with Leopoldshöhe (the nearest), Kasur (the world's worst on 30 days).
Mahlow
Side by side with Blankenfelde-Mahlow (the nearest), Berlin (Germany's 2nd 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 08:07 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).