Herrenberg vs Mahlow: PM2.5 compared

Over the last year, Mahlow's PM2.5 was about 1.8× Herrenberg's: it averaged 14.6 µg/m³ against 7.9, on the 307 days both cities were measured. Mahlow had the dirtier air on 275 of those days, Herrenberg on 30. Mahlow was over the WHO's daily guideline of 15 µg/m³ on 100 of them, Herrenberg on 24.

Right now

Herrenberg#2,524on the 24-hour board of 2,696, at 14 US AQI (2.5 µg/m³)

Mahlow–no readings since 11 Oct

The last year, day by day

Herrenberg

Mahlow

Each city's daily mean from 14 Oct 2025 to 13 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

Monthly means in µg/m³ over the days both cities were measured. Solid: Herrenberg. Faded: Mahlow. A month shows once both share 10 such days. Dashed line: the WHO daily guideline, 15 µg/m³.

Year by year

Year	Herrenberg	Mahlow	Days both measured	Days Herrenberg was worse
2026 so far	7.8	15.0	235	20
2025	8.4	12.4	316	64
2024	7.6	13.6	248	25
2023	7.1	11.8	178	18

Means in µg/m³, as in the chart above, over the days both cities were measured that year; a year shows once they share 30 such days.

Each city's worst days

Herrenberg

25 Jan 20269934.6 µg/m³
24 Jan 20269231.1 µg/m³
1 Jan 20268829.0 µg/m³

Mahlow

23 Jan 202615967.6 µg/m³
6 Feb 202614252.0 µg/m³
22 Jan 202613348.6 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

Herrenberg

Side by side with Gärtringen (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).

Use this page

SmogRank, PM2.5 daily means compared, Herrenberg and Mahlow, 14 Oct 2025 – 13 Oct 2026, smogrank.com/compare/de-herrenberg/de-mahlow (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. Some low-cost readings: Sensor.Community, ODbL (data and licence).