SmogRank / Hildesheim / Mahlow
Hildesheim vs Mahlow: PM2.5 compared
Over the last year, Mahlow's PM2.5 was about 1.5× Hildesheim's: it averaged 14.4 µg/m³ against 9.5, on the 335 days both cities were measured. Mahlow had the dirtier air on 303 of those days, Hildesheim on 30. Mahlow was over the WHO's daily guideline of 15 µg/m³ on 109 of them, Hildesheim on 51.
Right now
The last year, day by day
Month by month
Year by year
| Year | Hildesheim | Mahlow | Days Hildesheim was worse |
|---|---|---|---|
| 2026 so far | 9.8 | 14.9 | 23 |
| 2025 | 9.3 | 12.3 | 59 |
| 2024 | 8.0 | 13.4 | 16 |
| 2023 | 7.0 | 11.0 | 22 |
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
Hildesheim
- 24 Jan 202616270.7 µg/m³
- 25 Jan 202615358.0 µg/m³
- 23 Jan 202613448.9 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
Hildesheim
Side by side with Sarstedt (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, Hildesheim and Mahlow, 14 Oct 2025 – 13 Oct 2026, smogrank.com/compare/de-hildesheim/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.