SmogRank / Heidelberg / Munich

Heidelberg vs Munich: PM2.5 compared

Over the last year, Munich's air was 11% more polluted than Heidelberg's: PM2.5 averaged 10.2 µg/m³ against 9.2, on the 318 days both cities were measured. Munich had the dirtier air on 206 of those days, Heidelberg on 107. Munich was over the WHO's daily guideline of 15 µg/m³ on 46 of them, Heidelberg on 42.

Right now

Heidelberg–not on the 24-hour board right now
Munich–not on the 24-hour board right now

The last year, day by day

Heidelberg
Munich
Each city's daily mean from 6 Oct 2025 to 5 Oct 2026, one stripe a day, coloured by band. A blank stripe is a day without a daily mean.

Month by month

15Heidelberg, Nov 2025: 10.0 µg/m³Munich, Nov 2025: 9.5 µg/m³Nov 2025Heidelberg, Dec: 11.4 µg/m³Munich, Dec: 10.7 µg/m³DecHeidelberg, Jan 2026: 19.5 µg/m³Munich, Jan 2026: 19.3 µg/m³Jan 2026Heidelberg, Feb: 9.5 µg/m³Munich, Feb: 9.9 µg/m³FebHeidelberg, Mar: 14.3 µg/m³Munich, Mar: 13.8 µg/m³MarHeidelberg, Apr: 6.8 µg/m³Munich, Apr: 8.8 µg/m³AprHeidelberg, May: 5.4 µg/m³Munich, May: 7.8 µg/m³MayHeidelberg, Jun: 8.4 µg/m³Munich, Jun: 9.1 µg/m³JunHeidelberg, Jul: 7.3 µg/m³Munich, Jul: 8.4 µg/m³JulHeidelberg, Aug: 6.6 µg/m³Munich, Aug: 8.7 µg/m³AugHeidelberg, Sep: 5.2 µg/m³Munich, Sep: 7.9 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Heidelberg. Faded: Munich. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Year by year

YearHeidelbergMunichDays both measuredDays Heidelberg was worse
2026 so far515424673
2025515328796
2024465224988
2023414824076

Means in US AQI over the days both cities were measured that year; a year shows once they share 30 such days.

Each city's worst days

Heidelberg

Munich

Daily means in US AQI, over the days both cities were measured in the last year. Each date opens that day's world board.

Compare either city with another

Heidelberg

Side by side with Wiesloch, Gujranwala.

Munich

Side by side with Herrsching am Ammersee, Augsburg, Gujranwala.

Use this page

SmogRank, PM2.5 daily means compared, Heidelberg and Munich, 8 Oct 2025 – 5 Oct 2026, smogrank.com/compare/de-heidelberg/de-munich (accessed 6 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 2026-10-06 20:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.