SmogRank / Heilbronn / Munich

Heilbronn vs Munich: PM2.5 compared

Over the last year, Heilbronn's air was 12% more polluted than Munich's: PM2.5 averaged 11.4 µg/m³ against 10.2, on the 322 days both cities were measured. Heilbronn had the dirtier air on 182 of those days, Munich on 135. Heilbronn was over the WHO's daily guideline of 15 µg/m³ on 81 of them, Munich on 48.

Right now

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

The last year, day by day

Heilbronn
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

15Heilbronn, Nov 2025: 14.5 µg/m³Munich, Nov 2025: 9.6 µg/m³Nov 2025Heilbronn, Dec: 14.9 µg/m³Munich, Dec: 11.0 µg/m³DecHeilbronn, Jan 2026: 23.2 µg/m³Munich, Jan 2026: 19.3 µg/m³Jan 2026Heilbronn, Feb: 11.3 µg/m³Munich, Feb: 9.9 µg/m³FebHeilbronn, Mar: 16.3 µg/m³Munich, Mar: 13.8 µg/m³MarHeilbronn, Apr: 8.7 µg/m³Munich, Apr: 8.7 µg/m³AprHeilbronn, May: 6.5 µg/m³Munich, May: 7.8 µg/m³MayHeilbronn, Jun: 10.0 µg/m³Munich, Jun: 9.1 µg/m³JunHeilbronn, Jul: 9.3 µg/m³Munich, Jul: 8.4 µg/m³JulHeilbronn, Aug: 8.0 µg/m³Munich, Aug: 8.5 µg/m³AugHeilbronn, Sep: 6.6 µg/m³Munich, Sep: 8.3 µg/m³SepOct
Monthly means in µg/m³ over the days both cities were measured. Solid: Heilbronn. Faded: Munich. A month shows once both share 10 such days. Dashed line: the WHO daily guideline.

Year by year

YearHeilbronnMunichDays both measuredDays Heilbronn was worse
2026 so far5554248125
20255654300173
20245152252100
2023474823998

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

Heilbronn

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

Heilbronn

Side by side with Ludwigsburg, Gujranwala.

Munich

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

Use this page

SmogRank, PM2.5 daily means compared, Heilbronn and Munich, 8 Oct 2025 – 5 Oct 2026, smogrank.com/compare/de-heilbronn/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 21:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.