SmogRank / World / Europe / Germany / Hesse

Most polluted cities in Hesse, Germany

16 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Kassel at 7.6 µg/m³, #1,091 in the world.

About 0 people in this city breathed unhealthy air on an average day over the last 30 days.

Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.

Saxony-Anhalt: 12 measured citiesThuringia: 6 measured citiesBavaria: 20 measured citiesRheinland-Pfalz: 10 measured citiesSaarlandLower Saxony: 26 measured citiesNorth Rhine-Westphalia: 1 measured cityBaden-Wurttemberg: 26 measured citiesHesse: 16 measured cities#16 Glashütten: 4.2 µg/m³#15 Bensheim: 5.3 µg/m³#14 Rüsselsheim am Main: 5.5 µg/m³#10 Michelstadt: 5.7 µg/m³#11 Fulda: 5.7 µg/m³#12 Darmstadt: 5.7 µg/m³#13 Riedstadt: 5.7 µg/m³#9 Hanau am Main: 5.8 µg/m³#7 Wiesbaden: 5.9 µg/m³#8 Marburg an der Lahn: 5.9 µg/m³#6 Wetzlar: 6.1 µg/m³#4 Limburg an der Lahn: 6.3 µg/m³#5 Gießen: 6.3 µg/m³#3 Frankfurt am Main: 6.4 µg/m³#2 Lampertheim: 7.2 µg/m³#1 Kassel: 7.6 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
  1. 1Frankfurt am Main 0
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

Estimated: cities without a monitor

Hesse cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.

City7-day estimateBand
Offenbach≈ 8 µg/m³Good
Bad Homburg vor der Höhe≈ 7 µg/m³Good
Oberursel≈ 8 µg/m³Good
Rodgau≈ 8 µg/m³Good
Dreieich≈ 8 µg/m³Good
Maintal≈ 8 µg/m³Good
Langen≈ 8 µg/m³Good
Hofheim am Taunus≈ 10 µg/m³Moderate
Bad Vilbel≈ 8 µg/m³Good
Neu-Isenburg≈ 8 µg/m³Good
Dietzenbach≈ 8 µg/m³Good
Mörfelden-Walldorf≈ 10 µg/m³Moderate
Viernheim≈ 10 µg/m³Moderate
Bad Hersfeld≈ 7 µg/m³Good
Bad Nauheim≈ 7 µg/m³Good
Taunusstein≈ 8 µg/m³Good
Mühlheim am Main≈ 8 µg/m³Good
Kelkheim≈ 10 µg/m³Moderate
Baunatal≈ 8 µg/m³Good
Friedberg≈ 7 µg/m³Good
Weiterstadt≈ 10 µg/m³Moderate
Idstein≈ 8 µg/m³Good
Heppenheim an der Bergstrasse≈ 8 µg/m³Good
Pfungstadt≈ 8 µg/m³Good
Obertshausen≈ 8 µg/m³Good
Griesheim≈ 10 µg/m³Moderate
Butzbach≈ 7 µg/m³Good
Hattersheim≈ 10 µg/m³Moderate
Korbach≈ 7 µg/m³Good
Friedrichsdorf≈ 7 µg/m³Good
Groß-Gerau≈ 10 µg/m³Moderate
Bad Soden am Taunus≈ 10 µg/m³Moderate
Dillenburg≈ 7 µg/m³Good
Büdingen≈ 6 µg/m³Good
Eschborn≈ 10 µg/m³Moderate
Gelnhausen≈ 6 µg/m³Good
Karben≈ 7 µg/m³Good
Stadtallendorf≈ 7 µg/m³Good
Seligenstadt≈ 8 µg/m³Good
Groß-Umstadt≈ 8 µg/m³Good

Bad-air episodes in Hesse

Times when many cities around here had PM2.5 at twice their usual or more on the same days.

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SmogRank, most polluted cities in Hesse, Germany, PM2.5, last 30 days to 6 Oct 2026, 22:00 UTC, smogrank.com/de/region/hesse?w=30d.

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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.

Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.