SmogRank / World / Germany / Lower Saxony / 2025

Most polluted cities in Lower Saxony, Germany, 2025

27 cities in Lower Saxony, Germany ranked by their average PM2.5 over the 365 days; 26 above the WHO annual guideline (5.0 µg/m³). Worst: Oldenburg at 10.5 µg/m³, #813 of 2,624 cities in the world. Cleanest: Braunlage at 4.9. A city needs measurements on 70% of the days to be ranked.

Ranked by unhealthy days: the share of each city's measured days with a daily mean over 35.4 µg/m³ (US AQI 101+), Unhealthy for Sensitive Groups or worse on the US EPA's scale. Ties go to the higher average.

← Hildesheim 2% 2%0

Every city in Lower Saxony, Germany ranked for 2025, one column each, ranked by unhealthy days: height is the share of its measured days that were unhealthy, colour its average. Point at it to read a city; tap to open it.

1Hildesheim
2%
2Oldenburg
2%
3Walsrode
2%
4Hannover
2%
5Salzgitter
2%
6Osnabrück
2%
7Göttingen
2%
8Duderstadt
2%
9Wittingen
2%
10Braunschweig
2%
11Bösel
2%
12Lüchow
1%
13Norderney
1%
14Goslar
1%
15Wolfsburg
1%
16Lingen
1%
17Oyten
1%
18Lüneburg
1%
19Rinteln
1%
20Uslar
1%
21Ritterhude
1%
22Jork
1%
23Wilhelmshaven
1%
24Emden
1%
25Otterndorf
0%
26Lemwerder
0%
27Braunlage
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

All cities in the world, 2025 · All cities in Germany, 2025 · Lower Saxony now

Use this board

SmogRank, most polluted cities in Lower Saxony, Germany, PM2.5, 2025, smogrank.com/de/region/lower-saxony/history/2025 (accessed 6 Oct 2026).

Download top 10 (PNG)

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.