SmogRank / Germany / Baden-Wurttemberg

Air quality in Ulm

Baden-Wurttemberg, Germany. PM2.5 from 1 reference monitor, updated hourly.

18.6µg/m³
Moderate

Mean for 30 Sept, the most recent day with readings, 1.2× the WHO 24-hour guideline. No hourly readings have reached us since; some networks publish days late.

Rank, worst first

24 hours–not enough data
7 days#461of 2,330, at 10.5 µg/m³
30 days#822of 2,324, at 7.1 µg/m³
This year#506of 2,173, at 11.0 µg/m³

Why it ranks here

Seasonal. Over the past year its worst months were January, averaging up to 21.5 µg/m³ against 6.8 in its cleanest month. Seasonal peaks usually come from heating, crop burning, fire or dust seasons.

Based on Ulm's own measurements; causes are the usual kinds for a pattern like this, not a confirmed source.

The last 12 months, day by day

1102031Oct 2025NovDecJan 2026FebMarAprMayJunJulAugSep2025-10-01: no data2025-10-02: no data2025-10-03: 11.3 µg/m³2025-10-04: 9.3 µg/m³2025-10-05: 2.5 µg/m³2025-10-06: no data2025-10-07: no data2025-10-08: 8.5 µg/m³2025-10-09: 7.7 µg/m³2025-10-10: 10.2 µg/m³2025-10-11: 7.6 µg/m³2025-10-12: 9.4 µg/m³2025-10-13: 7.4 µg/m³2025-10-14: 7.9 µg/m³2025-10-15: no data2025-10-16: 12.3 µg/m³2025-10-17: no data2025-10-18: 7.2 µg/m³2025-10-19: 11.9 µg/m³2025-10-20: 14.8 µg/m³2025-10-21: 5.9 µg/m³2025-10-22: 3.3 µg/m³2025-10-23: 2.4 µg/m³2025-10-24: 1.5 µg/m³2025-10-25: 2.1 µg/m³2025-10-26: 1.6 µg/m³2025-10-27: 1.5 µg/m³2025-10-28: 2.7 µg/m³2025-10-29: 5.4 µg/m³2025-10-30: 4.5 µg/m³2025-10-31: 12.5 µg/m³2025-11-01: 15.3 µg/m³2025-11-02: 3.3 µg/m³2025-11-03: 3.8 µg/m³2025-11-04: 9.8 µg/m³2025-11-05: 14.7 µg/m³2025-11-06: 14.6 µg/m³2025-11-07: 13.5 µg/m³2025-11-08: 14.4 µg/m³2025-11-09: 14.1 µg/m³2025-11-10: 9.9 µg/m³2025-11-11: 16.1 µg/m³2025-11-12: 18.2 µg/m³2025-11-13: 14.4 µg/m³2025-11-14: 16.7 µg/m³2025-11-15: 20.7 µg/m³2025-11-16: 10.0 µg/m³2025-11-17: 6.1 µg/m³2025-11-18: 8.6 µg/m³2025-11-19: 14.1 µg/m³2025-11-20: no data2025-11-21: no data2025-11-22: 19.5 µg/m³2025-11-23: 22.0 µg/m³2025-11-24: 7.5 µg/m³2025-11-25: 7.3 µg/m³2025-11-26: 8.4 µg/m³2025-11-27: 10.6 µg/m³2025-11-28: no data2025-11-29: no data2025-11-30: no data2025-12-01: no data2025-12-02: 14.5 µg/m³2025-12-03: 14.0 µg/m³2025-12-04: 13.8 µg/m³2025-12-05: 12.8 µg/m³2025-12-06: 8.9 µg/m³2025-12-07: 4.0 µg/m³2025-12-08: 3.1 µg/m³2025-12-09: 7.9 µg/m³2025-12-10: 13.0 µg/m³2025-12-11: 10.4 µg/m³2025-12-12: 20.1 µg/m³2025-12-13: 17.2 µg/m³2025-12-14: 11.2 µg/m³2025-12-15: 9.5 µg/m³2025-12-16: 15.2 µg/m³2025-12-17: 16.5 µg/m³2025-12-18: 17.0 µg/m³2025-12-19: 16.0 µg/m³2025-12-20: 18.2 µg/m³2025-12-21: 14.3 µg/m³2025-12-22: 14.6 µg/m³2025-12-23: 17.0 µg/m³2025-12-24: 9.3 µg/m³2025-12-25: 12.4 µg/m³2025-12-26: 15.3 µg/m³2025-12-27: 21.2 µg/m³2025-12-28: 16.5 µg/m³2025-12-29: 24.4 µg/m³2025-12-30: 17.2 µg/m³2025-12-31: 16.3 µg/m³2026-01-01: 41.9 µg/m³2026-01-02: 4.5 µg/m³2026-01-03: 5.0 µg/m³2026-01-04: 7.4 µg/m³2026-01-05: 13.1 µg/m³2026-01-06: 22.9 µg/m³2026-01-07: no data2026-01-08: no data2026-01-09: 2.9 µg/m³2026-01-10: 2.9 µg/m³2026-01-11: 19.1 µg/m³2026-01-12: 13.1 µg/m³2026-01-13: 12.6 µg/m³2026-01-14: 14.1 µg/m³2026-01-15: 14.4 µg/m³2026-01-16: 22.0 µg/m³2026-01-17: 22.9 µg/m³2026-01-18: 21.3 µg/m³2026-01-19: 24.8 µg/m³2026-01-20: 29.3 µg/m³2026-01-21: 36.7 µg/m³2026-01-22: 55.0 µg/m³2026-01-23: 46.4 µg/m³2026-01-24: 59.5 µg/m³2026-01-25: 43.4 µg/m³2026-01-26: 10.2 µg/m³2026-01-27: 12.4 µg/m³2026-01-28: 20.9 µg/m³2026-01-29: 16.4 µg/m³2026-01-30: 11.7 µg/m³2026-01-31: 16.4 µg/m³2026-02-01: 15.6 µg/m³2026-02-02: 22.0 µg/m³2026-02-03: 34.0 µg/m³2026-02-04: 22.7 µg/m³2026-02-05: 29.1 µg/m³2026-02-06: 20.6 µg/m³2026-02-07: 9.8 µg/m³2026-02-08: 12.8 µg/m³2026-02-09: 14.7 µg/m³2026-02-10: 20.3 µg/m³2026-02-11: 5.9 µg/m³2026-02-12: 2.0 µg/m³2026-02-13: 2.3 µg/m³2026-02-14: 5.0 µg/m³2026-02-15: 11.5 µg/m³2026-02-16: 2.5 µg/m³2026-02-17: 2.5 µg/m³2026-02-18: 5.8 µg/m³2026-02-19: no data2026-02-20: no data2026-02-21: 6.8 µg/m³2026-02-22: 6.6 µg/m³2026-02-23: 2.4 µg/m³2026-02-24: 4.6 µg/m³2026-02-25: 12.1 µg/m³2026-02-26: 12.8 µg/m³2026-02-27: 12.4 µg/m³2026-02-28: 11.8 µg/m³2026-03-01: 5.1 µg/m³2026-03-02: 14.7 µg/m³2026-03-03: 23.9 µg/m³2026-03-04: 24.0 µg/m³2026-03-05: 24.5 µg/m³2026-03-06: 30.8 µg/m³2026-03-07: 23.4 µg/m³2026-03-08: 26.8 µg/m³2026-03-09: 30.7 µg/m³2026-03-10: 21.6 µg/m³2026-03-11: 7.0 µg/m³2026-03-12: 6.5 µg/m³2026-03-13: 8.3 µg/m³2026-03-14: 6.9 µg/m³2026-03-15: 8.7 µg/m³2026-03-16: 8.8 µg/m³2026-03-17: 8.3 µg/m³2026-03-18: 18.8 µg/m³2026-03-19: 26.2 µg/m³2026-03-20: 19.3 µg/m³2026-03-21: 29.5 µg/m³2026-03-22: 21.7 µg/m³2026-03-23: 19.5 µg/m³2026-03-24: 21.8 µg/m³2026-03-25: 13.3 µg/m³2026-03-26: 5.6 µg/m³2026-03-27: 5.6 µg/m³2026-03-28: 7.4 µg/m³2026-03-29: 9.0 µg/m³2026-03-30: 6.8 µg/m³2026-03-31: 5.3 µg/m³2026-04-01: 8.0 µg/m³2026-04-02: 9.0 µg/m³2026-04-03: 8.5 µg/m³2026-04-04: 5.3 µg/m³2026-04-05: 5.4 µg/m³2026-04-06: 4.3 µg/m³2026-04-07: 7.3 µg/m³2026-04-08: 7.0 µg/m³2026-04-09: 11.4 µg/m³2026-04-10: 12.7 µg/m³2026-04-11: 17.6 µg/m³2026-04-12: 6.6 µg/m³2026-04-13: 14.9 µg/m³2026-04-14: 10.5 µg/m³2026-04-15: 19.6 µg/m³2026-04-16: 13.5 µg/m³2026-04-17: 11.2 µg/m³2026-04-18: 12.3 µg/m³2026-04-19: 9.8 µg/m³2026-04-20: 5.3 µg/m³2026-04-21: 7.0 µg/m³2026-04-22: 11.1 µg/m³2026-04-23: 6.9 µg/m³2026-04-24: 6.4 µg/m³2026-04-25: 5.5 µg/m³2026-04-26: no data2026-04-27: 6.6 µg/m³2026-04-28: 6.8 µg/m³2026-04-29: 6.0 µg/m³2026-04-30: 6.8 µg/m³2026-05-01: 4.6 µg/m³2026-05-02: 4.6 µg/m³2026-05-03: 6.2 µg/m³2026-05-04: 6.1 µg/m³2026-05-05: 9.4 µg/m³2026-05-06: 4.8 µg/m³2026-05-07: 6.7 µg/m³2026-05-08: 11.5 µg/m³2026-05-09: 7.3 µg/m³2026-05-10: 8.8 µg/m³2026-05-11: 5.1 µg/m³2026-05-12: 4.2 µg/m³2026-05-13: 4.7 µg/m³2026-05-14: 2.0 µg/m³2026-05-15: 2.5 µg/m³2026-05-16: 4.7 µg/m³2026-05-17: 4.1 µg/m³2026-05-18: 3.9 µg/m³2026-05-19: 5.1 µg/m³2026-05-20: 5.4 µg/m³2026-05-21: 6.8 µg/m³2026-05-22: 7.1 µg/m³2026-05-23: 8.4 µg/m³2026-05-24: 10.4 µg/m³2026-05-25: no data2026-05-26: 11.9 µg/m³2026-05-27: 14.6 µg/m³2026-05-28: 6.4 µg/m³2026-05-29: 4.8 µg/m³2026-05-30: 8.3 µg/m³2026-05-31: 12.3 µg/m³2026-06-01: 3.8 µg/m³2026-06-02: 7.0 µg/m³2026-06-03: 2.4 µg/m³2026-06-04: 3.4 µg/m³2026-06-05: 2.3 µg/m³2026-06-06: 3.8 µg/m³2026-06-07: 4.5 µg/m³2026-06-08: no data2026-06-09: no data2026-06-10: no data2026-06-11: 3.1 µg/m³2026-06-12: no data2026-06-13: no data2026-06-14: 5.3 µg/m³2026-06-15: 5.5 µg/m³2026-06-16: 9.2 µg/m³2026-06-17: 11.5 µg/m³2026-06-18: 6.8 µg/m³2026-06-19: 11.6 µg/m³2026-06-20: 9.0 µg/m³2026-06-21: 12.8 µg/m³2026-06-22: 15.3 µg/m³2026-06-23: 18.1 µg/m³2026-06-24: 13.0 µg/m³2026-06-25: 15.9 µg/m³2026-06-26: 15.9 µg/m³2026-06-27: 17.0 µg/m³2026-06-28: 14.7 µg/m³2026-06-29: 8.6 µg/m³2026-06-30: 8.9 µg/m³2026-07-01: 8.6 µg/m³2026-07-02: 7.4 µg/m³2026-07-03: 3.3 µg/m³2026-07-04: 4.6 µg/m³2026-07-05: 5.1 µg/m³2026-07-06: 4.5 µg/m³2026-07-07: 3.9 µg/m³2026-07-08: 7.3 µg/m³2026-07-09: 7.2 µg/m³2026-07-10: no data2026-07-11: no data2026-07-12: no data2026-07-13: 7.5 µg/m³2026-07-14: 11.4 µg/m³2026-07-15: 11.4 µg/m³2026-07-16: 12.6 µg/m³2026-07-17: 7.1 µg/m³2026-07-18: 8.4 µg/m³2026-07-19: 10.0 µg/m³2026-07-20: 5.9 µg/m³2026-07-21: 4.0 µg/m³2026-07-22: no data2026-07-23: 7.1 µg/m³2026-07-24: 7.8 µg/m³2026-07-25: 8.1 µg/m³2026-07-26: no data2026-07-27: 5.3 µg/m³2026-07-28: 7.2 µg/m³2026-07-29: 11.0 µg/m³2026-07-30: 16.9 µg/m³2026-07-31: 21.6 µg/m³2026-08-01: 11.6 µg/m³2026-08-02: no data2026-08-03: 14.2 µg/m³2026-08-04: 13.4 µg/m³2026-08-05: 10.9 µg/m³2026-08-06: 6.8 µg/m³2026-08-07: 5.8 µg/m³2026-08-08: 6.9 µg/m³2026-08-09: no data2026-08-10: 10.4 µg/m³2026-08-11: 10.0 µg/m³2026-08-12: 5.2 µg/m³2026-08-13: 6.3 µg/m³2026-08-14: 7.0 µg/m³2026-08-15: 8.4 µg/m³2026-08-16: no data2026-08-17: 24.4 µg/m³2026-08-18: 17.2 µg/m³2026-08-19: 4.2 µg/m³2026-08-20: no data2026-08-21: 6.0 µg/m³2026-08-22: 3.2 µg/m³2026-08-23: 4.0 µg/m³2026-08-24: 4.8 µg/m³2026-08-25: 9.3 µg/m³2026-08-26: 11.9 µg/m³2026-08-27: 8.2 µg/m³2026-08-28: 8.8 µg/m³2026-08-29: 3.9 µg/m³2026-08-30: 4.0 µg/m³2026-08-31: 2.7 µg/m³2026-09-01: 3.3 µg/m³2026-09-02: 7.5 µg/m³2026-09-03: 8.2 µg/m³2026-09-04: 5.6 µg/m³2026-09-05: 2.5 µg/m³2026-09-06: 4.9 µg/m³2026-09-07: 6.8 µg/m³2026-09-08: 10.4 µg/m³2026-09-09: 4.3 µg/m³2026-09-10: 5.3 µg/m³2026-09-11: no data2026-09-12: no data2026-09-13: no data2026-09-14: no data2026-09-15: 6.2 µg/m³2026-09-16: 5.6 µg/m³2026-09-17: no data2026-09-18: 6.2 µg/m³2026-09-19: 4.3 µg/m³2026-09-20: 5.0 µg/m³2026-09-21: 5.2 µg/m³2026-09-22: 6.3 µg/m³2026-09-23: 5.9 µg/m³2026-09-24: 7.8 µg/m³2026-09-25: 6.5 µg/m³2026-09-26: 8.1 µg/m³2026-09-27: 7.9 µg/m³2026-09-28: 9.7 µg/m³2026-09-29: 14.7 µg/m³2026-09-30: 18.6 µg/m³
71 of 328 measured days were over the WHO 24-hour guideline (15 µg/m³). One row per month, one square per local day.
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

Hour by hour

No hourly readings in the last few days. The chart returns when the monitors' data arrives.

Its world rank, day by day

#1#2334NovDecJanFebMarAprMayJunJulAugSep
Rank on each day's board (1 = most polluted city that day).

2026 against 2025, month by month

15Jan 2025: 12.9 µg/m³Jan 2026: 21.5 µg/m³JanFeb 2025: 23.2 µg/m³Feb 2026: 11.9 µg/m³FebMar 2025: 14.7 µg/m³Mar 2026: 15.8 µg/m³MarApr 2025: 8.7 µg/m³Apr 2026: 9.1 µg/m³AprMay 2025: 7.0 µg/m³May 2026: 6.8 µg/m³MayJun 2025: 9.0 µg/m³Jun 2026: 9.2 µg/m³JunJul 2025: 6.4 µg/m³Jul 2026: 8.3 µg/m³JulAug 2025: 9.6 µg/m³Aug 2026: 8.5 µg/m³AugSep 2025: 5.7 µg/m³Sep 2026: 7.1 µg/m³SepOct 2025: 6.9 µg/m³OctNov 2025: 12.5 µg/m³NovDec 2025: 14.1 µg/m³Dec
Faded bars: 2025. A month shows once it has 10 measured days.

This week against past years

This weekThis week: 10.5 µg/m³10.520252025: 8.7 µg/m³8.72024no data2023no data
Mean PM2.5 for 24 Sept to 30 Sept in each year. Dashed line: WHO 24-hour guideline.

Monitors

StationOperatorType
UlmODC-BYEEAReference
Ulm, HerdbrückeCC BY 4.0AirGradientLow-cost

The city's value is the median of its reference monitors each hour; low-cost sensors are listed but not counted when reference monitors exist. Data via OpenAQ; licences as listed. How we rank. Embed this on your site.

Other cities in Germany

30-day averages, µg/m³. All of Germany.

Updated 2026-10-01 18:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.