Ost, Freiburg im Breisgau, Baden Wurttemberg, Germany Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Ost, Freiburg im Breisgau, Baden Wurttemberg, Germany
AQI Trends: Highest and Lowest
Same Day Analysis (30th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 24 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 30th Sep - 1st Oct 2025
Ost, Freiburg im Breisgau, Baden Wurttemberg, Germany
7 AM30th Sep 2025
7 PM
6 AM1st Oct 2025
AQI
AQI
57AQI
11AQI
In the last 24 hours,
Ost's AQI reached its highest point of 57 at 11 PM during the Night, while the lowest point, undefined, was recorded at 6 AM during the Night between 30th Sep and 1st Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Ost, Freiburg im Breisgau, Baden Wurttemberg, Germany
16°C14/21°C
15°C11/20°C
18°C14/24°C
17°C13/22°C
14°C11/18°C
15°C9/22°C
17°C11/25°C
17°C15/21°C
16°C12/20°C
15°C11/20°C
15°C12/19°C
14°C11/18°C
15°C10/19°C
15°C12/20°C
18°C14/21°C
13°C11/17°C
13°C9/17°C
17°C11/23°C
18°C12/26°C
21°C17/28°C
17°C12/22°C
11°C10/12°C
10°C9/10°C
9°C8/10°C
9°C8/11°C
9°C7/10°C
10°C8/14°C
11°C6/17°C
12°C7/16°C
--°C/°C
--°C/°C
20AQI
17AQI
21AQI
18AQI
2025 Days Vs Air Quality
Ost, Freiburg im Breisgau, Baden Wurttemberg, Germany
90%
113
10%
12
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 273 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Ost, Freiburg im Breisgau, Baden Wurttemberg, Germany
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI
20AQI
21AQI
20AQI
21AQI
19AQI
21AQI
16AQI
17AQI
15AQI
24AQI
34AQI
56AQI
60AQI
54AQI
57AQI
58AQI
54AQI
35AQI
31AQI
33AQI
37AQI
40AQI
35AQI
34AQI
35AQI
29AQI
26AQI
28AQI
26AQI
25AQI
25AQI
26AQI
31AQI
35AQI
35AQI
39AQI
35AQI
30AQI
24AQI
22AQI
22AQI
23AQI
24AQI
24AQI
24AQI
26AQI
25AQI
28AQI
23AQI
22AQI
23AQI
23AQI
20AQI
18AQI
17AQI
17AQI
18AQI
21AQI
24AQI
20AQI
23AQI
24AQI
22AQI
28AQI
25AQI
22AQI
22AQI
24AQI
24AQI
25AQI
24AQI
30AQI
37AQI
46AQI
52AQI
56AQI
56AQI
56AQI
59AQI
55AQI
45AQI
37AQI
38AQI
31AQI
30AQI
26AQI
24AQI
24AQI
25AQI
34AQI
35AQI
23AQI
18AQI
15AQI
18AQI
18AQI
19AQI
18AQI
19AQI
19AQI
19AQI
23AQI
28AQI
22AQI
18AQI
16AQI
16AQI
16AQI
16AQI
17AQI
19AQI
17AQI
20AQI
24AQI
26AQI
20AQI
15AQI
14AQI
10AQI
11AQI
12AQI
12AQI
35AQI
24AQI
20AQI
33AQI
25AQI
34AQI
19AQI
No. of days
202527AQI
Highest AQI recorded in
August34AQI
Lowest AQI recorded in
September19AQI
Most & Least Polluted Years Over the Last 1 Years
Ost's annual 2025 AQI (27) shows an average percentage change of NaN% (improved AQI) compared to previous years: .