Ehrenfeld, Cologne, North Rhine Westphalia, Germany Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Ehrenfeld, Cologne, North Rhine Westphalia, Germany
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Ehrenfeld, Cologne, North Rhine Westphalia, Germany
7 AM4th Oct 2025
7 PM
6 AM5th Oct 2025
54AQI
22AQI
44AQI
16AQI
In the last 24 hours,
Ehrenfeld's AQI reached its highest point of 54 at 8 AM during the Day, while the lowest point, 16, was recorded at 9 PM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Ehrenfeld, Cologne, North Rhine Westphalia, Germany
17°C13/21°C
18°C12/24°C
20°C15/27°C
19°C16/22°C
14°C11/15°C
16°C11/22°C
16°C13/19°C
15°C12/19°C
15°C12/19°C
15°C11/20°C
18°C16/22°C
16°C14/19°C
15°C12/17°C
19°C14/24°C
20°C14/29°C
22°C16/29°C
16°C13/17°C
13°C11/17°C
14°C10/18°C
14°C10/18°C
9°C8/9°C
13°C9/18°C
14°C12/19°C
15°C10/21°C
15°C13/19°C
13°C10/18°C
12°C7/17°C
11°C6/17°C
12°C8/15°C
13°C11/17°C
--°C/°C
33AQI
30AQI
34AQI
29AQI
2025 Days Vs Air Quality
Ehrenfeld, Cologne, North Rhine Westphalia, Germany
91%
117
9%
12
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 278 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
Ehrenfeld, Cologne, North Rhine Westphalia, Germany
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
23AQI
21AQI
33AQI
31AQI
35AQI
30AQI
41AQI
22AQI
16AQI
15AQI
17AQI
21AQI
46AQI
47AQI
39AQI
45AQI
54AQI
48AQI
32AQI
34AQI
41AQI
44AQI
33AQI
27AQI
26AQI
31AQI
26AQI
24AQI
24AQI
22AQI
21AQI
20AQI
23AQI
25AQI
33AQI
35AQI
26AQI
23AQI
21AQI
18AQI
19AQI
22AQI
28AQI
25AQI
26AQI
28AQI
37AQI
29AQI
25AQI
28AQI
34AQI
43AQI
32AQI
20AQI
17AQI
18AQI
40AQI
43AQI
41AQI
46AQI
33AQI
29AQI
30AQI
26AQI
23AQI
21AQI
21AQI
22AQI
23AQI
23AQI
25AQI
26AQI
32AQI
34AQI
41AQI
43AQI
52AQI
58AQI
57AQI
51AQI
39AQI
26AQI
26AQI
31AQI
30AQI
23AQI
21AQI
21AQI
21AQI
26AQI
32AQI
34AQI
26AQI
19AQI
18AQI
18AQI
18AQI
17AQI
19AQI
19AQI
19AQI
20AQI
24AQI
25AQI
24AQI
21AQI
18AQI
16AQI
16AQI
15AQI
18AQI
20AQI
19AQI
23AQI
26AQI
30AQI
21AQI
18AQI
15AQI
17AQI
37AQI
51AQI
69AQI
60AQI
84AQI
76AQI
56AQI
56AQI
45AQI
26AQI
31AQI
29AQI
30AQI
27AQI
58AQI
No. of days
202530AQI
Highest AQI recorded in
October58AQI
Lowest AQI recorded in
May26AQI
Most & Least Polluted Years Over the Last 1 Years
Ehrenfeld's annual 2025 AQI (30) shows an average percentage change of NaN% (improved AQI) compared to previous years: .