Constance, Konstanz, 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
Constance, Konstanz, Baden Wurttemberg, Germany
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 15 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Constance, Konstanz, Baden Wurttemberg, Germany
6 AM17th Sep 2025
8 PM
5 AM18th Sep 2025
AQI
AQI
19AQI
17AQI
In the last 24 hours,
Constance's AQI reached its highest point of 19 at 12 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Constance, Konstanz, Baden Wurttemberg, Germany
20°C12/28°C
17°C14/19°C
16°C14/19°C
17°C12/23°C
15°C11/20°C
14°C8/21°C
15°C8/23°C
18°C11/27°C
20°C14/27°C
15°C13/17°C
15°C12/20°C
15°C10/20°C
15°C9/23°C
15°C12/21°C
14°C10/19°C
16°C9/23°C
16°C12/24°C
13°C9/18°C
13°C7/21°C
15°C8/24°C
16°C11/22°C
15°C12/21°C
12°C10/17°C
14°C10/19°C
12°C9/15°C
14°C9/20°C
15°C12/20°C
18°C14/24°C
14°C10/17°C
--°C/°C
--°C/°C
23AQI
22AQI
25AQI
21AQI
2025 Days Vs Air Quality
Constance, Konstanz, Baden Wurttemberg, Germany
76%
197
24%
61
0.3%
1
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2025, 76% of 260 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Constance, Konstanz, Baden Wurttemberg, Germany
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
87AQI
66AQI
39AQI
43AQI
51AQI
45AQI
28AQI
27AQI
27AQI
26AQI
35AQI
39AQI
37AQI
51AQI
70AQI
53AQI
52AQI
57AQI
65AQI
72AQI
64AQI
66AQI
62AQI
46AQI
50AQI
39AQI
26AQI
24AQI
26AQI
31AQI
30AQI
33AQI
51AQI
57AQI
63AQI
73AQI
69AQI
60AQI
70AQI
80AQI
84AQI
112AQI
95AQI
59AQI
56AQI
64AQI
71AQI
68AQI
66AQI
71AQI
85AQI
88AQI
77AQI
74AQI
58AQI
57AQI
37AQI
28AQI
31AQI
33AQI
44AQI
46AQI
58AQI
69AQI
71AQI
68AQI
66AQI
81AQI
74AQI
53AQI
46AQI
38AQI
32AQI
42AQI
36AQI
47AQI
38AQI
40AQI
52AQI
45AQI
43AQI
30AQI
23AQI
25AQI
44AQI
53AQI
41AQI
56AQI
52AQI
33AQI
31AQI
34AQI
39AQI
45AQI
37AQI
29AQI
19AQI
26AQI
34AQI
42AQI
51AQI
49AQI
45AQI
35AQI
41AQI
31AQI
19AQI
16AQI
19AQI
20AQI
16AQI
14AQI
18AQI
16AQI
16AQI
22AQI
28AQI
35AQI
32AQI
31AQI
37AQI
38AQI
42AQI
33AQI
18AQI
17AQI
27AQI
38AQI
42AQI
32AQI
28AQI
21AQI
19AQI
30AQI
35AQI
24AQI
22AQI
28AQI
29AQI
28AQI
28AQI
25AQI
25AQI
21AQI
18AQI
19AQI
21AQI
21AQI
16AQI
22AQI
26AQI
26AQI
25AQI
21AQI
24AQI
19AQI
18AQI
16AQI
21AQI
35AQI
52AQI
65AQI
58AQI
58AQI
56AQI
54AQI
40AQI
34AQI
34AQI
39AQI
45AQI
39AQI
38AQI
39AQI
36AQI
31AQI
32AQI
30AQI
26AQI
25AQI
26AQI
29AQI
33AQI
34AQI
38AQI
38AQI
34AQI
25AQI
20AQI
18AQI
19AQI
22AQI
23AQI
24AQI
25AQI
23AQI
27AQI
24AQI
21AQI
22AQI
24AQI
21AQI
16AQI
16AQI
17AQI
17AQI
19AQI
21AQI
18AQI
20AQI
21AQI
22AQI
22AQI
23AQI
20AQI
22AQI
26AQI
23AQI
24AQI
31AQI
42AQI
48AQI
50AQI
56AQI
62AQI
62AQI
60AQI
61AQI
55AQI
48AQI
43AQI
41AQI
32AQI
26AQI
26AQI
22AQI
22AQI
28AQI
39AQI
42AQI
21AQI
16AQI
16AQI
15AQI
15AQI
16AQI
17AQI
17AQI
16AQI
19AQI
23AQI
27AQI
22AQI
19AQI
16AQI
17AQI
17AQI
14AQI
15AQI
46AQI
66AQI
48AQI
30AQI
27AQI
35AQI
24AQI
36AQI
18AQI
No. of days
202537AQI
Highest AQI recorded in
February66AQI
Lowest AQI recorded in
September18AQI
202435AQI
Highest AQI recorded in
January45AQI
Lowest AQI recorded in
October24AQI
202340AQI
Highest AQI recorded in
February57AQI
Lowest AQI recorded in
November24AQI
202243AQI
Highest AQI recorded in
March74AQI
Lowest AQI recorded in
September27AQI
202142AQI
Highest AQI recorded in
February59AQI
Lowest AQI recorded in
May30AQI
202042AQI
Highest AQI recorded in
March62AQI
Lowest AQI recorded in
June31AQI
Most & Least Polluted Years Over the Last 6 Years
Constance's annual 2025 AQI (37) shows an average percentage change of -6.8% (improved AQI) compared to previous years: 2020 (42), 2021 (42), 2022 (43), 2023 (40), 2024 (35).