Sankt Gallen, Sankt Gallen, Switzerland Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Sankt Gallen, Sankt Gallen, Switzerland
AQI Trends: Highest and Lowest
Same Day Analysis (29th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 24 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 30th Aug - 31st Aug 2025
Sankt Gallen, Sankt Gallen, Switzerland
6 AM30th Aug 2025
8 PM
5 AM31st Aug 2025
AQI
AQI
23AQI
14AQI
In the last 24 hours,
Sankt Gallen's AQI reached its highest point of 23 at 6 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 30th Aug and 31st Aug 2025.
Day & Night AQI Trend : Aug 2025
Sankt Gallen, Sankt Gallen, Switzerland
16°C12/20°C
13°C12/15°C
13°C10/17°C
13°C10/18°C
18°C13/25°C
15°C11/21°C
18°C12/25°C
21°C16/27°C
22°C16/28°C
21°C17/26°C
19°C14/26°C
22°C17/29°C
23°C19/28°C
22°C18/27°C
21°C17/27°C
20°C16/25°C
17°C14/19°C
17°C12/23°C
19°C14/24°C
17°C15/18°C
15°C14/18°C
16°C13/19°C
14°C11/17°C
13°C9/18°C
15°C9/21°C
18°C12/25°C
20°C15/25°C
15°C12/17°C
14°C12/18°C
--°C/°C
--°C/°C
37AQI
37AQI
37AQI
35AQI
2025 Days Vs Air Quality
Sankt Gallen, Sankt Gallen, Switzerland
78%
189
22%
52
Total number of days with different AQI categories in last 242 days in 2025 (123 days remaining)
Under WHO’s Safe Air Quality Limits: 78%
Health Risk Level:
Low
In 2025, 78% of 242 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
Sankt Gallen, Sankt Gallen, Switzerland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
62AQI
60AQI
57AQI
56AQI
55AQI
51AQI
47AQI
42AQI
37AQI
35AQI
36AQI
37AQI
41AQI
49AQI
52AQI
53AQI
54AQI
55AQI
56AQI
57AQI
58AQI
57AQI
56AQI
53AQI
49AQI
45AQI
40AQI
37AQI
34AQI
35AQI
33AQI
42AQI
47AQI
45AQI
49AQI
52AQI
56AQI
56AQI
56AQI
56AQI
59AQI
61AQI
59AQI
56AQI
54AQI
56AQI
57AQI
58AQI
59AQI
60AQI
60AQI
58AQI
57AQI
56AQI
54AQI
53AQI
49AQI
46AQI
42AQI
41AQI
43AQI
43AQI
46AQI
48AQI
49AQI
51AQI
51AQI
51AQI
48AQI
44AQI
41AQI
39AQI
36AQI
36AQI
35AQI
36AQI
36AQI
36AQI
37AQI
38AQI
38AQI
34AQI
32AQI
31AQI
36AQI
37AQI
36AQI
41AQI
39AQI
35AQI
34AQI
35AQI
34AQI
35AQI
31AQI
28AQI
25AQI
26AQI
30AQI
32AQI
33AQI
32AQI
33AQI
31AQI
25AQI
23AQI
20AQI
17AQI
20AQI
19AQI
18AQI
18AQI
19AQI
17AQI
17AQI
21AQI
26AQI
29AQI
27AQI
27AQI
31AQI
34AQI
35AQI
24AQI
20AQI
22AQI
28AQI
32AQI
38AQI
28AQI
23AQI
22AQI
23AQI
28AQI
30AQI
21AQI
22AQI
25AQI
26AQI
26AQI
26AQI
23AQI
22AQI
20AQI
19AQI
19AQI
20AQI
20AQI
18AQI
19AQI
21AQI
24AQI
23AQI
20AQI
22AQI
20AQI
18AQI
17AQI
24AQI
31AQI
50AQI
59AQI
56AQI
55AQI
54AQI
45AQI
35AQI
35AQI
36AQI
40AQI
43AQI
39AQI
38AQI
37AQI
34AQI
30AQI
33AQI
31AQI
30AQI
31AQI
34AQI
33AQI
35AQI
37AQI
44AQI
45AQI
42AQI
28AQI
24AQI
23AQI
25AQI
26AQI
29AQI
28AQI
26AQI
26AQI
28AQI
23AQI
22AQI
24AQI
26AQI
21AQI
18AQI
17AQI
18AQI
18AQI
20AQI
20AQI
19AQI
21AQI
22AQI
23AQI
22AQI
21AQI
21AQI
22AQI
23AQI
23AQI
27AQI
31AQI
38AQI
46AQI
51AQI
56AQI
58AQI
58AQI
57AQI
59AQI
55AQI
51AQI
48AQI
45AQI
33AQI
30AQI
29AQI
27AQI
27AQI
29AQI
39AQI
40AQI
24AQI
48AQI
54AQI
40AQI
26AQI
25AQI
35AQI
26AQI
38AQI
No. of days
202536AQI
Highest AQI recorded in
February54AQI
Lowest AQI recorded in
May25AQI
202428AQI
Highest AQI recorded in
December40AQI
Lowest AQI recorded in
October18AQI
202326AQI
Highest AQI recorded in
June39AQI
Lowest AQI recorded in
January20AQI
202225AQI
Highest AQI recorded in
July35AQI
Lowest AQI recorded in
October19AQI
202123AQI
Highest AQI recorded in
June31AQI
Lowest AQI recorded in
November16AQI
202020AQI
Highest AQI recorded in
April30AQI
Lowest AQI recorded in
October13AQI
Most & Least Polluted Years Over the Last 6 Years
Sankt Gallen's annual 2025 AQI (36) shows an average percentage change of 51.08% (worsened AQI) compared to previous years: 2020 (20), 2021 (23), 2022 (25), 2023 (26), 2024 (28).