Sion Airport A9, Sion, Valais, 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
Sion Airport A9, Sion, Valais, Switzerland
AQI Trends: Highest and Lowest
Same Day Analysis (16th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 31 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 16th Aug - 17th Aug 2026
Sion Airport A9, Sion, Valais, Switzerland
6 AM16th Aug 2026
9 PM
5 AM17th Aug 2026
36AQI
29AQI
38AQI
29AQI
In the last 24 hours,
Sion Airport A9's AQI reached its highest point of 38 at 9 PM during the Night, while the lowest point, 29, was recorded at 5 AM during the Night between 16th Aug and 17th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Sion Airport A9, Sion, Valais, Switzerland
14°C9/20°C
14°C8/21°C
13°C8/18°C
13°C6/20°C
13°C7/19°C
14°C7/22°C
15°C10/23°C
11°C9/14°C
13°C7/20°C
17°C10/25°C
19°C13/26°C
19°C13/27°C
18°C13/25°C
17°C12/22°C
18°C12/25°C
17°C13/26°C
16°C12/25°C
16°C12/23°C
15°C12/20°C
15°C10/21°C
16°C10/24°C
18°C12/25°C
17°C12/23°C
17°C12/25°C
17°C12/25°C
18°C12/25°C
17°C12/25°C
16°C11/24°C
16°C12/23°C
9°C0/16°C
37AQI
37AQI
35AQI
35AQI
2026 Days Vs Air Quality
Sion Airport A9, Sion, Valais, Switzerland
90%
203
10%
22
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 229 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
Sion Airport A9, Sion, Valais, Switzerland
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
71AQI (US)
55AQI (US)
26AQI (US)
40AQI (US)
61AQI (US)
70AQI (US)
50AQI (US)
43AQI (US)
42AQI (US)
16AQI (US)
27AQI (US)
36AQI (US)
30AQI (US)
30AQI (US)
41AQI (US)
39AQI (US)
54AQI (US)
42AQI (US)
38AQI (US)
42AQI (US)
49AQI (US)
66AQI (US)
78AQI (US)
40AQI (US)
56AQI (US)
46AQI (US)
44AQI (US)
63AQI (US)
54AQI (US)
35AQI (US)
38AQI (US)
51AQI (US)
24AQI (US)
29AQI (US)
44AQI (US)
43AQI (US)
25AQI (US)
26AQI (US)
41AQI (US)
58AQI (US)
24AQI (US)
24AQI (US)
27AQI (US)
21AQI (US)
31AQI (US)
14AQI (US)
33AQI (US)
32AQI (US)
25AQI (US)
22AQI (US)
34AQI (US)
30AQI (US)
26AQI (US)
26AQI (US)
17AQI (US)
27AQI (US)
29AQI (US)
19AQI (US)
24AQI (US)
24AQI (US)
30AQI (US)
34AQI (US)
41AQI (US)
52AQI (US)
70AQI (US)
74AQI (US)
58AQI (US)
46AQI (US)
46AQI (US)
30AQI (US)
12AQI (US)
24AQI (US)
22AQI (US)
16AQI (US)
28AQI (US)
14AQI (US)
34AQI (US)
43AQI (US)
44AQI (US)
50AQI (US)
28AQI (US)
37AQI (US)
38AQI (US)
23AQI (US)
13AQI (US)
15AQI (US)
27AQI (US)
12AQI (US)
20AQI (US)
22AQI (US)
23AQI (US)
26AQI (US)
23AQI (US)
21AQI (US)
21AQI (US)
13AQI (US)
14AQI (US)
20AQI (US)
20AQI (US)
14AQI (US)
23AQI (US)
25AQI (US)
14AQI (US)
11AQI (US)
26AQI (US)
34AQI (US)
19AQI (US)
18AQI (US)
16AQI (US)
16AQI (US)
22AQI (US)
21AQI (US)
14AQI (US)
17AQI (US)
14AQI (US)
23AQI (US)
17AQI (US)
21AQI (US)
25AQI (US)
19AQI (US)
18AQI (US)
14AQI (US)
16AQI (US)
18AQI (US)
18AQI (US)
22AQI (US)
27AQI (US)
24AQI (US)
18AQI (US)
24AQI (US)
17AQI (US)
27AQI (US)
36AQI (US)
36AQI (US)
34AQI (US)
37AQI (US)
37AQI (US)
36AQI (US)
37AQI (US)
40AQI (US)
52AQI (US)
41AQI (US)
34AQI (US)
26AQI (US)
25AQI (US)
21AQI (US)
19AQI (US)
22AQI (US)
27AQI (US)
19AQI (US)
10AQI (US)
11AQI (US)
11AQI (US)
21AQI (US)
16AQI (US)
20AQI (US)
12AQI (US)
10AQI (US)
12AQI (US)
21AQI (US)
20AQI (US)
20AQI (US)
22AQI (US)
22AQI (US)
24AQI (US)
27AQI (US)
18AQI (US)
15AQI (US)
18AQI (US)
23AQI (US)
22AQI (US)
21AQI (US)
19AQI (US)
23AQI (US)
27AQI (US)
23AQI (US)
21AQI (US)
14AQI (US)
14AQI (US)
14AQI (US)
13AQI (US)
11AQI (US)
10AQI (US)
14AQI (US)
12AQI (US)
17AQI (US)
16AQI (US)
22AQI (US)
49AQI (US)
23AQI (US)
28AQI (US)
45AQI (US)
34AQI (US)
26AQI (US)
25AQI (US)
27AQI (US)
24AQI (US)
36AQI (US)
34AQI (US)
23AQI (US)
30AQI (US)
27AQI (US)
26AQI (US)
24AQI (US)
36AQI (US)
27AQI (US)
36AQI (US)
53AQI (US)
65AQI (US)
36AQI (US)
40AQI (US)
35AQI (US)
40AQI (US)
35AQI (US)
28AQI (US)
22AQI (US)
26AQI (US)
26AQI (US)
27AQI (US)
38AQI (US)
54AQI (US)
84AQI (US)
51AQI (US)
31AQI (US)
31AQI (US)
46AQI (US)
30AQI (US)
33AQI (US)
20AQI (US)
27AQI (US)
19AQI (US)
27AQI (US)
38AQI (US)
No. of days
202630AQI (US)
Highest AQI (US) recorded in
January46AQI (US)
Lowest AQI (US) recorded in
June19AQI (US)
202539AQI (US)
Highest AQI (US) recorded in
February56AQI (US)
Lowest AQI (US) recorded in
September20AQI (US)
202427AQI (US)
Highest AQI (US) recorded in
December46AQI (US)
Lowest AQI (US) recorded in
October19AQI (US)
202325AQI (US)
Highest AQI (US) recorded in
June34AQI (US)
Lowest AQI (US) recorded in
November18AQI (US)
202225AQI (US)
Highest AQI (US) recorded in
July33AQI (US)
Lowest AQI (US) recorded in
October17AQI (US)
202122AQI (US)
Highest AQI (US) recorded in
April29AQI (US)
Lowest AQI (US) recorded in
October15AQI (US)
202023AQI (US)
Highest AQI (US) recorded in
April31AQI (US)
Lowest AQI (US) recorded in
October14AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Sion Airport A9's annual 2026 AQI (US) (30) shows an average percentage change of 15.8% (worsened AQI (US)) compared to previous years: 2020 (23), 2021 (22), 2022 (25), 2023 (25), 2024 (27), 2025 (39).