Biel Bienne, Bern, Switzerland 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
Biel Bienne, Bern, Switzerland
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 33 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 1st Oct - 2nd Oct 2026
Biel Bienne, Bern, Switzerland
7 AM1st Oct 2026
7 PM
6 AM2nd Oct 2026
56AQI
23AQI
46AQI
14AQI
In the last 24 hours,
Biel Bienne's AQI reached its highest point of 56 at 3 PM during the Day, while the lowest point, 14, was recorded at 4 AM during the Night between 1st Oct and 2nd Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
Biel Bienne, Bern, Switzerland
18°C15/22°C
21°C16/27°C
18°C16/21°C
19°C14/24°C
22°C18/26°C
21°C18/28°C
12°C9/17°C
12°C8/16°C
14°C10/18°C
15°C11/19°C
17°C13/21°C
18°C14/21°C
19°C14/24°C
14°C10/18°C
13°C10/17°C
13°C11/15°C
15°C11/19°C
17°C14/21°C
13°C10/17°C
12°C8/17°C
14°C8/20°C
15°C13/18°C
14°C10/20°C
17°C13/22°C
18°C14/24°C
19°C16/24°C
19°C16/23°C
19°C16/23°C
15°C12/18°C
14°C10/17°C
36AQI
31AQI
37AQI
31AQI
2026 Days Vs Air Quality
Biel Bienne, Bern, Switzerland
90%
245
10%
27
Total number of days with different AQI categories in last 275 days in 2026 (90 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 275 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
Biel Bienne, Bern, Switzerland
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
68AQI (US)
34AQI (US)
23AQI (US)
51AQI (US)
64AQI (US)
69AQI (US)
63AQI (US)
35AQI (US)
22AQI (US)
11AQI (US)
35AQI (US)
48AQI (US)
43AQI (US)
43AQI (US)
42AQI (US)
52AQI (US)
62AQI (US)
70AQI (US)
57AQI (US)
53AQI (US)
57AQI (US)
56AQI (US)
69AQI (US)
50AQI (US)
60AQI (US)
56AQI (US)
26AQI (US)
32AQI (US)
32AQI (US)
45AQI (US)
41AQI (US)
49AQI (US)
50AQI (US)
39AQI (US)
38AQI (US)
52AQI (US)
42AQI (US)
17AQI (US)
32AQI (US)
45AQI (US)
40AQI (US)
20AQI (US)
23AQI (US)
30AQI (US)
42AQI (US)
34AQI (US)
32AQI (US)
37AQI (US)
36AQI (US)
37AQI (US)
29AQI (US)
18AQI (US)
24AQI (US)
34AQI (US)
32AQI (US)
34AQI (US)
33AQI (US)
35AQI (US)
33AQI (US)
31AQI (US)
50AQI (US)
47AQI (US)
44AQI (US)
58AQI (US)
74AQI (US)
81AQI (US)
82AQI (US)
67AQI (US)
50AQI (US)
13AQI (US)
18AQI (US)
38AQI (US)
35AQI (US)
29AQI (US)
35AQI (US)
31AQI (US)
30AQI (US)
64AQI (US)
55AQI (US)
43AQI (US)
38AQI (US)
42AQI (US)
36AQI (US)
33AQI (US)
9AQI (US)
20AQI (US)
28AQI (US)
25AQI (US)
22AQI (US)
27AQI (US)
29AQI (US)
28AQI (US)
28AQI (US)
24AQI (US)
30AQI (US)
25AQI (US)
28AQI (US)
26AQI (US)
26AQI (US)
28AQI (US)
34AQI (US)
26AQI (US)
14AQI (US)
22AQI (US)
38AQI (US)
33AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
21AQI (US)
22AQI (US)
21AQI (US)
26AQI (US)
25AQI (US)
27AQI (US)
23AQI (US)
20AQI (US)
22AQI (US)
26AQI (US)
25AQI (US)
21AQI (US)
26AQI (US)
29AQI (US)
26AQI (US)
20AQI (US)
24AQI (US)
28AQI (US)
24AQI (US)
20AQI (US)
22AQI (US)
21AQI (US)
26AQI (US)
37AQI (US)
37AQI (US)
35AQI (US)
36AQI (US)
35AQI (US)
34AQI (US)
35AQI (US)
38AQI (US)
52AQI (US)
41AQI (US)
42AQI (US)
30AQI (US)
30AQI (US)
27AQI (US)
29AQI (US)
30AQI (US)
31AQI (US)
32AQI (US)
16AQI (US)
11AQI (US)
16AQI (US)
22AQI (US)
20AQI (US)
23AQI (US)
19AQI (US)
20AQI (US)
18AQI (US)
20AQI (US)
21AQI (US)
20AQI (US)
22AQI (US)
27AQI (US)
28AQI (US)
27AQI (US)
25AQI (US)
23AQI (US)
26AQI (US)
32AQI (US)
41AQI (US)
26AQI (US)
26AQI (US)
31AQI (US)
30AQI (US)
26AQI (US)
33AQI (US)
24AQI (US)
23AQI (US)
21AQI (US)
24AQI (US)
22AQI (US)
18AQI (US)
19AQI (US)
21AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
29AQI (US)
27AQI (US)
28AQI (US)
36AQI (US)
34AQI (US)
27AQI (US)
25AQI (US)
28AQI (US)
38AQI (US)
33AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
24AQI (US)
31AQI (US)
49AQI (US)
38AQI (US)
25AQI (US)
43AQI (US)
56AQI (US)
64AQI (US)
45AQI (US)
36AQI (US)
47AQI (US)
45AQI (US)
30AQI (US)
31AQI (US)
30AQI (US)
27AQI (US)
29AQI (US)
32AQI (US)
44AQI (US)
48AQI (US)
50AQI (US)
32AQI (US)
26AQI (US)
31AQI (US)
35AQI (US)
33AQI (US)
27AQI (US)
31AQI (US)
25AQI (US)
24AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
36AQI (US)
31AQI (US)
47AQI (US)
26AQI (US)
30AQI (US)
32AQI (US)
30AQI (US)
31AQI (US)
31AQI (US)
29AQI (US)
39AQI (US)
34AQI (US)
28AQI (US)
46AQI (US)
31AQI (US)
38AQI (US)
27AQI (US)
32AQI (US)
35AQI (US)
35AQI (US)
40AQI (US)
34AQI (US)
29AQI (US)
35AQI (US)
35AQI (US)
30AQI (US)
29AQI (US)
28AQI (US)
26AQI (US)
27AQI (US)
32AQI (US)
30AQI (US)
27AQI (US)
33AQI (US)
48AQI (US)
54AQI (US)
37AQI (US)
33AQI (US)
47AQI (US)
35AQI (US)
40AQI (US)
26AQI (US)
30AQI (US)
25AQI (US)
30AQI (US)
33AQI (US)
33AQI (US)
35AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
January47AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202538AQI (US)
Highest AQI (US) recorded in
February60AQI (US)
Lowest AQI (US) recorded in
September20AQI (US)
202414AQI (US)
Highest AQI (US) recorded in
December38AQI (US)
Lowest AQI (US) recorded in
July5AQI (US)
202312AQI (US)
Highest AQI (US) recorded in
February37AQI (US)
Lowest AQI (US) recorded in
July5AQI (US)
202229AQI (US)
Highest AQI (US) recorded in
October42AQI (US)
Lowest AQI (US) recorded in
November22AQI (US)
Most & Least Polluted Years Over the Last 5 Years
Biel Bienne's annual 2026 AQI (US) (33) shows an average percentage change of 77.8% (worsened AQI (US)) compared to previous years: 2022 (29), 2023 (12), 2024 (14), 2025 (38).