Bielsko Biala, Slaskie, Poland 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
Bielsko Biala, Slaskie, Poland
AQI Trends: Highest and Lowest
Same Day Analysis (15th September ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 3rd highest AQI at 22 of Good air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 16th Sep - 17th Sep 2025
Bielsko Biala, Slaskie, Poland
6 AM16th Sep 2025
7 PM
5 AM17th Sep 2025
23AQI
18AQI
21AQI
19AQI
In the last 24 hours,
Bielsko Biala's AQI reached its highest point of 23 at 10 AM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 16th Sep and 17th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Bielsko Biala, Slaskie, Poland
15°C10/19°C
16°C10/23°C
19°C12/26°C
17°C12/21°C
16°C10/19°C
12°C9/16°C
12°C6/18°C
14°C9/20°C
15°C8/22°C
19°C12/26°C
22°C16/29°C
23°C17/30°C
20°C16/25°C
16°C15/18°C
20°C13/27°C
20°C14/27°C
17°C15/22°C
20°C14/27°C
20°C15/28°C
15°C11/15°C
14°C9/19°C
16°C11/23°C
17°C11/22°C
18°C13/24°C
16°C13/20°C
16°C12/22°C
17°C13/23°C
14°C10/16°C
15°C10/21°C
14°C9/17°C
--°C/°C
38AQI
33AQI
38AQI
33AQI
2025 Days Vs Air Quality
Bielsko Biala, Slaskie, Poland
60%
156
29%
74
10%
27
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: 60%
Health Risk Level:
Moderate
In 2025, 60% of 260 days were within WHO’s safe air quality limits, and 40% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Bielsko Biala, Slaskie, Poland
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
72AQI
61AQI
55AQI
53AQI
86AQI
54AQI
57AQI
45AQI
46AQI
36AQI
30AQI
31AQI
52AQI
76AQI
66AQI
81AQI
79AQI
116AQI
124AQI
128AQI
123AQI
151AQI
116AQI
77AQI
68AQI
62AQI
63AQI
63AQI
40AQI
66AQI
80AQI
78AQI
96AQI
112AQI
111AQI
111AQI
89AQI
98AQI
109AQI
131AQI
141AQI
150AQI
142AQI
103AQI
103AQI
107AQI
107AQI
115AQI
131AQI
125AQI
124AQI
106AQI
102AQI
105AQI
113AQI
101AQI
112AQI
93AQI
84AQI
90AQI
69AQI
74AQI
95AQI
82AQI
72AQI
81AQI
95AQI
97AQI
79AQI
59AQI
62AQI
54AQI
58AQI
47AQI
59AQI
72AQI
79AQI
78AQI
72AQI
77AQI
85AQI
69AQI
66AQI
77AQI
88AQI
77AQI
69AQI
86AQI
88AQI
60AQI
76AQI
81AQI
68AQI
67AQI
64AQI
41AQI
43AQI
49AQI
54AQI
41AQI
53AQI
57AQI
52AQI
47AQI
37AQI
35AQI
46AQI
31AQI
23AQI
30AQI
40AQI
44AQI
44AQI
53AQI
50AQI
38AQI
41AQI
44AQI
46AQI
45AQI
45AQI
46AQI
45AQI
36AQI
33AQI
32AQI
40AQI
34AQI
39AQI
44AQI
39AQI
40AQI
44AQI
45AQI
36AQI
30AQI
34AQI
22AQI
25AQI
30AQI
35AQI
39AQI
34AQI
36AQI
35AQI
34AQI
35AQI
33AQI
26AQI
29AQI
31AQI
32AQI
35AQI
31AQI
32AQI
35AQI
28AQI
36AQI
31AQI
27AQI
30AQI
38AQI
38AQI
41AQI
40AQI
48AQI
51AQI
41AQI
42AQI
48AQI
42AQI
39AQI
37AQI
39AQI
36AQI
33AQI
33AQI
31AQI
29AQI
30AQI
30AQI
30AQI
29AQI
32AQI
35AQI
35AQI
38AQI
42AQI
32AQI
28AQI
28AQI
26AQI
26AQI
28AQI
28AQI
35AQI
34AQI
32AQI
33AQI
34AQI
36AQI
42AQI
26AQI
20AQI
25AQI
37AQI
54AQI
53AQI
31AQI
30AQI
30AQI
29AQI
26AQI
28AQI
28AQI
27AQI
33AQI
27AQI
26AQI
33AQI
47AQI
55AQI
48AQI
42AQI
47AQI
56AQI
58AQI
61AQI
54AQI
33AQI
29AQI
36AQI
48AQI
42AQI
26AQI
17AQI
20AQI
27AQI
37AQI
48AQI
46AQI
35AQI
31AQI
37AQI
44AQI
42AQI
41AQI
51AQI
35AQI
28AQI
37AQI
38AQI
45AQI
35AQI
34AQI
37AQI
34AQI
22AQI
73AQI
111AQI
75AQI
48AQI
36AQI
36AQI
33AQI
38AQI
37AQI
No. of days
202554AQI
Highest AQI recorded in
February111AQI
Lowest AQI recorded in
July33AQI
202450AQI
Highest AQI recorded in
December75AQI
Lowest AQI recorded in
June37AQI
202337AQI
Highest AQI recorded in
February48AQI
Lowest AQI recorded in
August29AQI
202251AQI
Highest AQI recorded in
November58AQI
Lowest AQI recorded in
October39AQI
202141AQI
Highest AQI recorded in
February63AQI
Lowest AQI recorded in
August27AQI
202038AQI
Highest AQI recorded in
March55AQI
Lowest AQI recorded in
September29AQI
Most & Least Polluted Years Over the Last 6 Years
Bielsko Biala's annual 2025 AQI (54) shows an average percentage change of 27.3% (worsened AQI) compared to previous years: 2020 (38), 2021 (41), 2022 (51), 2023 (37), 2024 (50).