Bilecik, Bilecik Province, Turkey 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
Bilecik, Bilecik Province, Turkey
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 67 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Bilecik, Bilecik Province, Turkey
6 AM29th Sep 2025
7 PM
5 AM30th Sep 2025
AQI
AQI
67AQI
39AQI
In the last 24 hours,
Bilecik's AQI reached its highest point of 67 at 1 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Bilecik, Bilecik Province, Turkey
27°C18/36°C
23°C17/32°C
23°C16/30°C
22°C16/31°C
23°C15/33°C
23°C16/34°C
17°C13/23°C
18°C13/24°C
18°C11/25°C
18°C11/27°C
20°C13/29°C
20°C12/29°C
20°C11/31°C
17°C10/27°C
18°C9/29°C
17°C11/26°C
17°C11/27°C
19°C10/30°C
15°C10/18°C
13°C6/22°C
13°C5/23°C
15°C5/27°C
18°C8/31°C
18°C10/30°C
18°C10/29°C
17°C10/25°C
15°C8/23°C
13°C5/21°C
11°C3/22°C
--°C/°C
--°C/°C
62AQI
59AQI
60AQI
56AQI
2025 Days Vs Air Quality
Bilecik, Bilecik Province, Turkey
28%
75
68%
183
5%
13
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 28%
Health Risk Level:
Very high
In 2025, 28% of 272 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Bilecik, Bilecik Province, Turkey
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
77AQI
78AQI
83AQI
68AQI
61AQI
65AQI
81AQI
80AQI
77AQI
109AQI
93AQI
84AQI
68AQI
56AQI
59AQI
62AQI
57AQI
92AQI
98AQI
106AQI
97AQI
89AQI
93AQI
97AQI
103AQI
75AQI
79AQI
89AQI
80AQI
94AQI
110AQI
110AQI
108AQI
116AQI
111AQI
61AQI
56AQI
59AQI
60AQI
54AQI
57AQI
59AQI
64AQI
59AQI
57AQI
66AQI
63AQI
58AQI
64AQI
62AQI
56AQI
56AQI
56AQI
58AQI
59AQI
60AQI
80AQI
96AQI
99AQI
104AQI
78AQI
70AQI
65AQI
68AQI
69AQI
61AQI
82AQI
88AQI
93AQI
98AQI
100AQI
67AQI
82AQI
116AQI
103AQI
101AQI
107AQI
95AQI
85AQI
86AQI
86AQI
81AQI
68AQI
67AQI
68AQI
66AQI
71AQI
73AQI
68AQI
52AQI
56AQI
57AQI
62AQI
55AQI
56AQI
35AQI
40AQI
43AQI
45AQI
46AQI
46AQI
55AQI
59AQI
50AQI
48AQI
59AQI
54AQI
55AQI
66AQI
52AQI
53AQI
61AQI
56AQI
42AQI
62AQI
48AQI
48AQI
51AQI
47AQI
52AQI
58AQI
57AQI
54AQI
43AQI
43AQI
51AQI
51AQI
62AQI
56AQI
57AQI
56AQI
50AQI
38AQI
39AQI
42AQI
43AQI
40AQI
40AQI
35AQI
37AQI
33AQI
36AQI
41AQI
44AQI
44AQI
40AQI
39AQI
38AQI
43AQI
41AQI
43AQI
49AQI
42AQI
40AQI
39AQI
40AQI
49AQI
45AQI
45AQI
41AQI
42AQI
46AQI
50AQI
50AQI
43AQI
39AQI
36AQI
40AQI
42AQI
46AQI
44AQI
39AQI
36AQI
37AQI
38AQI
40AQI
42AQI
40AQI
37AQI
35AQI
32AQI
50AQI
51AQI
41AQI
48AQI
49AQI
55AQI
58AQI
58AQI
57AQI
64AQI
57AQI
56AQI
56AQI
56AQI
56AQI
55AQI
56AQI
58AQI
59AQI
50AQI
60AQI
51AQI
62AQI
67AQI
67AQI
61AQI
58AQI
68AQI
70AQI
69AQI
67AQI
60AQI
58AQI
57AQI
55AQI
57AQI
60AQI
65AQI
60AQI
65AQI
65AQI
63AQI
62AQI
64AQI
66AQI
64AQI
62AQI
61AQI
61AQI
61AQI
56AQI
57AQI
60AQI
62AQI
61AQI
54AQI
53AQI
48AQI
51AQI
57AQI
64AQI
68AQI
60AQI
59AQI
61AQI
69AQI
64AQI
60AQI
57AQI
55AQI
53AQI
56AQI
61AQI
61AQI
61AQI
62AQI
61AQI
59AQI
55AQI
46AQI
39AQI
41AQI
42AQI
48AQI
51AQI
56AQI
78AQI
62AQI
54AQI
67AQI
83AQI
70AQI
81AQI
52AQI
45AQI
41AQI
58AQI
60AQI
57AQI
No. of days
202561AQI
Highest AQI recorded in
January83AQI
Lowest AQI recorded in
June41AQI
202460AQI
Highest AQI recorded in
December78AQI
Lowest AQI recorded in
August47AQI
202355AQI
Highest AQI recorded in
December70AQI
Lowest AQI recorded in
July46AQI
202247AQI
Highest AQI recorded in
January63AQI
Lowest AQI recorded in
May33AQI
202149AQI
Highest AQI recorded in
November65AQI
Lowest AQI recorded in
June32AQI
202044AQI
Highest AQI recorded in
November81AQI
Lowest AQI recorded in
June29AQI
Most & Least Polluted Years Over the Last 6 Years
Bilecik's annual 2025 AQI (61) shows an average percentage change of 21.3% (worsened AQI) compared to previous years: 2020 (44), 2021 (49), 2022 (47), 2023 (55), 2024 (60).