Debrecen Kalotaszeg Square, Debrecen, Hajdu Bihar, Hungary 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
Debrecen Kalotaszeg Square, Debrecen, Hajdu Bihar, Hungary
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 46 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
Debrecen Kalotaszeg Square, Debrecen, Hajdu Bihar, Hungary
6 AM2nd Oct 2025
6 PM
5 AM3rd Oct 2025
47AQI
37AQI
53AQI
48AQI
In the last 24 hours,
Debrecen Kalotaszeg Square's AQI reached its highest point of 53 at 4 AM during the Night, while the lowest point, 37, was recorded at 12 PM during the Day between 2nd Oct and 3rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Debrecen Kalotaszeg Square, Debrecen, Hajdu Bihar, Hungary
26°C20/33°C
25°C19/33°C
27°C20/34°C
25°C18/33°C
22°C16/30°C
22°C16/30°C
21°C16/28°C
22°C15/29°C
19°C17/21°C
20°C15/26°C
22°C16/27°C
19°C16/22°C
18°C12/24°C
18°C14/25°C
16°C13/22°C
16°C10/22°C
19°C13/26°C
21°C15/28°C
23°C17/30°C
23°C17/31°C
21°C15/29°C
17°C13/23°C
13°C12/13°C
14°C11/17°C
14°C12/17°C
13°C9/19°C
11°C6/16°C
10°C6/14°C
9°C7/10°C
8°C3/13°C
--°C/°C
43AQI
34AQI
43AQI
36AQI
2025 Days Vs Air Quality
Debrecen Kalotaszeg Square, Debrecen, Hajdu Bihar, Hungary
71%
194
24%
67
5%
14
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 71%
Health Risk Level:
Low
In 2025, 71% of 276 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
Debrecen Kalotaszeg Square, Debrecen, Hajdu Bihar, Hungary
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
78AQI
79AQI
66AQI
55AQI
57AQI
48AQI
47AQI
48AQI
46AQI
45AQI
38AQI
37AQI
45AQI
59AQI
82AQI
85AQI
84AQI
79AQI
70AQI
65AQI
71AQI
72AQI
75AQI
68AQI
80AQI
63AQI
76AQI
57AQI
56AQI
70AQI
88AQI
53AQI
64AQI
62AQI
74AQI
87AQI
97AQI
88AQI
70AQI
108AQI
143AQI
127AQI
120AQI
111AQI
89AQI
65AQI
63AQI
66AQI
77AQI
79AQI
120AQI
108AQI
117AQI
122AQI
102AQI
99AQI
115AQI
98AQI
85AQI
77AQI
67AQI
70AQI
76AQI
104AQI
100AQI
95AQI
93AQI
108AQI
111AQI
66AQI
53AQI
51AQI
42AQI
44AQI
34AQI
45AQI
41AQI
58AQI
64AQI
86AQI
62AQI
60AQI
59AQI
55AQI
57AQI
54AQI
55AQI
48AQI
51AQI
54AQI
48AQI
46AQI
44AQI
44AQI
42AQI
38AQI
43AQI
47AQI
44AQI
45AQI
41AQI
42AQI
49AQI
42AQI
51AQI
49AQI
53AQI
44AQI
40AQI
37AQI
38AQI
40AQI
40AQI
38AQI
45AQI
40AQI
36AQI
33AQI
44AQI
48AQI
40AQI
37AQI
48AQI
40AQI
34AQI
31AQI
31AQI
36AQI
36AQI
34AQI
32AQI
30AQI
32AQI
40AQI
35AQI
25AQI
33AQI
27AQI
22AQI
29AQI
32AQI
36AQI
40AQI
27AQI
25AQI
33AQI
33AQI
31AQI
23AQI
30AQI
31AQI
33AQI
35AQI
48AQI
38AQI
44AQI
46AQI
52AQI
42AQI
40AQI
33AQI
52AQI
38AQI
41AQI
33AQI
36AQI
40AQI
40AQI
38AQI
43AQI
44AQI
36AQI
31AQI
33AQI
32AQI
34AQI
33AQI
35AQI
35AQI
31AQI
32AQI
31AQI
27AQI
31AQI
37AQI
35AQI
37AQI
41AQI
38AQI
33AQI
28AQI
27AQI
31AQI
33AQI
35AQI
33AQI
33AQI
32AQI
31AQI
33AQI
33AQI
34AQI
35AQI
29AQI
27AQI
28AQI
33AQI
34AQI
32AQI
29AQI
28AQI
30AQI
26AQI
27AQI
28AQI
28AQI
29AQI
30AQI
27AQI
30AQI
30AQI
31AQI
37AQI
35AQI
31AQI
37AQI
42AQI
44AQI
49AQI
44AQI
37AQI
35AQI
40AQI
43AQI
40AQI
33AQI
29AQI
29AQI
31AQI
34AQI
37AQI
38AQI
36AQI
38AQI
47AQI
48AQI
45AQI
41AQI
41AQI
37AQI
34AQI
37AQI
39AQI
46AQI
45AQI
42AQI
37AQI
38AQI
34AQI
26AQI
24AQI
25AQI
26AQI
33AQI
30AQI
29AQI
26AQI
21AQI
50AQI
99AQI
39AQI
41AQI
37AQI
39AQI
46AQI
64AQI
93AQI
66AQI
43AQI
33AQI
38AQI
32AQI
34AQI
39AQI
43AQI
No. of days
202549AQI
Highest AQI recorded in
February93AQI
Lowest AQI recorded in
July32AQI
202451AQI
Highest AQI recorded in
November90AQI
Lowest AQI recorded in
January25AQI
202320AQI
Highest AQI recorded in
December21AQI
Lowest AQI recorded in
November13AQI
202227AQI
Highest AQI recorded in
March32AQI
Lowest AQI recorded in
September20AQI
202128AQI
Highest AQI recorded in
July33AQI
Lowest AQI recorded in
December21AQI
202028AQI
Highest AQI recorded in
March41AQI
Lowest AQI recorded in
December20AQI
Most & Least Polluted Years Over the Last 6 Years
Debrecen Kalotaszeg Square's annual 2025 AQI (49) shows an average percentage change of 73.7% (worsened AQI) compared to previous years: 2020 (28), 2021 (28), 2022 (27), 2023 (20), 2024 (51).