Kadan, Ustecky Kraj, Czechia 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
Kadan, Ustecky Kraj, Czechia
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 53 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Kadan, Ustecky Kraj, Czechia
6 AM4th Oct 2025
7 PM
5 AM5th Oct 2025
68AQI
44AQI
76AQI
42AQI
In the last 24 hours,
Kadan's AQI reached its highest point of 76 at 12 AM during the Night, while the lowest point, 42, was recorded at 5 AM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Kadan, Ustecky Kraj, Czechia
16°C13/19°C
15°C12/20°C
15°C11/20°C
16°C11/22°C
17°C12/22°C
16°C14/20°C
15°C11/22°C
14°C10/19°C
14°C10/19°C
13°C9/16°C
15°C9/21°C
14°C12/17°C
14°C10/17°C
17°C13/24°C
19°C14/26°C
19°C14/27°C
20°C15/28°C
11°C9/12°C
10°C8/15°C
10°C7/13°C
7°C5/7°C
10°C8/11°C
12°C9/16°C
12°C8/18°C
10°C7/13°C
9°C5/11°C
7°C4/11°C
8°C4/12°C
8°C5/12°C
7°C4/10°C
--°C/°C
33AQI
26AQI
32AQI
26AQI
2025 Days Vs Air Quality
Kadan, Ustecky Kraj, Czechia
75%
209
20%
55
5%
13
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 75%
Health Risk Level:
Low
In 2025, 75% of 278 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
Kadan, Ustecky Kraj, Czechia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
53AQI
28AQI
26AQI
31AQI
61AQI
67AQI
33AQI
26AQI
29AQI
28AQI
25AQI
32AQI
36AQI
67AQI
40AQI
39AQI
55AQI
78AQI
56AQI
68AQI
75AQI
63AQI
55AQI
41AQI
74AQI
52AQI
50AQI
35AQI
27AQI
57AQI
44AQI
45AQI
50AQI
74AQI
91AQI
90AQI
47AQI
53AQI
98AQI
107AQI
114AQI
112AQI
102AQI
73AQI
92AQI
41AQI
59AQI
77AQI
70AQI
91AQI
101AQI
137AQI
112AQI
149AQI
115AQI
144AQI
88AQI
34AQI
39AQI
39AQI
45AQI
55AQI
61AQI
74AQI
96AQI
100AQI
107AQI
107AQI
110AQI
77AQI
63AQI
37AQI
64AQI
60AQI
56AQI
40AQI
41AQI
60AQI
73AQI
81AQI
69AQI
65AQI
83AQI
86AQI
66AQI
44AQI
63AQI
85AQI
33AQI
24AQI
31AQI
41AQI
48AQI
42AQI
46AQI
25AQI
21AQI
30AQI
34AQI
38AQI
32AQI
38AQI
46AQI
46AQI
45AQI
51AQI
49AQI
34AQI
18AQI
41AQI
24AQI
21AQI
19AQI
36AQI
25AQI
31AQI
31AQI
33AQI
37AQI
38AQI
52AQI
42AQI
45AQI
24AQI
27AQI
24AQI
29AQI
27AQI
28AQI
27AQI
25AQI
30AQI
40AQI
35AQI
29AQI
22AQI
20AQI
17AQI
21AQI
28AQI
30AQI
29AQI
23AQI
22AQI
27AQI
22AQI
23AQI
17AQI
15AQI
17AQI
32AQI
28AQI
26AQI
44AQI
28AQI
21AQI
18AQI
15AQI
19AQI
20AQI
39AQI
39AQI
43AQI
50AQI
44AQI
45AQI
39AQI
34AQI
39AQI
45AQI
37AQI
35AQI
36AQI
41AQI
35AQI
30AQI
30AQI
28AQI
28AQI
27AQI
26AQI
31AQI
40AQI
34AQI
32AQI
34AQI
34AQI
29AQI
23AQI
22AQI
22AQI
22AQI
22AQI
24AQI
30AQI
34AQI
34AQI
28AQI
24AQI
28AQI
43AQI
40AQI
24AQI
17AQI
25AQI
29AQI
31AQI
33AQI
26AQI
28AQI
24AQI
22AQI
23AQI
24AQI
22AQI
22AQI
25AQI
23AQI
25AQI
34AQI
43AQI
51AQI
37AQI
38AQI
47AQI
58AQI
61AQI
59AQI
45AQI
28AQI
27AQI
36AQI
39AQI
28AQI
21AQI
18AQI
20AQI
24AQI
34AQI
48AQI
27AQI
25AQI
21AQI
21AQI
21AQI
19AQI
26AQI
20AQI
18AQI
22AQI
23AQI
31AQI
34AQI
26AQI
19AQI
18AQI
20AQI
16AQI
17AQI
17AQI
18AQI
22AQI
27AQI
43AQI
29AQI
21AQI
22AQI
22AQI
30AQI
42AQI
43AQI
33AQI
30AQI
43AQI
55AQI
54AQI
53AQI
47AQI
86AQI
67AQI
35AQI
27AQI
33AQI
29AQI
33AQI
25AQI
51AQI
No. of days
202542AQI
Highest AQI recorded in
February86AQI
Lowest AQI recorded in
September25AQI
202445AQI
Highest AQI recorded in
March61AQI
Lowest AQI recorded in
April38AQI
202344AQI
Highest AQI recorded in
June52AQI
Lowest AQI recorded in
November30AQI
202248AQI
Highest AQI recorded in
March70AQI
Lowest AQI recorded in
January35AQI
202145AQI
Highest AQI recorded in
June52AQI
Lowest AQI recorded in
August32AQI
202043AQI
Highest AQI recorded in
December71AQI
Lowest AQI recorded in
October35AQI
Most & Least Polluted Years Over the Last 6 Years
Kadan's annual 2025 AQI (42) shows an average percentage change of -6.1% (improved AQI) compared to previous years: 2020 (43), 2021 (45), 2022 (48), 2023 (44), 2024 (45).