Decin, Ustecky Kraj, Czechia Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Decin, Ustecky Kraj, Czechia
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 38 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Decin, Ustecky Kraj, Czechia
4 AM2nd Jul 2025
9 PM
3 AM3rd Jul 2025
50AQI
32AQI
49AQI
39AQI
In the last 24 hours,
Decin's AQI reached its highest point of 50 at 4 AM during the Day, while the lowest point, 32, was recorded at 6 PM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Decin, Ustecky Kraj, Czechia
17°C10/23°C
18°C12/24°C
18°C13/23°C
17°C11/22°C
16°C13/20°C
14°C8/19°C
12°C7/17°C
14°C7/21°C
12°C9/14°C
15°C8/21°C
17°C10/23°C
18°C10/25°C
20°C13/29°C
15°C12/19°C
18°C11/23°C
19°C14/25°C
17°C11/20°C
15°C9/21°C
17°C10/23°C
20°C13/28°C
20°C13/28°C
17°C10/22°C
21°C15/27°C
23°C16/32°C
17°C14/22°C
20°C12/27°C
22°C17/29°C
19°C13/25°C
21°C13/29°C
24°C16/31°C
0°C0/0°C
40AQI
33AQI
38AQI
37AQI
2025 Days Vs Air Quality
Decin, Ustecky Kraj, Czechia
51%
94
39%
71
10%
18
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 51%
Health Risk Level:
Considerable
In 2025, 51% of 184 days were within WHO’s safe air quality limits, and 49% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Decin, Ustecky Kraj, Czechia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
71AQI
38AQI
42AQI
38AQI
72AQI
73AQI
77AQI
56AQI
42AQI
32AQI
29AQI
32AQI
43AQI
81AQI
66AQI
47AQI
57AQI
91AQI
131AQI
91AQI
76AQI
82AQI
63AQI
72AQI
60AQI
60AQI
63AQI
63AQI
42AQI
70AQI
57AQI
71AQI
70AQI
92AQI
122AQI
136AQI
58AQI
60AQI
87AQI
101AQI
129AQI
117AQI
90AQI
74AQI
100AQI
48AQI
94AQI
94AQI
95AQI
104AQI
104AQI
96AQI
86AQI
130AQI
143AQI
133AQI
89AQI
64AQI
55AQI
57AQI
58AQI
81AQI
86AQI
105AQI
108AQI
113AQI
114AQI
115AQI
123AQI
127AQI
99AQI
47AQI
65AQI
63AQI
67AQI
47AQI
61AQI
72AQI
79AQI
85AQI
79AQI
59AQI
86AQI
86AQI
86AQI
53AQI
62AQI
92AQI
41AQI
33AQI
39AQI
53AQI
59AQI
58AQI
56AQI
21AQI
37AQI
38AQI
46AQI
44AQI
51AQI
65AQI
55AQI
57AQI
49AQI
52AQI
53AQI
38AQI
23AQI
47AQI
40AQI
35AQI
36AQI
49AQI
41AQI
39AQI
35AQI
43AQI
46AQI
51AQI
69AQI
49AQI
51AQI
27AQI
22AQI
24AQI
34AQI
27AQI
32AQI
38AQI
33AQI
30AQI
41AQI
44AQI
34AQI
24AQI
22AQI
19AQI
22AQI
34AQI
42AQI
41AQI
24AQI
26AQI
30AQI
31AQI
28AQI
24AQI
18AQI
22AQI
34AQI
40AQI
33AQI
50AQI
36AQI
28AQI
23AQI
17AQI
23AQI
22AQI
45AQI
37AQI
48AQI
44AQI
37AQI
47AQI
36AQI
37AQI
46AQI
51AQI
40AQI
36AQI
28AQI
47AQI
39AQI
29AQI
37AQI
30AQI
26AQI
33AQI
27AQI
32AQI
38AQI
62AQI
94AQI
79AQI
45AQI
32AQI
36AQI
35AQI
No. of days
202557AQI
Highest AQI recorded in
February94AQI
Lowest AQI recorded in
May32AQI
202455AQI
Highest AQI recorded in
January76AQI
Lowest AQI recorded in
July44AQI
202356AQI
Highest AQI recorded in
February69AQI
Lowest AQI recorded in
July47AQI
202262AQI
Highest AQI recorded in
March88AQI
Lowest AQI recorded in
July49AQI
202160AQI
Highest AQI recorded in
December73AQI
Lowest AQI recorded in
August41AQI
202054AQI
Highest AQI recorded in
March82AQI
Lowest AQI recorded in
July43AQI
Most & Least Polluted Years Over the Last 6 Years
Decin's annual 2025 AQI (57) shows an average percentage change of 0.5% (worsened AQI) compared to previous years: 2020 (54), 2021 (60), 2022 (62), 2023 (56), 2024 (55).