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!
June Air Quality Analysis
Decin, Ustecky Kraj, Czechia
AQI Trends: Highest and Lowest
Same Day Analysis (3rd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 24 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Jun - 4th Jun 2026
Decin, Ustecky Kraj, Czechia
5 AM3rd Jun 2026
8 PM
4 AM4th Jun 2026
35AQI
8AQI
27AQI
18AQI
In the last 24 hours,
Decin's AQI reached its highest point of 35 at 6 AM during the Day, while the lowest point, 8, was recorded at 1 PM during the Day between 3rd Jun and 4th Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Decin, Ustecky Kraj, Czechia
14°C10/20°C
9°C7/13°C
9°C7/11°C
10°C4/16°C
12°C5/20°C
11°C6/18°C
6°C3/10°C
7°C1/11°C
9°C6/14°C
9°C3/14°C
8°C3/13°C
10°C2/16°C
11°C4/17°C
12°C6/18°C
13°C9/17°C
13°C8/19°C
16°C9/21°C
19°C11/26°C
20°C14/27°C
18°C12/24°C
20°C13/27°C
17°C9/22°C
13°C6/19°C
16°C7/23°C
17°C12/22°C
16°C11/24°C
16°C12/20°C
16°C10/23°C
15°C11/19°C
15°C8/23°C
33AQI
23AQI
34AQI
27AQI
2026 Days Vs Air Quality
Decin, Ustecky Kraj, Czechia
57%
86
36%
55
7%
10
Total number of days with different AQI categories in last 155 days in 2026 (210 days remaining)
Under WHO’s Safe Air Quality Limits: 57%
Health Risk Level:
Considerable
In 2026, 57% of 155 days were within WHO’s safe air quality limits, and 43% 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 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI (US)
17AQI (US)
20AQI (US)
27AQI (US)
42AQI (US)
87AQI (US)
103AQI (US)
85AQI (US)
71AQI (US)
63AQI (US)
42AQI (US)
83AQI (US)
97AQI (US)
103AQI (US)
126AQI (US)
88AQI (US)
45AQI (US)
38AQI (US)
38AQI (US)
61AQI (US)
70AQI (US)
114AQI (US)
116AQI (US)
114AQI (US)
147AQI (US)
73AQI (US)
68AQI (US)
72AQI (US)
76AQI (US)
81AQI (US)
80AQI (US)
90AQI (US)
89AQI (US)
66AQI (US)
61AQI (US)
90AQI (US)
77AQI (US)
63AQI (US)
54AQI (US)
66AQI (US)
56AQI (US)
40AQI (US)
44AQI (US)
21AQI (US)
30AQI (US)
14AQI (US)
51AQI (US)
101AQI (US)
38AQI (US)
62AQI (US)
69AQI (US)
82AQI (US)
63AQI (US)
15AQI (US)
16AQI (US)
51AQI (US)
78AQI (US)
72AQI (US)
76AQI (US)
75AQI (US)
64AQI (US)
77AQI (US)
94AQI (US)
64AQI (US)
95AQI (US)
105AQI (US)
101AQI (US)
86AQI (US)
81AQI (US)
100AQI (US)
42AQI (US)
46AQI (US)
44AQI (US)
16AQI (US)
27AQI (US)
31AQI (US)
63AQI (US)
97AQI (US)
88AQI (US)
60AQI (US)
54AQI (US)
68AQI (US)
76AQI (US)
54AQI (US)
17AQI (US)
26AQI (US)
41AQI (US)
15AQI (US)
33AQI (US)
14AQI (US)
29AQI (US)
50AQI (US)
66AQI (US)
55AQI (US)
45AQI (US)
19AQI (US)
29AQI (US)
35AQI (US)
29AQI (US)
42AQI (US)
49AQI (US)
64AQI (US)
48AQI (US)
51AQI (US)
28AQI (US)
49AQI (US)
41AQI (US)
43AQI (US)
9AQI (US)
30AQI (US)
25AQI (US)
30AQI (US)
39AQI (US)
19AQI (US)
23AQI (US)
21AQI (US)
27AQI (US)
29AQI (US)
49AQI (US)
39AQI (US)
38AQI (US)
36AQI (US)
30AQI (US)
19AQI (US)
15AQI (US)
19AQI (US)
32AQI (US)
26AQI (US)
22AQI (US)
16AQI (US)
15AQI (US)
27AQI (US)
38AQI (US)
43AQI (US)
31AQI (US)
33AQI (US)
34AQI (US)
40AQI (US)
37AQI (US)
35AQI (US)
47AQI (US)
48AQI (US)
40AQI (US)
34AQI (US)
35AQI (US)
22AQI (US)
29AQI (US)
25AQI (US)
18AQI (US)
19AQI (US)
24AQI (US)
73AQI (US)
58AQI (US)
60AQI (US)
37AQI (US)
32AQI (US)
20AQI (US)
No. of days
202652AQI (US)
Highest AQI (US) recorded in
January73AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
202552AQI (US)
Highest AQI (US) recorded in
February94AQI (US)
Lowest AQI (US) recorded in
September30AQI (US)
202455AQI (US)
Highest AQI (US) recorded in
January76AQI (US)
Lowest AQI (US) recorded in
July44AQI (US)
202355AQI (US)
Highest AQI (US) recorded in
February69AQI (US)
Lowest AQI (US) recorded in
July47AQI (US)
202262AQI (US)
Highest AQI (US) recorded in
March88AQI (US)
Lowest AQI (US) recorded in
September49AQI (US)
202160AQI (US)
Highest AQI (US) recorded in
December73AQI (US)
Lowest AQI (US) recorded in
August41AQI (US)
202054AQI (US)
Highest AQI (US) recorded in
March82AQI (US)
Lowest AQI (US) recorded in
July43AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Decin's annual 2026 AQI (US) (52) shows an average percentage change of -7.3% (improved AQI (US)) compared to previous years: 2020 (54), 2021 (60), 2022 (62), 2023 (55), 2024 (55), 2025 (52).