Usti Nad Labem, Ustecky Kraj, Czechia Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Usti Nad Labem, Ustecky Kraj, Czechia
AQI Trends: Highest and Lowest
Same Day Analysis (17th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 45 of Good air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Aug - 18th Aug 2025
Usti Nad Labem, Ustecky Kraj, Czechia
5 AM17th Aug 2025
8 PM
4 AM18th Aug 2025
47AQI
31AQI
51AQI
25AQI
In the last 24 hours,
Usti Nad Labem's AQI reached its highest point of 51 at 1 AM during the Night, while the lowest point, 25, was recorded at 4 AM during the Night between 17th Aug and 18th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Usti Nad Labem, Ustecky Kraj, Czechia
20°C14/25°C
22°C17/29°C
19°C13/25°C
17°C13/21°C
18°C14/23°C
18°C14/25°C
19°C15/24°C
18°C14/20°C
18°C14/22°C
15°C12/17°C
16°C12/20°C
15°C11/19°C
15°C12/21°C
16°C11/22°C
16°C12/22°C
15°C11/19°C
15°C12/20°C
17°C13/25°C
15°C11/20°C
17°C11/24°C
21°C15/27°C
23°C17/29°C
20°C16/23°C
19°C13/26°C
20°C14/27°C
23°C15/31°C
26°C20/33°C
26°C21/34°C
21°C17/25°C
16°C12/21°C
--°C/°C
43AQI
35AQI
37AQI
37AQI
2025 Days Vs Air Quality
Usti Nad Labem, Ustecky Kraj, Czechia
61%
139
35%
81
4%
9
Total number of days with different AQI categories in last 230 days in 2025 (135 days remaining)
Under WHO’s Safe Air Quality Limits: 61%
Health Risk Level:
Moderate
In 2025, 61% of 230 days were within WHO’s safe air quality limits, and 39% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Usti Nad Labem, Ustecky Kraj, Czechia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
70AQI
44AQI
42AQI
43AQI
65AQI
72AQI
61AQI
44AQI
49AQI
39AQI
38AQI
40AQI
46AQI
76AQI
55AQI
49AQI
60AQI
80AQI
111AQI
77AQI
76AQI
71AQI
63AQI
66AQI
67AQI
64AQI
60AQI
55AQI
41AQI
64AQI
57AQI
63AQI
60AQI
85AQI
106AQI
111AQI
53AQI
59AQI
84AQI
93AQI
97AQI
94AQI
84AQI
72AQI
89AQI
56AQI
66AQI
72AQI
72AQI
82AQI
90AQI
101AQI
89AQI
130AQI
137AQI
136AQI
87AQI
55AQI
52AQI
51AQI
57AQI
66AQI
70AQI
93AQI
97AQI
102AQI
95AQI
95AQI
102AQI
97AQI
84AQI
49AQI
64AQI
61AQI
56AQI
44AQI
49AQI
63AQI
71AQI
73AQI
64AQI
63AQI
82AQI
85AQI
77AQI
51AQI
64AQI
80AQI
43AQI
39AQI
46AQI
51AQI
54AQI
51AQI
48AQI
20AQI
24AQI
32AQI
45AQI
44AQI
50AQI
56AQI
53AQI
55AQI
48AQI
55AQI
54AQI
36AQI
22AQI
43AQI
35AQI
29AQI
29AQI
44AQI
41AQI
34AQI
34AQI
39AQI
44AQI
46AQI
62AQI
51AQI
52AQI
28AQI
23AQI
26AQI
32AQI
25AQI
31AQI
34AQI
29AQI
32AQI
39AQI
42AQI
34AQI
22AQI
21AQI
18AQI
20AQI
35AQI
42AQI
38AQI
26AQI
24AQI
30AQI
30AQI
29AQI
24AQI
17AQI
21AQI
35AQI
39AQI
35AQI
52AQI
38AQI
27AQI
21AQI
16AQI
23AQI
24AQI
46AQI
41AQI
50AQI
47AQI
37AQI
47AQI
36AQI
37AQI
47AQI
50AQI
41AQI
41AQI
40AQI
47AQI
37AQI
32AQI
36AQI
31AQI
28AQI
32AQI
29AQI
31AQI
39AQI
44AQI
36AQI
34AQI
37AQI
35AQI
25AQI
25AQI
23AQI
22AQI
22AQI
32AQI
40AQI
42AQI
36AQI
29AQI
24AQI
32AQI
43AQI
47AQI
32AQI
26AQI
33AQI
40AQI
39AQI
32AQI
34AQI
31AQI
28AQI
25AQI
26AQI
27AQI
23AQI
24AQI
26AQI
25AQI
29AQI
42AQI
50AQI
57AQI
41AQI
41AQI
49AQI
59AQI
62AQI
59AQI
45AQI
60AQI
85AQI
71AQI
42AQI
31AQI
37AQI
33AQI
40AQI
No. of days
202550AQI
Highest AQI recorded in
February85AQI
Lowest AQI recorded in
May31AQI
202448AQI
Highest AQI recorded in
November64AQI
Lowest AQI recorded in
July38AQI
202346AQI
Highest AQI recorded in
February62AQI
Lowest AQI recorded in
November37AQI
202256AQI
Highest AQI recorded in
December75AQI
Lowest AQI recorded in
August28AQI
202151AQI
Highest AQI recorded in
December70AQI
Lowest AQI recorded in
August35AQI
202045AQI
Highest AQI recorded in
December87AQI
Lowest AQI recorded in
July35AQI
Most & Least Polluted Years Over the Last 6 Years
Usti Nad Labem's annual 2025 AQI (50) shows an average percentage change of 2.2% (worsened AQI) compared to previous years: 2020 (45), 2021 (51), 2022 (56), 2023 (46), 2024 (48).