Under, Tanvald, Liberecky 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
Under, Tanvald, Liberecky Kraj, Czechia
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 34 of Good air quality, showing improvement over 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025
Under, Tanvald, Liberecky Kraj, Czechia
4 AM3rd Jul 2025
9 PM
3 AM4th Jul 2025
71AQI
41AQI
50AQI
38AQI
In the last 24 hours,
Under's AQI reached its highest point of 71 at 11 AM during the Day, while the lowest point, 38, was recorded at 3 AM during the Night between 3rd Jul and 4th Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Under, Tanvald, Liberecky Kraj, Czechia
18°C12/25°C
16°C13/21°C
15°C11/21°C
14°C11/18°C
12°C8/16°C
10°C6/14°C
13°C7/19°C
11°C8/14°C
14°C7/21°C
16°C9/22°C
17°C10/24°C
20°C13/27°C
14°C11/17°C
16°C10/22°C
18°C12/24°C
16°C10/20°C
14°C8/19°C
16°C9/22°C
19°C12/26°C
18°C12/25°C
16°C9/22°C
19°C12/26°C
22°C15/29°C
16°C13/21°C
18°C10/25°C
21°C16/26°C
18°C12/23°C
20°C12/27°C
23°C15/30°C
20°C14/24°C
0°C0/0°C
36AQI
30AQI
35AQI
34AQI
2025 Days Vs Air Quality
Under, Tanvald, Liberecky Kraj, Czechia
63%
116
35%
64
2%
3
Total number of days with different AQI categories in last 185 days in 2025 (180 days remaining)
Under WHO’s Safe Air Quality Limits: 63%
Health Risk Level:
Moderate
In 2025, 63% of 185 days were within WHO’s safe air quality limits, and 37% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Under, Tanvald, Liberecky Kraj, Czechia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
65AQI
35AQI
34AQI
35AQI
54AQI
41AQI
46AQI
36AQI
29AQI
32AQI
26AQI
30AQI
41AQI
59AQI
47AQI
45AQI
50AQI
80AQI
94AQI
55AQI
67AQI
74AQI
54AQI
55AQI
48AQI
54AQI
43AQI
43AQI
30AQI
47AQI
51AQI
52AQI
57AQI
67AQI
82AQI
88AQI
47AQI
53AQI
79AQI
81AQI
97AQI
96AQI
82AQI
68AQI
103AQI
59AQI
70AQI
78AQI
87AQI
72AQI
76AQI
83AQI
83AQI
98AQI
105AQI
90AQI
96AQI
58AQI
48AQI
50AQI
52AQI
62AQI
66AQI
70AQI
73AQI
77AQI
76AQI
86AQI
86AQI
105AQI
95AQI
52AQI
65AQI
58AQI
57AQI
40AQI
51AQI
55AQI
61AQI
68AQI
69AQI
59AQI
93AQI
74AQI
79AQI
41AQI
59AQI
87AQI
49AQI
29AQI
35AQI
51AQI
50AQI
46AQI
48AQI
21AQI
25AQI
32AQI
34AQI
42AQI
43AQI
51AQI
43AQI
47AQI
41AQI
40AQI
46AQI
37AQI
22AQI
30AQI
34AQI
27AQI
27AQI
46AQI
35AQI
35AQI
33AQI
32AQI
40AQI
45AQI
59AQI
37AQI
44AQI
24AQI
23AQI
24AQI
28AQI
21AQI
27AQI
29AQI
29AQI
30AQI
34AQI
36AQI
27AQI
21AQI
21AQI
21AQI
21AQI
34AQI
34AQI
32AQI
25AQI
22AQI
25AQI
26AQI
28AQI
26AQI
20AQI
19AQI
27AQI
28AQI
25AQI
48AQI
35AQI
30AQI
20AQI
18AQI
20AQI
24AQI
36AQI
40AQI
43AQI
37AQI
35AQI
41AQI
38AQI
31AQI
41AQI
47AQI
37AQI
29AQI
21AQI
43AQI
33AQI
26AQI
30AQI
33AQI
29AQI
31AQI
28AQI
28AQI
34AQI
48AQI
77AQI
66AQI
38AQI
28AQI
33AQI
31AQI
No. of days
202548AQI
Highest AQI recorded in
February77AQI
Lowest AQI recorded in
May28AQI
202444AQI
Highest AQI recorded in
March56AQI
Lowest AQI recorded in
February38AQI
202344AQI
Highest AQI recorded in
February53AQI
Lowest AQI recorded in
November34AQI
202249AQI
Highest AQI recorded in
March69AQI
Lowest AQI recorded in
August34AQI
202146AQI
Highest AQI recorded in
March56AQI
Lowest AQI recorded in
August35AQI
202045AQI
Highest AQI recorded in
December78AQI
Lowest AQI recorded in
October38AQI
Most & Least Polluted Years Over the Last 6 Years
Under's annual 2025 AQI (48) shows an average percentage change of 4.8% (worsened AQI) compared to previous years: 2020 (45), 2021 (46), 2022 (49), 2023 (44), 2024 (44).