Roztoky, Stredocesky 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
Roztoky, Stredocesky Kraj, Czechia
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 23 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Roztoky, Stredocesky Kraj, Czechia
5 AM4th Aug 2025
9 PM
4 AM5th Aug 2025
27AQI
20AQI
30AQI
22AQI
In the last 24 hours,
Roztoky's AQI reached its highest point of 30 at 3 AM during the Night, while the lowest point, 20, was recorded at 5 AM during the Day between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Roztoky, Stredocesky Kraj, Czechia
24°C18/30°C
20°C16/25°C
15°C13/20°C
16°C12/20°C
17°C13/22°C
17°C12/23°C
14°C13/17°C
19°C14/25°C
21°C15/29°C
20°C14/28°C
17°C13/24°C
17°C12/22°C
19°C15/24°C
21°C14/27°C
24°C16/32°C
21°C15/31°C
19°C14/23°C
20°C15/25°C
19°C15/25°C
21°C15/26°C
19°C16/23°C
19°C16/24°C
18°C16/21°C
17°C14/21°C
16°C11/20°C
17°C12/22°C
17°C12/22°C
17°C12/22°C
17°C14/21°C
16°C13/19°C
--°C/°C
34AQI
31AQI
31AQI
29AQI
2025 Days Vs Air Quality
Roztoky, Stredocesky Kraj, Czechia
58%
124
42%
91
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 58%
Health Risk Level:
Considerable
In 2025, 58% of 217 days were within WHO’s safe air quality limits, and 42% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Roztoky, Stredocesky Kraj, Czechia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
76AQI
61AQI
54AQI
50AQI
57AQI
62AQI
57AQI
50AQI
44AQI
39AQI
37AQI
36AQI
41AQI
58AQI
56AQI
54AQI
55AQI
64AQI
69AQI
67AQI
66AQI
70AQI
62AQI
59AQI
58AQI
57AQI
54AQI
52AQI
45AQI
53AQI
55AQI
55AQI
59AQI
69AQI
76AQI
77AQI
66AQI
63AQI
72AQI
76AQI
80AQI
80AQI
79AQI
74AQI
76AQI
68AQI
72AQI
71AQI
72AQI
82AQI
78AQI
80AQI
77AQI
90AQI
89AQI
91AQI
75AQI
62AQI
56AQI
55AQI
55AQI
59AQI
65AQI
70AQI
76AQI
84AQI
88AQI
86AQI
83AQI
69AQI
66AQI
61AQI
60AQI
57AQI
55AQI
51AQI
52AQI
58AQI
61AQI
66AQI
65AQI
64AQI
68AQI
70AQI
67AQI
58AQI
61AQI
67AQI
56AQI
48AQI
47AQI
48AQI
53AQI
53AQI
50AQI
28AQI
27AQI
30AQI
41AQI
40AQI
45AQI
47AQI
50AQI
53AQI
49AQI
51AQI
53AQI
42AQI
28AQI
39AQI
37AQI
32AQI
32AQI
34AQI
33AQI
37AQI
36AQI
39AQI
46AQI
49AQI
63AQI
52AQI
54AQI
34AQI
33AQI
30AQI
35AQI
30AQI
32AQI
32AQI
29AQI
32AQI
38AQI
41AQI
38AQI
26AQI
28AQI
20AQI
22AQI
30AQI
37AQI
39AQI
33AQI
34AQI
34AQI
31AQI
30AQI
26AQI
21AQI
24AQI
34AQI
37AQI
35AQI
40AQI
36AQI
30AQI
24AQI
20AQI
21AQI
24AQI
37AQI
41AQI
51AQI
51AQI
41AQI
47AQI
42AQI
40AQI
44AQI
49AQI
45AQI
44AQI
42AQI
45AQI
43AQI
36AQI
38AQI
36AQI
36AQI
35AQI
34AQI
36AQI
43AQI
42AQI
39AQI
38AQI
41AQI
35AQI
26AQI
28AQI
27AQI
27AQI
25AQI
29AQI
34AQI
36AQI
39AQI
32AQI
30AQI
32AQI
41AQI
45AQI
32AQI
25AQI
30AQI
34AQI
38AQI
37AQI
36AQI
34AQI
29AQI
26AQI
23AQI
25AQI
23AQI
55AQI
74AQI
65AQI
42AQI
34AQI
38AQI
34AQI
24AQI
No. of days
202548AQI
Highest AQI recorded in
February74AQI
Lowest AQI recorded in
August24AQI
202437AQI
Highest AQI recorded in
November54AQI
Lowest AQI recorded in
February32AQI
202335AQI
Highest AQI recorded in
July38AQI
Lowest AQI recorded in
October31AQI
202234AQI
Highest AQI recorded in
May37AQI
Lowest AQI recorded in
January28AQI
202128AQI
Highest AQI recorded in
June34AQI
Lowest AQI recorded in
August24AQI
202027AQI
Highest AQI recorded in
March35AQI
Lowest AQI recorded in
October20AQI
Most & Least Polluted Years Over the Last 6 Years
Roztoky's annual 2025 AQI (48) shows an average percentage change of 51.5% (worsened AQI) compared to previous years: 2020 (27), 2021 (28), 2022 (34), 2023 (35), 2024 (37).