Ostrava Hrusov, Ostrava, Moravskoslezsky Kraj, Czechia Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Ostrava Hrusov, Ostrava, Moravskoslezsky Kraj, Czechia
AQI Trends: Highest and Lowest
Same Day Analysis (23rd September ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 28 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 23rd Sep - 24th Sep 2025
Ostrava Hrusov, Ostrava, Moravskoslezsky Kraj, Czechia
6 AM23rd Sep 2025
7 PM
5 AM24th Sep 2025
29AQI
23AQI
29AQI
19AQI
In the last 24 hours,
Ostrava Hrusov's AQI reached its highest point of 29 at 2 PM during the Day, while the lowest point, 19, was recorded at 5 AM during the Night between 23rd Sep and 24th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Ostrava Hrusov, Ostrava, Moravskoslezsky Kraj, Czechia
16°C10/22°C
16°C8/24°C
20°C13/28°C
24°C16/31°C
24°C18/31°C
20°C17/24°C
16°C14/18°C
20°C13/28°C
21°C16/28°C
19°C16/23°C
21°C15/27°C
21°C17/27°C
15°C12/18°C
15°C10/21°C
17°C11/24°C
17°C12/24°C
18°C15/25°C
18°C15/23°C
17°C13/21°C
17°C13/23°C
15°C12/16°C
15°C10/21°C
15°C11/19°C
13°C10/17°C
13°C9/18°C
19°C13/25°C
20°C15/28°C
21°C16/28°C
18°C13/24°C
12°C11/13°C
--°C/°C
37AQI
31AQI
38AQI
35AQI
2025 Days Vs Air Quality
Ostrava Hrusov, Ostrava, Moravskoslezsky Kraj, Czechia
64%
169
27%
71
9%
23
1%
3
Total number of days with different AQI categories in last 267 days in 2025 (98 days remaining)
Under WHO’s Safe Air Quality Limits: 64%
Health Risk Level:
Moderate
In 2025, 64% of 267 days were within WHO’s safe air quality limits, and 36% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Ostrava Hrusov, Ostrava, Moravskoslezsky Kraj, Czechia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
79AQI
70AQI
52AQI
41AQI
127AQI
56AQI
59AQI
37AQI
39AQI
25AQI
25AQI
22AQI
45AQI
70AQI
74AQI
66AQI
58AQI
78AQI
77AQI
63AQI
68AQI
86AQI
72AQI
74AQI
62AQI
76AQI
61AQI
63AQI
35AQI
65AQI
76AQI
66AQI
92AQI
108AQI
119AQI
100AQI
85AQI
120AQI
116AQI
154AQI
154AQI
154AQI
142AQI
93AQI
108AQI
96AQI
116AQI
143AQI
123AQI
130AQI
124AQI
108AQI
83AQI
99AQI
124AQI
114AQI
133AQI
114AQI
80AQI
75AQI
60AQI
78AQI
103AQI
85AQI
87AQI
84AQI
111AQI
121AQI
101AQI
62AQI
54AQI
47AQI
65AQI
63AQI
82AQI
75AQI
58AQI
76AQI
80AQI
92AQI
115AQI
59AQI
73AQI
94AQI
120AQI
70AQI
77AQI
99AQI
81AQI
36AQI
70AQI
73AQI
57AQI
69AQI
58AQI
43AQI
34AQI
40AQI
45AQI
28AQI
52AQI
55AQI
62AQI
47AQI
36AQI
35AQI
45AQI
26AQI
21AQI
26AQI
35AQI
43AQI
40AQI
61AQI
56AQI
41AQI
36AQI
38AQI
42AQI
41AQI
41AQI
42AQI
44AQI
35AQI
29AQI
36AQI
43AQI
27AQI
36AQI
37AQI
37AQI
42AQI
49AQI
43AQI
29AQI
21AQI
20AQI
16AQI
17AQI
25AQI
34AQI
36AQI
22AQI
25AQI
30AQI
27AQI
29AQI
30AQI
21AQI
25AQI
32AQI
32AQI
35AQI
35AQI
38AQI
31AQI
26AQI
21AQI
25AQI
23AQI
35AQI
40AQI
40AQI
33AQI
39AQI
49AQI
47AQI
38AQI
45AQI
52AQI
34AQI
31AQI
27AQI
41AQI
33AQI
33AQI
32AQI
31AQI
27AQI
29AQI
26AQI
27AQI
32AQI
45AQI
36AQI
34AQI
37AQI
36AQI
36AQI
25AQI
23AQI
22AQI
23AQI
30AQI
32AQI
37AQI
35AQI
28AQI
29AQI
34AQI
39AQI
46AQI
28AQI
20AQI
25AQI
32AQI
50AQI
46AQI
34AQI
29AQI
28AQI
27AQI
26AQI
25AQI
27AQI
29AQI
33AQI
25AQI
27AQI
33AQI
48AQI
56AQI
49AQI
39AQI
46AQI
56AQI
60AQI
62AQI
51AQI
30AQI
30AQI
37AQI
47AQI
41AQI
25AQI
17AQI
19AQI
28AQI
40AQI
49AQI
49AQI
33AQI
31AQI
42AQI
45AQI
40AQI
41AQI
51AQI
28AQI
26AQI
38AQI
45AQI
49AQI
40AQI
36AQI
35AQI
36AQI
21AQI
21AQI
20AQI
24AQI
27AQI
35AQI
35AQI
35AQI
28AQI
61AQI
114AQI
80AQI
45AQI
32AQI
34AQI
32AQI
38AQI
35AQI
No. of days
202552AQI
Highest AQI recorded in
February114AQI
Lowest AQI recorded in
May32AQI
202457AQI
Highest AQI recorded in
December81AQI
Lowest AQI recorded in
May36AQI
202368AQI
Highest AQI recorded in
November84AQI
Lowest AQI recorded in
December66AQI
202054AQI
Highest AQI recorded in
December130AQI
Lowest AQI recorded in
July42AQI
Most & Least Polluted Years Over the Last 4 Years
Ostrava Hrusov's annual 2025 AQI (52) shows an average percentage change of -11.6% (improved AQI) compared to previous years: 2020 (54), 2023 (68), 2024 (57).