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!
July Air Quality Analysis
Ostrava, Moravskoslezsky Kraj, Czechia
AQI Trends: Highest and Lowest
Same Day Analysis (31st July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 26 of Good air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report
2025 Days Vs Air Quality
Ostrava, Moravskoslezsky Kraj, Czechia
57%
121
32%
67
10%
21
1%
3
Total number of days with different AQI categories in last 213 days in 2025 (152 days remaining)
Under WHO’s Safe Air Quality Limits: 57%
Health Risk Level:
Considerable
In 2025, 57% of 213 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
Ostrava, Moravskoslezsky Kraj, Czechia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
76AQI
64AQI
47AQI
38AQI
117AQI
53AQI
56AQI
34AQI
37AQI
25AQI
24AQI
23AQI
44AQI
66AQI
71AQI
63AQI
55AQI
76AQI
73AQI
61AQI
67AQI
83AQI
69AQI
71AQI
58AQI
70AQI
59AQI
58AQI
32AQI
65AQI
72AQI
63AQI
89AQI
105AQI
118AQI
95AQI
82AQI
120AQI
117AQI
155AQI
154AQI
154AQI
140AQI
90AQI
105AQI
93AQI
109AQI
140AQI
121AQI
125AQI
121AQI
106AQI
80AQI
93AQI
123AQI
111AQI
131AQI
111AQI
79AQI
72AQI
58AQI
77AQI
99AQI
82AQI
86AQI
85AQI
107AQI
120AQI
99AQI
57AQI
53AQI
44AQI
60AQI
60AQI
75AQI
68AQI
56AQI
68AQI
73AQI
82AQI
105AQI
51AQI
66AQI
88AQI
108AQI
67AQI
77AQI
99AQI
83AQI
36AQI
70AQI
74AQI
57AQI
66AQI
54AQI
36AQI
29AQI
39AQI
44AQI
28AQI
51AQI
54AQI
58AQI
47AQI
35AQI
34AQI
45AQI
26AQI
20AQI
26AQI
36AQI
44AQI
39AQI
62AQI
54AQI
41AQI
36AQI
38AQI
40AQI
41AQI
42AQI
42AQI
42AQI
35AQI
29AQI
36AQI
42AQI
27AQI
35AQI
35AQI
36AQI
41AQI
49AQI
41AQI
29AQI
20AQI
20AQI
16AQI
17AQI
25AQI
33AQI
36AQI
22AQI
27AQI
29AQI
26AQI
28AQI
29AQI
20AQI
25AQI
32AQI
32AQI
34AQI
34AQI
38AQI
32AQI
25AQI
21AQI
23AQI
22AQI
33AQI
40AQI
41AQI
34AQI
40AQI
48AQI
47AQI
40AQI
45AQI
51AQI
37AQI
32AQI
27AQI
39AQI
35AQI
33AQI
32AQI
31AQI
27AQI
29AQI
27AQI
28AQI
31AQI
44AQI
38AQI
36AQI
37AQI
36AQI
35AQI
27AQI
23AQI
22AQI
24AQI
30AQI
31AQI
37AQI
35AQI
28AQI
29AQI
34AQI
39AQI
47AQI
27AQI
19AQI
25AQI
34AQI
52AQI
46AQI
33AQI
29AQI
28AQI
26AQI
58AQI
112AQI
76AQI
44AQI
31AQI
34AQI
33AQI
No. of days
202555AQI
Highest AQI recorded in
February112AQI
Lowest AQI recorded in
May31AQI
202456AQI
Highest AQI recorded in
December78AQI
Lowest AQI recorded in
July43AQI
202355AQI
Highest AQI recorded in
February69AQI
Lowest AQI recorded in
July44AQI
202266AQI
Highest AQI recorded in
March105AQI
Lowest AQI recorded in
August36AQI
202159AQI
Highest AQI recorded in
December82AQI
Lowest AQI recorded in
August39AQI
202056AQI
Highest AQI recorded in
December122AQI
Lowest AQI recorded in
July45AQI
Most & Least Polluted Years Over the Last 6 Years
Ostrava's annual 2025 AQI (55) shows an average percentage change of -6.02% (improved AQI) compared to previous years: 2020 (56), 2021 (59), 2022 (66), 2023 (55), 2024 (56).
