Olomouc Hejcin, Olomouc, Olomoucky 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
Olomouc Hejcin, Olomouc, Olomoucky 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 36 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: 2nd Jul - 3rd Jul 2025
Olomouc Hejcin, Olomouc, Olomoucky Kraj, Czechia
4 AM2nd Jul 2025
9 PM
3 AM3rd Jul 2025
54AQI
27AQI
37AQI
32AQI
In the last 24 hours,
Olomouc Hejcin's AQI reached its highest point of 54 at 8 AM during the Day, while the lowest point, 27, was recorded at 11 AM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Olomouc Hejcin, Olomouc, Olomoucky Kraj, Czechia
18°C14/22°C
20°C14/26°C
19°C15/25°C
19°C13/25°C
17°C14/20°C
15°C11/17°C
13°C8/18°C
15°C7/22°C
14°C9/18°C
15°C7/22°C
15°C9/20°C
17°C9/24°C
19°C12/26°C
16°C14/21°C
17°C11/24°C
19°C12/26°C
19°C12/24°C
15°C9/22°C
16°C8/22°C
19°C10/26°C
19°C13/29°C
19°C12/25°C
21°C14/28°C
23°C17/31°C
20°C15/26°C
19°C12/25°C
23°C16/29°C
21°C14/27°C
19°C11/27°C
22°C13/30°C
0°C0/0°C
41AQI
31AQI
36AQI
34AQI
2025 Days Vs Air Quality
Olomouc Hejcin, Olomouc, Olomoucky Kraj, Czechia
56%
103
36%
66
8%
14
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 56%
Health Risk Level:
Considerable
In 2025, 56% of 184 days were within WHO’s safe air quality limits, and 44% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Olomouc Hejcin, Olomouc, Olomoucky Kraj, Czechia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
83AQI
79AQI
59AQI
35AQI
77AQI
82AQI
93AQI
42AQI
44AQI
28AQI
24AQI
27AQI
36AQI
79AQI
91AQI
77AQI
58AQI
76AQI
77AQI
55AQI
62AQI
87AQI
67AQI
73AQI
76AQI
72AQI
62AQI
55AQI
33AQI
61AQI
68AQI
64AQI
55AQI
82AQI
98AQI
134AQI
83AQI
89AQI
79AQI
77AQI
120AQI
150AQI
96AQI
99AQI
93AQI
67AQI
61AQI
83AQI
85AQI
91AQI
104AQI
109AQI
94AQI
129AQI
144AQI
143AQI
148AQI
147AQI
76AQI
69AQI
56AQI
75AQI
98AQI
110AQI
115AQI
100AQI
107AQI
115AQI
88AQI
55AQI
57AQI
32AQI
48AQI
55AQI
51AQI
53AQI
46AQI
70AQI
87AQI
95AQI
85AQI
46AQI
67AQI
73AQI
85AQI
47AQI
65AQI
79AQI
80AQI
31AQI
50AQI
60AQI
50AQI
48AQI
54AQI
30AQI
27AQI
37AQI
36AQI
30AQI
43AQI
38AQI
47AQI
49AQI
37AQI
42AQI
45AQI
26AQI
18AQI
23AQI
43AQI
34AQI
34AQI
51AQI
29AQI
35AQI
30AQI
36AQI
46AQI
41AQI
38AQI
40AQI
49AQI
33AQI
25AQI
33AQI
37AQI
27AQI
30AQI
30AQI
28AQI
35AQI
37AQI
42AQI
34AQI
23AQI
20AQI
17AQI
19AQI
22AQI
37AQI
33AQI
23AQI
26AQI
30AQI
27AQI
29AQI
30AQI
19AQI
30AQI
37AQI
32AQI
38AQI
34AQI
33AQI
30AQI
28AQI
21AQI
20AQI
21AQI
35AQI
41AQI
41AQI
32AQI
32AQI
43AQI
42AQI
35AQI
41AQI
53AQI
33AQI
26AQI
21AQI
44AQI
43AQI
37AQI
35AQI
32AQI
26AQI
31AQI
32AQI
32AQI
36AQI
63AQI
100AQI
72AQI
39AQI
30AQI
34AQI
34AQI
No. of days
202556AQI
Highest AQI recorded in
February100AQI
Lowest AQI recorded in
May30AQI
202455AQI
Highest AQI recorded in
January74AQI
Lowest AQI recorded in
May43AQI
202350AQI
Highest AQI recorded in
February64AQI
Lowest AQI recorded in
November41AQI
202256AQI
Highest AQI recorded in
March83AQI
Lowest AQI recorded in
August27AQI
202155AQI
Highest AQI recorded in
December79AQI
Lowest AQI recorded in
May38AQI
202052AQI
Highest AQI recorded in
December85AQI
Lowest AQI recorded in
June41AQI
Most & Least Polluted Years Over the Last 6 Years
Olomouc Hejcin's annual 2025 AQI (56) shows an average percentage change of 3.3% (worsened AQI) compared to previous years: 2020 (52), 2021 (55), 2022 (56), 2023 (50), 2024 (55).