Celje, Celje, Slovenia 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
Celje, Celje, Slovenia
AQI Trends: Highest and Lowest
Same Day Analysis (29th August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 42 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 30th Aug - 31st Aug 2025
Celje, Celje, Slovenia
5 AM30th Aug 2025
8 PM
4 AM31st Aug 2025
41AQI
32AQI
33AQI
20AQI
In the last 24 hours,
Celje's AQI reached its highest point of 41 at 12 PM during the Day, while the lowest point, 20, was recorded at 4 AM during the Night between 30th Aug and 31st Aug 2025.
Day & Night AQI Trend : Aug 2025
Celje, Celje, Slovenia
19°C11/28°C
17°C11/24°C
14°C12/18°C
17°C9/25°C
19°C10/26°C
16°C12/21°C
18°C10/27°C
21°C14/31°C
24°C15/33°C
26°C18/35°C
22°C18/28°C
22°C16/30°C
24°C17/33°C
24°C17/32°C
24°C17/33°C
24°C16/33°C
21°C14/28°C
19°C13/25°C
19°C13/28°C
20°C13/28°C
18°C14/24°C
17°C12/23°C
15°C10/24°C
15°C11/22°C
16°C8/25°C
18°C9/27°C
20°C12/29°C
21°C15/31°C
19°C13/26°C
16°C12/22°C
--°C/°C
42AQI
37AQI
38AQI
38AQI
2025 Days Vs Air Quality
Celje, Celje, Slovenia
59%
141
32%
76
10%
23
0.4%
1
Total number of days with different AQI categories in last 243 days in 2025 (122 days remaining)
Under WHO’s Safe Air Quality Limits: 59%
Health Risk Level:
Considerable
In 2025, 59% of 243 days were within WHO’s safe air quality limits, and 41% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Celje, Celje, Slovenia
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
145AQI
60AQI
43AQI
85AQI
52AQI
31AQI
41AQI
30AQI
27AQI
32AQI
66AQI
104AQI
71AQI
66AQI
102AQI
84AQI
74AQI
84AQI
115AQI
129AQI
146AQI
105AQI
49AQI
53AQI
46AQI
36AQI
27AQI
34AQI
48AQI
69AQI
70AQI
51AQI
89AQI
69AQI
109AQI
130AQI
110AQI
92AQI
142AQI
150AQI
144AQI
140AQI
144AQI
137AQI
69AQI
87AQI
85AQI
72AQI
84AQI
107AQI
120AQI
143AQI
143AQI
147AQI
157AQI
104AQI
82AQI
53AQI
56AQI
67AQI
64AQI
72AQI
71AQI
89AQI
85AQI
77AQI
88AQI
103AQI
61AQI
44AQI
35AQI
28AQI
43AQI
28AQI
40AQI
33AQI
36AQI
61AQI
65AQI
70AQI
44AQI
35AQI
37AQI
46AQI
51AQI
53AQI
53AQI
44AQI
30AQI
39AQI
39AQI
56AQI
51AQI
50AQI
48AQI
27AQI
31AQI
40AQI
52AQI
47AQI
52AQI
51AQI
50AQI
32AQI
42AQI
47AQI
55AQI
28AQI
31AQI
25AQI
37AQI
49AQI
37AQI
43AQI
20AQI
25AQI
33AQI
36AQI
44AQI
45AQI
66AQI
49AQI
48AQI
37AQI
30AQI
22AQI
44AQI
52AQI
44AQI
39AQI
36AQI
38AQI
47AQI
41AQI
42AQI
29AQI
21AQI
19AQI
28AQI
43AQI
41AQI
40AQI
21AQI
27AQI
26AQI
26AQI
21AQI
23AQI
16AQI
21AQI
35AQI
32AQI
31AQI
33AQI
33AQI
32AQI
45AQI
52AQI
42AQI
50AQI
58AQI
72AQI
57AQI
58AQI
55AQI
57AQI
55AQI
47AQI
53AQI
59AQI
52AQI
49AQI
46AQI
57AQI
59AQI
62AQI
67AQI
52AQI
40AQI
41AQI
50AQI
49AQI
48AQI
53AQI
56AQI
56AQI
59AQI
53AQI
48AQI
45AQI
39AQI
45AQI
45AQI
49AQI
41AQI
26AQI
32AQI
23AQI
20AQI
24AQI
29AQI
38AQI
25AQI
23AQI
30AQI
30AQI
30AQI
22AQI
20AQI
18AQI
21AQI
26AQI
26AQI
24AQI
20AQI
23AQI
24AQI
25AQI
25AQI
27AQI
36AQI
53AQI
55AQI
55AQI
54AQI
57AQI
56AQI
55AQI
54AQI
44AQI
36AQI
42AQI
42AQI
35AQI
32AQI
26AQI
24AQI
29AQI
41AQI
46AQI
42AQI
69AQI
108AQI
55AQI
41AQI
35AQI
50AQI
36AQI
38AQI
No. of days
202553AQI
Highest AQI recorded in
February108AQI
Lowest AQI recorded in
May35AQI
202457AQI
Highest AQI recorded in
January96AQI
Lowest AQI recorded in
July37AQI
202353AQI
Highest AQI recorded in
February105AQI
Lowest AQI recorded in
July36AQI
202256AQI
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
January5AQI
202152AQI
Highest AQI recorded in
January85AQI
Lowest AQI recorded in
July13AQI
202047AQI
Highest AQI recorded in
November87AQI
Lowest AQI recorded in
July25AQI
Most & Least Polluted Years Over the Last 6 Years
Celje's annual 2025 AQI (53) shows an average percentage change of 0.8% (worsened AQI) compared to previous years: 2020 (47), 2021 (52), 2022 (56), 2023 (53), 2024 (57).