Devnya, Varna, Bulgaria Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Devnya, Varna, Bulgaria
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 29 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Devnya, Varna, Bulgaria
6 AM4th Oct 2025
7 PM
5 AM5th Oct 2025
34AQI
16AQI
67AQI
15AQI
In the last 24 hours,
Devnya's AQI reached its highest point of 67 at 1 AM during the Night, while the lowest point, 15, was recorded at 6 AM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Devnya, Varna, Bulgaria
22°C18/27°C
21°C16/26°C
21°C16/27°C
21°C16/27°C
22°C17/28°C
22°C18/26°C
21°C17/25°C
21°C20/24°C
21°C19/25°C
19°C17/22°C
19°C15/24°C
21°C17/26°C
19°C15/25°C
18°C13/23°C
18°C12/24°C
20°C16/25°C
20°C16/24°C
19°C16/22°C
19°C16/23°C
19°C15/23°C
17°C13/21°C
16°C14/19°C
15°C12/18°C
14°C10/18°C
15°C13/17°C
15°C11/20°C
14°C10/18°C
13°C11/15°C
15°C9/18°C
10°C9/13°C
--°C/°C
36AQI
36AQI
40AQI
37AQI
2025 Days Vs Air Quality
Devnya, Varna, Bulgaria
57%
159
43%
118
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 57%
Health Risk Level:
Considerable
In 2025, 57% of 278 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
Devnya, Varna, Bulgaria
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
79AQI
77AQI
70AQI
65AQI
63AQI
61AQI
61AQI
60AQI
60AQI
59AQI
57AQI
56AQI
56AQI
56AQI
55AQI
55AQI
56AQI
57AQI
60AQI
63AQI
65AQI
65AQI
66AQI
69AQI
68AQI
67AQI
66AQI
67AQI
66AQI
65AQI
65AQI
67AQI
65AQI
63AQI
62AQI
60AQI
58AQI
57AQI
56AQI
54AQI
54AQI
54AQI
55AQI
57AQI
57AQI
59AQI
58AQI
58AQI
56AQI
56AQI
56AQI
56AQI
56AQI
57AQI
58AQI
66AQI
69AQI
69AQI
67AQI
64AQI
64AQI
61AQI
59AQI
59AQI
59AQI
60AQI
61AQI
62AQI
63AQI
62AQI
59AQI
58AQI
56AQI
55AQI
54AQI
54AQI
49AQI
46AQI
47AQI
51AQI
52AQI
52AQI
53AQI
54AQI
54AQI
55AQI
55AQI
55AQI
56AQI
55AQI
53AQI
51AQI
51AQI
51AQI
51AQI
46AQI
41AQI
44AQI
43AQI
42AQI
40AQI
39AQI
40AQI
40AQI
39AQI
41AQI
40AQI
39AQI
39AQI
39AQI
41AQI
40AQI
41AQI
41AQI
42AQI
40AQI
40AQI
39AQI
39AQI
38AQI
40AQI
44AQI
51AQI
44AQI
48AQI
53AQI
52AQI
53AQI
53AQI
52AQI
51AQI
48AQI
44AQI
44AQI
46AQI
48AQI
48AQI
48AQI
44AQI
44AQI
39AQI
41AQI
45AQI
47AQI
44AQI
40AQI
42AQI
41AQI
46AQI
47AQI
46AQI
46AQI
47AQI
47AQI
50AQI
52AQI
53AQI
52AQI
52AQI
55AQI
55AQI
56AQI
56AQI
55AQI
54AQI
54AQI
53AQI
52AQI
53AQI
54AQI
55AQI
51AQI
50AQI
48AQI
48AQI
48AQI
50AQI
51AQI
49AQI
46AQI
44AQI
44AQI
42AQI
39AQI
41AQI
43AQI
43AQI
43AQI
44AQI
44AQI
42AQI
42AQI
44AQI
46AQI
45AQI
43AQI
41AQI
42AQI
38AQI
37AQI
38AQI
36AQI
36AQI
35AQI
33AQI
36AQI
38AQI
39AQI
40AQI
41AQI
40AQI
39AQI
39AQI
39AQI
40AQI
39AQI
39AQI
42AQI
44AQI
44AQI
43AQI
45AQI
45AQI
44AQI
45AQI
44AQI
47AQI
46AQI
46AQI
44AQI
43AQI
42AQI
42AQI
41AQI
39AQI
39AQI
38AQI
38AQI
38AQI
36AQI
36AQI
37AQI
40AQI
40AQI
41AQI
42AQI
40AQI
39AQI
39AQI
40AQI
41AQI
42AQI
45AQI
45AQI
43AQI
43AQI
42AQI
41AQI
37AQI
35AQI
32AQI
29AQI
28AQI
29AQI
27AQI
28AQI
31AQI
34AQI
27AQI
22AQI
25AQI
34AQI
41AQI
58AQI
42AQI
39AQI
29AQI
63AQI
59AQI
56AQI
42AQI
46AQI
51AQI
40AQI
41AQI
36AQI
42AQI
No. of days
202548AQI
Highest AQI recorded in
January63AQI
Lowest AQI recorded in
September36AQI
202438AQI
Highest AQI recorded in
November56AQI
Lowest AQI recorded in
January23AQI
202327AQI
Highest AQI recorded in
October36AQI
Lowest AQI recorded in
November21AQI
202228AQI
Highest AQI recorded in
August56AQI
Lowest AQI recorded in
September21AQI
202127AQI
Highest AQI recorded in
February32AQI
Lowest AQI recorded in
December22AQI
202027AQI
Highest AQI recorded in
March38AQI
Lowest AQI recorded in
June22AQI
Most & Least Polluted Years Over the Last 6 Years
Devnya's annual 2025 AQI (48) shows an average percentage change of 68.4% (worsened AQI) compared to previous years: 2020 (27), 2021 (27), 2022 (28), 2023 (27), 2024 (38).