Devnya, Varna, Bulgaria 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
Devnya, Varna, Bulgaria
AQI Trends: Highest and Lowest
Same Day Analysis (30th July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 40 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 31st Jul - 1st Aug 2025
Devnya, Varna, Bulgaria
5 AM31st Jul 2025
8 PM
4 AM1st Aug 2025
AQI
AQI
42AQI
37AQI
In the last 24 hours,
Devnya's AQI reached its highest point of 42 at 10 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 31st Jul and 1st Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Devnya, Varna, Bulgaria
21°C17/27°C
22°C17/28°C
23°C18/29°C
25°C20/30°C
25°C20/30°C
25°C20/30°C
25°C20/29°C
25°C18/30°C
23°C16/30°C
21°C16/26°C
23°C17/28°C
24°C19/31°C
25°C20/31°C
26°C21/31°C
26°C21/32°C
25°C21/32°C
24°C17/30°C
24°C18/31°C
25°C19/32°C
26°C20/32°C
27°C22/32°C
26°C23/31°C
26°C22/31°C
26°C22/32°C
27°C22/33°C
27°C22/31°C
27°C21/36°C
25°C20/31°C
24°C20/30°C
--°C/°C
--°C/°C
40AQI
39AQI
41AQI
41AQI
2025 Days Vs Air Quality
Devnya, Varna, Bulgaria
45%
94
55%
117
Total number of days with different AQI categories in last 212 days in 2025 (153 days remaining)
Under WHO’s Safe Air Quality Limits: 45%
Health Risk Level:
Significant
In 2025, 45% of 212 days were within WHO’s safe air quality limits, and 55% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
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
63AQI
59AQI
56AQI
42AQI
46AQI
51AQI
41AQI
No. of days
202551AQI
Highest AQI recorded in
January63AQI
Lowest AQI recorded in
July41AQI
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 (51) shows an average percentage change of 78.6% (worsened AQI) compared to previous years: 2020 (27), 2021 (27), 2022 (28), 2023 (27), 2024 (38).