Chestnut Alley, Copsa Mica, Sibiu, Romania 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
Chestnut Alley, Copsa Mica, Sibiu, Romania
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Chestnut Alley, Copsa Mica, Sibiu, Romania
7 AM4th Oct 2025
7 PM
6 AM5th Oct 2025
52AQI
44AQI
61AQI
51AQI
In the last 24 hours,
Chestnut Alley's AQI reached its highest point of 61 at 9 PM during the Night, while the lowest point, 44, was recorded at 9 AM during the Day between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Chestnut Alley, Copsa Mica, Sibiu, Romania
23°C16/32°C
22°C14/30°C
22°C14/30°C
20°C13/29°C
18°C14/25°C
20°C13/28°C
20°C15/24°C
18°C14/22°C
19°C13/26°C
18°C12/25°C
17°C13/23°C
18°C10/27°C
14°C12/17°C
13°C7/20°C
14°C8/21°C
18°C12/25°C
19°C12/29°C
19°C11/28°C
18°C10/27°C
19°C12/28°C
16°C12/22°C
11°C9/12°C
12°C8/18°C
11°C4/18°C
10°C8/13°C
9°C5/13°C
9°C5/13°C
8°C6/11°C
5°C4/6°C
6°C4/8°C
--°C/°C
35AQI
30AQI
34AQI
33AQI
2025 Days Vs Air Quality
Chestnut Alley, Copsa Mica, Sibiu, Romania
60%
167
40%
110
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 60%
Health Risk Level:
Moderate
In 2025, 60% of 278 days were within WHO’s safe air quality limits, and 40% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Chestnut Alley, Copsa Mica, Sibiu, Romania
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
60AQI
60AQI
59AQI
57AQI
57AQI
57AQI
57AQI
57AQI
58AQI
57AQI
54AQI
52AQI
51AQI
52AQI
55AQI
56AQI
57AQI
58AQI
58AQI
58AQI
58AQI
61AQI
63AQI
62AQI
61AQI
61AQI
60AQI
59AQI
60AQI
60AQI
61AQI
60AQI
62AQI
60AQI
60AQI
59AQI
59AQI
59AQI
59AQI
59AQI
59AQI
59AQI
59AQI
60AQI
60AQI
58AQI
58AQI
59AQI
58AQI
58AQI
57AQI
57AQI
57AQI
58AQI
58AQI
59AQI
60AQI
60AQI
60AQI
59AQI
59AQI
57AQI
58AQI
59AQI
59AQI
59AQI
61AQI
63AQI
61AQI
61AQI
57AQI
55AQI
54AQI
52AQI
49AQI
47AQI
45AQI
45AQI
46AQI
47AQI
49AQI
49AQI
49AQI
49AQI
49AQI
50AQI
49AQI
48AQI
47AQI
46AQI
47AQI
47AQI
47AQI
47AQI
47AQI
46AQI
44AQI
43AQI
41AQI
41AQI
38AQI
38AQI
37AQI
36AQI
31AQI
32AQI
32AQI
28AQI
25AQI
24AQI
23AQI
23AQI
23AQI
24AQI
25AQI
26AQI
26AQI
28AQI
28AQI
28AQI
32AQI
35AQI
40AQI
45AQI
49AQI
52AQI
52AQI
54AQI
53AQI
53AQI
51AQI
55AQI
54AQI
52AQI
51AQI
54AQI
45AQI
47AQI
47AQI
49AQI
50AQI
49AQI
53AQI
56AQI
58AQI
53AQI
45AQI
41AQI
43AQI
45AQI
45AQI
49AQI
48AQI
51AQI
51AQI
53AQI
56AQI
57AQI
55AQI
54AQI
53AQI
55AQI
54AQI
54AQI
49AQI
51AQI
51AQI
51AQI
49AQI
50AQI
49AQI
47AQI
45AQI
41AQI
42AQI
45AQI
50AQI
51AQI
50AQI
47AQI
46AQI
43AQI
39AQI
38AQI
37AQI
39AQI
41AQI
45AQI
50AQI
50AQI
45AQI
41AQI
40AQI
41AQI
43AQI
39AQI
37AQI
35AQI
30AQI
28AQI
27AQI
34AQI
49AQI
46AQI
45AQI
45AQI
50AQI
52AQI
54AQI
49AQI
43AQI
43AQI
40AQI
40AQI
37AQI
39AQI
32AQI
30AQI
27AQI
27AQI
26AQI
28AQI
30AQI
30AQI
30AQI
31AQI
31AQI
32AQI
32AQI
32AQI
32AQI
33AQI
33AQI
34AQI
33AQI
31AQI
29AQI
27AQI
28AQI
29AQI
29AQI
29AQI
29AQI
30AQI
31AQI
32AQI
50AQI
37AQI
35AQI
36AQI
38AQI
35AQI
36AQI
35AQI
33AQI
33AQI
32AQI
30AQI
28AQI
25AQI
23AQI
21AQI
22AQI
24AQI
21AQI
22AQI
22AQI
26AQI
23AQI
23AQI
34AQI
36AQI
41AQI
51AQI
57AQI
52AQI
54AQI
58AQI
59AQI
53AQI
34AQI
49AQI
50AQI
42AQI
31AQI
30AQI
54AQI
No. of days
202545AQI
Highest AQI recorded in
February59AQI
Lowest AQI recorded in
September30AQI
202428AQI
Highest AQI recorded in
November65AQI
Lowest AQI recorded in
April8AQI
20238AQI
Highest AQI recorded in
December21AQI
Lowest AQI recorded in
January2AQI
202211AQI
Highest AQI recorded in
March30AQI
Lowest AQI recorded in
August0AQI
202118AQI
Highest AQI recorded in
February30AQI
Lowest AQI recorded in
May8AQI
202019AQI
Highest AQI recorded in
November25AQI
Lowest AQI recorded in
April11AQI
Most & Least Polluted Years Over the Last 6 Years
Chestnut Alley's annual 2025 AQI (45) shows an average percentage change of 230.2% (worsened AQI) compared to previous years: 2020 (19), 2021 (18), 2022 (11), 2023 (8), 2024 (28).