Strada Zefirului, Cluj Napoca, Cluj, 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
Strada Zefirului, Cluj Napoca, Cluj, Romania
AQI Trends: Highest and Lowest
Same Day Analysis (5th October ):
On this day, AQI across the 3 years varied significantly: 2025 ranks 1st highest AQI at 60 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Oct - 6th Oct 2025
Strada Zefirului, Cluj Napoca, Cluj, Romania
7 AM5th Oct 2025
7 PM
6 AM6th Oct 2025
AQI
AQI
83AQI
50AQI
In the last 24 hours,
Strada Zefirului's AQI reached its highest point of 83 at 12 AM during the Night, while the lowest point, undefined, was recorded at 6 AM during the Night between 5th Oct and 6th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Strada Zefirului, Cluj Napoca, Cluj, Romania
22°C15/29°C
21°C15/29°C
19°C13/27°C
16°C13/20°C
19°C12/26°C
18°C15/21°C
18°C15/23°C
19°C15/25°C
17°C13/24°C
16°C12/22°C
17°C11/24°C
14°C10/19°C
13°C8/18°C
15°C9/21°C
17°C11/25°C
19°C13/27°C
19°C12/27°C
18°C12/26°C
19°C13/26°C
15°C11/20°C
11°C9/13°C
11°C7/15°C
10°C5/17°C
10°C6/14°C
9°C5/13°C
8°C5/12°C
8°C6/10°C
7°C6/10°C
7°C6/9°C
--°C/°C
--°C/°C
33AQI
28AQI
35AQI
30AQI
2025 Days Vs Air Quality
Strada Zefirului, Cluj Napoca, Cluj, Romania
67%
187
33%
91
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 67%
Health Risk Level:
Moderate
In 2025, 67% of 278 days were within WHO’s safe air quality limits, and 33% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Strada Zefirului, Cluj Napoca, Cluj, Romania
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
61AQI
64AQI
61AQI
60AQI
60AQI
58AQI
58AQI
60AQI
57AQI
56AQI
54AQI
52AQI
51AQI
52AQI
54AQI
55AQI
56AQI
58AQI
58AQI
58AQI
59AQI
60AQI
61AQI
61AQI
60AQI
59AQI
59AQI
58AQI
58AQI
58AQI
59AQI
59AQI
60AQI
59AQI
59AQI
60AQI
59AQI
60AQI
59AQI
60AQI
60AQI
60AQI
61AQI
61AQI
63AQI
62AQI
61AQI
61AQI
62AQI
61AQI
61AQI
61AQI
61AQI
61AQI
63AQI
62AQI
62AQI
61AQI
61AQI
61AQI
60AQI
60AQI
58AQI
58AQI
58AQI
57AQI
57AQI
58AQI
59AQI
59AQI
57AQI
56AQI
55AQI
53AQI
50AQI
50AQI
47AQI
47AQI
48AQI
50AQI
52AQI
54AQI
55AQI
54AQI
54AQI
54AQI
52AQI
52AQI
51AQI
50AQI
49AQI
48AQI
48AQI
47AQI
46AQI
45AQI
42AQI
42AQI
40AQI
39AQI
40AQI
39AQI
39AQI
37AQI
37AQI
36AQI
36AQI
36AQI
34AQI
33AQI
31AQI
30AQI
29AQI
29AQI
29AQI
29AQI
28AQI
29AQI
29AQI
28AQI
27AQI
27AQI
33AQI
38AQI
44AQI
49AQI
37AQI
42AQI
41AQI
37AQI
30AQI
43AQI
41AQI
38AQI
39AQI
36AQI
33AQI
35AQI
35AQI
36AQI
38AQI
44AQI
45AQI
33AQI
28AQI
25AQI
29AQI
29AQI
32AQI
31AQI
27AQI
29AQI
29AQI
31AQI
31AQI
45AQI
50AQI
52AQI
53AQI
45AQI
52AQI
58AQI
43AQI
41AQI
36AQI
37AQI
35AQI
44AQI
40AQI
45AQI
37AQI
27AQI
22AQI
31AQI
32AQI
29AQI
26AQI
29AQI
27AQI
23AQI
24AQI
22AQI
24AQI
23AQI
28AQI
31AQI
29AQI
35AQI
37AQI
33AQI
25AQI
27AQI
28AQI
28AQI
33AQI
32AQI
30AQI
25AQI
16AQI
18AQI
20AQI
29AQI
31AQI
22AQI
19AQI
23AQI
25AQI
23AQI
19AQI
18AQI
18AQI
23AQI
24AQI
27AQI
28AQI
27AQI
27AQI
28AQI
23AQI
20AQI
19AQI
21AQI
27AQI
31AQI
31AQI
32AQI
32AQI
34AQI
33AQI
32AQI
32AQI
34AQI
33AQI
34AQI
32AQI
31AQI
28AQI
28AQI
29AQI
30AQI
28AQI
30AQI
29AQI
31AQI
32AQI
33AQI
35AQI
33AQI
33AQI
32AQI
33AQI
33AQI
35AQI
34AQI
33AQI
33AQI
33AQI
28AQI
25AQI
21AQI
14AQI
18AQI
32AQI
28AQI
20AQI
22AQI
35AQI
22AQI
15AQI
17AQI
27AQI
22AQI
31AQI
46AQI
57AQI
57AQI
55AQI
60AQI
58AQI
61AQI
54AQI
37AQI
36AQI
37AQI
26AQI
29AQI
28AQI
55AQI
No. of days
202541AQI
Highest AQI recorded in
February61AQI
Lowest AQI recorded in
July26AQI
202455AQI
Highest AQI recorded in
January100AQI
Lowest AQI recorded in
September27AQI
202383AQI
Highest AQI recorded in
January88AQI
Lowest AQI recorded in
November57AQI
202274AQI
Highest AQI recorded in
December121AQI
Lowest AQI recorded in
November32AQI
Most & Least Polluted Years Over the Last 4 Years
Strada Zefirului's annual 2025 AQI (41) shows an average percentage change of -40.8% (improved AQI) compared to previous years: 2022 (74), 2023 (83), 2024 (55).