Old Town, Cluj Napoca, Judetul Cluj, Romania Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Old Town, Cluj Napoca, Judetul Cluj, Romania
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 28 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Old Town, Cluj Napoca, Judetul Cluj, Romania
6 AM17th Sep 2025
8 PM
5 AM18th Sep 2025
AQI
AQI
27AQI
19AQI
In the last 24 hours,
Old Town's AQI reached its highest point of 27 at 8 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Old Town, Cluj Napoca, Judetul Cluj, Romania
20°C13/27°C
21°C13/29°C
22°C15/31°C
20°C13/27°C
16°C11/20°C
13°C7/18°C
14°C6/22°C
16°C9/25°C
19°C11/27°C
21°C12/30°C
22°C12/33°C
22°C13/32°C
19°C15/28°C
19°C14/25°C
21°C14/28°C
23°C16/31°C
23°C16/29°C
22°C16/30°C
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
--°C/°C
--°C/°C
33AQI
31AQI
33AQI
32AQI
2025 Days Vs Air Quality
Old Town, Cluj Napoca, Judetul Cluj, Romania
84%
93
16%
18
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 260 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Old Town, Cluj Napoca, Judetul Cluj, Romania
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
55AQI
38AQI
38AQI
38AQI
45AQI
49AQI
51AQI
57AQI
64AQI
67AQI
64AQI
57AQI
58AQI
67AQI
54AQI
51AQI
43AQI
45AQI
46AQI
51AQI
52AQI
56AQI
53AQI
43AQI
44AQI
44AQI
46AQI
47AQI
42AQI
41AQI
39AQI
33AQI
35AQI
28AQI
24AQI
24AQI
27AQI
33AQI
30AQI
40AQI
45AQI
40AQI
31AQI
31AQI
31AQI
31AQI
46AQI
52AQI
53AQI
49AQI
35AQI
32AQI
29AQI
47AQI
50AQI
37AQI
29AQI
40AQI
45AQI
41AQI
32AQI
27AQI
27AQI
25AQI
26AQI
28AQI
28AQI
28AQI
28AQI
28AQI
27AQI
31AQI
33AQI
26AQI
30AQI
32AQI
33AQI
33AQI
34AQI
35AQI
35AQI
34AQI
34AQI
35AQI
34AQI
34AQI
32AQI
31AQI
29AQI
28AQI
30AQI
30AQI
29AQI
30AQI
30AQI
32AQI
32AQI
33AQI
55AQI
34AQI
33AQI
34AQI
34AQI
34AQI
35AQI
35AQI
34AQI
34AQI
34AQI
31AQI
28AQI
44AQI
49AQI
36AQI
31AQI
35AQI
No. of days
202538AQI
Highest AQI recorded in
June49AQI
Lowest AQI recorded in
August31AQI
Most & Least Polluted Years Over the Last 1 Years
Old Town's annual 2025 AQI (38) shows an average percentage change of NaN% (improved AQI) compared to previous years: .