Kose, Nara, Japan 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
Kose, Nara, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (10th 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: 11th Oct - 12th Oct 2025
Kose, Nara, Japan
5 AM11th Oct 2025
5 PM
4 AM12th Oct 2025
AQI
AQI
65AQI
44AQI
In the last 24 hours,
Kose's AQI reached its highest point of 65 at 3 PM during the Night, while the lowest point, 44, was recorded at 10 PM during the Night between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Kose, Nara, Japan
26°C23/31°C
27°C23/32°C
27°C24/32°C
28°C25/33°C
28°C24/34°C
28°C24/33°C
26°C23/31°C
25°C22/30°C
25°C23/29°C
24°C20/29°C
22°C18/27°C
22°C20/26°C
24°C22/28°C
24°C21/29°C
25°C21/30°C
23°C19/28°C
24°C18/30°C
23°C20/25°C
22°C18/27°C
23°C18/27°C
22°C18/27°C
21°C20/23°C
22°C20/25°C
23°C21/28°C
22°C19/27°C
24°C19/29°C
24°C20/30°C
22°C19/26°C
20°C18/23°C
--°C/°C
--°C/°C
42AQI
39AQI
44AQI
40AQI
2025 Days Vs Air Quality
Kose, Nara, Japan
72%
205
28%
78
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Under WHO’s Safe Air Quality Limits: 72%
Health Risk Level:
Low
In 2025, 72% of 284 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
Kose, Nara, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
33AQI
33AQI
31AQI
32AQI
33AQI
32AQI
29AQI
29AQI
25AQI
27AQI
31AQI
34AQI
46AQI
40AQI
38AQI
32AQI
33AQI
35AQI
39AQI
38AQI
47AQI
61AQI
63AQI
43AQI
38AQI
39AQI
35AQI
33AQI
38AQI
65AQI
64AQI
45AQI
45AQI
40AQI
39AQI
32AQI
33AQI
31AQI
28AQI
30AQI
30AQI
38AQI
30AQI
37AQI
29AQI
45AQI
39AQI
33AQI
30AQI
27AQI
29AQI
33AQI
34AQI
31AQI
35AQI
37AQI
54AQI
56AQI
57AQI
73AQI
44AQI
39AQI
28AQI
37AQI
33AQI
39AQI
37AQI
43AQI
34AQI
35AQI
48AQI
38AQI
35AQI
24AQI
37AQI
24AQI
28AQI
36AQI
51AQI
54AQI
61AQI
66AQI
71AQI
75AQI
61AQI
45AQI
41AQI
36AQI
35AQI
34AQI
35AQI
25AQI
27AQI
40AQI
40AQI
47AQI
44AQI
53AQI
55AQI
53AQI
55AQI
35AQI
46AQI
25AQI
42AQI
48AQI
58AQI
62AQI
49AQI
42AQI
47AQI
35AQI
34AQI
61AQI
54AQI
57AQI
44AQI
52AQI
63AQI
57AQI
40AQI
48AQI
40AQI
44AQI
29AQI
34AQI
34AQI
37AQI
31AQI
32AQI
49AQI
53AQI
59AQI
56AQI
56AQI
47AQI
57AQI
56AQI
69AQI
51AQI
39AQI
54AQI
36AQI
29AQI
32AQI
31AQI
30AQI
38AQI
34AQI
38AQI
43AQI
51AQI
30AQI
45AQI
45AQI
52AQI
54AQI
65AQI
46AQI
35AQI
37AQI
50AQI
53AQI
38AQI
31AQI
41AQI
40AQI
49AQI
52AQI
58AQI
56AQI
54AQI
46AQI
38AQI
41AQI
36AQI
51AQI
50AQI
54AQI
58AQI
61AQI
73AQI
80AQI
98AQI
88AQI
75AQI
71AQI
75AQI
81AQI
64AQI
53AQI
53AQI
50AQI
41AQI
47AQI
54AQI
38AQI
38AQI
37AQI
36AQI
35AQI
39AQI
44AQI
42AQI
33AQI
31AQI
29AQI
34AQI
43AQI
47AQI
44AQI
46AQI
45AQI
48AQI
59AQI
49AQI
52AQI
45AQI
50AQI
50AQI
47AQI
38AQI
34AQI
39AQI
47AQI
48AQI
46AQI
43AQI
45AQI
43AQI
45AQI
40AQI
37AQI
49AQI
52AQI
54AQI
57AQI
55AQI
54AQI
56AQI
56AQI
55AQI
40AQI
33AQI
36AQI
27AQI
23AQI
26AQI
33AQI
33AQI
36AQI
34AQI
28AQI
30AQI
27AQI
37AQI
33AQI
44AQI
49AQI
37AQI
33AQI
40AQI
28AQI
31AQI
35AQI
27AQI
36AQI
46AQI
25AQI
36AQI
32AQI
36AQI
45AQI
61AQI
65AQI
60AQI
51AQI
50AQI
49AQI
54AQI
56AQI
54AQI
37AQI
37AQI
44AQI
45AQI
43AQI
47AQI
53AQI
48AQI
34AQI
55AQI
No. of days
202544AQI
Highest AQI recorded in
October55AQI
Lowest AQI recorded in
September34AQI
202439AQI
Highest AQI recorded in
April48AQI
Lowest AQI recorded in
December31AQI
202340AQI
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
August30AQI
202239AQI
Highest AQI recorded in
May48AQI
Lowest AQI recorded in
August9AQI
202137AQI
Highest AQI recorded in
June44AQI
Lowest AQI recorded in
April31AQI
202039AQI
Highest AQI recorded in
August58AQI
Lowest AQI recorded in
July32AQI
Most & Least Polluted Years Over the Last 6 Years
Kose's annual 2025 AQI (44) shows an average percentage change of 13.06% (worsened AQI) compared to previous years: 2020 (39), 2021 (37), 2022 (39), 2023 (40), 2024 (39).