Kawatana, Sato, Nagasaki, Japan 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
Kawatana, Sato, Nagasaki, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 25 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Kawatana, Sato, Nagasaki, Japan
6 AM29th Sep 2025
6 PM
5 AM30th Sep 2025
AQI
AQI
30AQI
15AQI
In the last 24 hours,
Kawatana's AQI reached its highest point of 30 at 9 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Kawatana, Sato, Nagasaki, Japan
27°C24/32°C
27°C23/32°C
27°C24/31°C
28°C23/33°C
27°C24/31°C
27°C23/32°C
28°C23/33°C
28°C24/32°C
28°C24/32°C
27°C24/32°C
25°C24/29°C
26°C22/30°C
26°C23/31°C
26°C24/29°C
27°C24/31°C
27°C24/32°C
27°C24/32°C
27°C24/31°C
25°C23/29°C
25°C21/30°C
24°C23/26°C
23°C20/27°C
23°C19/28°C
25°C21/29°C
25°C22/29°C
25°C23/28°C
26°C22/30°C
22°C20/23°C
24°C20/27°C
--°C/°C
--°C/°C
32AQI
28AQI
33AQI
29AQI
2025 Days Vs Air Quality
Kawatana, Sato, Nagasaki, Japan
83%
227
17%
45
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 272 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
Kawatana, Sato, Nagasaki, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI
41AQI
34AQI
34AQI
32AQI
52AQI
33AQI
41AQI
29AQI
32AQI
29AQI
34AQI
40AQI
46AQI
43AQI
38AQI
50AQI
47AQI
48AQI
60AQI
74AQI
77AQI
69AQI
73AQI
44AQI
44AQI
38AQI
36AQI
32AQI
34AQI
42AQI
38AQI
35AQI
43AQI
31AQI
41AQI
32AQI
35AQI
31AQI
30AQI
31AQI
40AQI
35AQI
33AQI
36AQI
31AQI
37AQI
38AQI
33AQI
32AQI
33AQI
32AQI
38AQI
36AQI
36AQI
36AQI
46AQI
63AQI
59AQI
54AQI
39AQI
42AQI
29AQI
32AQI
30AQI
33AQI
37AQI
43AQI
47AQI
46AQI
51AQI
51AQI
36AQI
30AQI
30AQI
48AQI
45AQI
48AQI
54AQI
56AQI
63AQI
59AQI
51AQI
61AQI
58AQI
45AQI
60AQI
50AQI
37AQI
39AQI
39AQI
33AQI
34AQI
36AQI
41AQI
41AQI
39AQI
39AQI
53AQI
46AQI
59AQI
52AQI
49AQI
55AQI
36AQI
50AQI
44AQI
53AQI
47AQI
39AQI
40AQI
32AQI
25AQI
33AQI
47AQI
45AQI
48AQI
41AQI
50AQI
50AQI
42AQI
42AQI
42AQI
39AQI
42AQI
40AQI
36AQI
45AQI
35AQI
37AQI
49AQI
53AQI
58AQI
58AQI
57AQI
61AQI
38AQI
50AQI
51AQI
38AQI
30AQI
34AQI
42AQI
26AQI
32AQI
37AQI
44AQI
49AQI
54AQI
45AQI
42AQI
49AQI
48AQI
38AQI
46AQI
46AQI
46AQI
56AQI
62AQI
34AQI
31AQI
38AQI
37AQI
34AQI
29AQI
27AQI
29AQI
26AQI
31AQI
33AQI
31AQI
27AQI
23AQI
21AQI
22AQI
22AQI
27AQI
27AQI
27AQI
26AQI
35AQI
50AQI
55AQI
57AQI
63AQI
54AQI
50AQI
48AQI
54AQI
58AQI
56AQI
51AQI
49AQI
46AQI
42AQI
47AQI
50AQI
50AQI
38AQI
38AQI
33AQI
40AQI
47AQI
50AQI
46AQI
31AQI
27AQI
25AQI
30AQI
28AQI
34AQI
34AQI
48AQI
51AQI
52AQI
44AQI
43AQI
45AQI
50AQI
40AQI
37AQI
42AQI
36AQI
39AQI
44AQI
40AQI
40AQI
41AQI
39AQI
50AQI
51AQI
43AQI
45AQI
51AQI
42AQI
37AQI
35AQI
33AQI
39AQI
42AQI
43AQI
49AQI
48AQI
36AQI
38AQI
43AQI
30AQI
30AQI
34AQI
38AQI
33AQI
28AQI
30AQI
36AQI
38AQI
30AQI
30AQI
29AQI
25AQI
26AQI
23AQI
24AQI
22AQI
21AQI
26AQI
28AQI
23AQI
39AQI
41AQI
25AQI
24AQI
25AQI
44AQI
37AQI
45AQI
43AQI
43AQI
34AQI
45AQI
43AQI
30AQI
No. of days
202541AQI
Highest AQI recorded in
March45AQI
Lowest AQI recorded in
September30AQI
202438AQI
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
July22AQI
202341AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
August33AQI
202240AQI
Highest AQI recorded in
May48AQI
Lowest AQI recorded in
June35AQI
202139AQI
Highest AQI recorded in
May47AQI
Lowest AQI recorded in
July33AQI
202038AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
September0AQI
Most & Least Polluted Years Over the Last 6 Years
Kawatana's annual 2025 AQI (41) shows an average percentage change of 3.9% (worsened AQI) compared to previous years: 2020 (38), 2021 (39), 2022 (40), 2023 (41), 2024 (38).