Obamacho Kitahonmachi, Shimabara, Nagasaki, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Obamacho Kitahonmachi, Shimabara, Nagasaki, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 42 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Obamacho Kitahonmachi, Shimabara, Nagasaki, Japan
5 AM5th Aug 2025
7 PM
4 AM6th Aug 2025
56AQI
34AQI
46AQI
42AQI
In the last 24 hours,
Obamacho Kitahonmachi's AQI reached its highest point of 56 at 2 PM during the Day, while the lowest point, 34, was recorded at 9 AM during the Day between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Obamacho Kitahonmachi, Shimabara, Nagasaki, Japan
27°C24/29°C
28°C26/31°C
28°C25/31°C
28°C25/30°C
28°C26/30°C
28°C25/30°C
26°C25/29°C
25°C24/26°C
26°C24/27°C
26°C23/28°C
26°C25/29°C
24°C23/24°C
26°C24/29°C
27°C24/30°C
28°C25/30°C
28°C25/31°C
29°C25/31°C
28°C26/31°C
28°C26/32°C
27°C25/31°C
28°C25/31°C
28°C25/32°C
28°C25/31°C
28°C25/31°C
28°C24/32°C
29°C26/31°C
29°C26/31°C
28°C26/29°C
28°C26/29°C
28°C26/29°C
--°C/°C
42AQI
32AQI
43AQI
40AQI
2025 Days Vs Air Quality
Obamacho Kitahonmachi, Shimabara, Nagasaki, Japan
84%
181
16%
35
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 218 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
Obamacho Kitahonmachi, Shimabara, Nagasaki, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
40AQI
39AQI
35AQI
32AQI
45AQI
31AQI
37AQI
29AQI
32AQI
28AQI
32AQI
39AQI
42AQI
46AQI
38AQI
48AQI
48AQI
51AQI
49AQI
72AQI
72AQI
67AQI
68AQI
47AQI
44AQI
41AQI
37AQI
34AQI
35AQI
38AQI
38AQI
35AQI
44AQI
31AQI
38AQI
32AQI
34AQI
31AQI
31AQI
32AQI
38AQI
39AQI
33AQI
37AQI
31AQI
34AQI
41AQI
34AQI
37AQI
34AQI
34AQI
40AQI
36AQI
38AQI
35AQI
42AQI
60AQI
55AQI
53AQI
40AQI
41AQI
29AQI
31AQI
31AQI
34AQI
39AQI
42AQI
46AQI
37AQI
49AQI
50AQI
36AQI
33AQI
29AQI
44AQI
42AQI
41AQI
50AQI
52AQI
61AQI
56AQI
42AQI
58AQI
56AQI
47AQI
59AQI
55AQI
45AQI
48AQI
46AQI
36AQI
40AQI
36AQI
42AQI
41AQI
40AQI
36AQI
53AQI
43AQI
56AQI
48AQI
47AQI
56AQI
32AQI
47AQI
43AQI
50AQI
45AQI
33AQI
40AQI
27AQI
26AQI
31AQI
44AQI
41AQI
47AQI
38AQI
50AQI
49AQI
43AQI
39AQI
41AQI
36AQI
41AQI
34AQI
36AQI
45AQI
35AQI
39AQI
48AQI
53AQI
57AQI
58AQI
56AQI
58AQI
39AQI
45AQI
51AQI
38AQI
30AQI
34AQI
43AQI
28AQI
33AQI
36AQI
45AQI
48AQI
50AQI
43AQI
43AQI
48AQI
46AQI
34AQI
44AQI
46AQI
45AQI
56AQI
57AQI
32AQI
29AQI
36AQI
36AQI
38AQI
27AQI
27AQI
30AQI
28AQI
31AQI
32AQI
28AQI
25AQI
16AQI
17AQI
21AQI
21AQI
22AQI
24AQI
26AQI
27AQI
42AQI
59AQI
73AQI
64AQI
72AQI
55AQI
47AQI
45AQI
52AQI
60AQI
51AQI
38AQI
37AQI
37AQI
36AQI
42AQI
52AQI
49AQI
34AQI
34AQI
30AQI
30AQI
43AQI
47AQI
34AQI
27AQI
24AQI
23AQI
24AQI
25AQI
30AQI
27AQI
43AQI
48AQI
49AQI
42AQI
43AQI
37AQI
44AQI
42AQI
43AQI
33AQI
42AQI
46AQI
No. of days
202541AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
June33AQI
202437AQI
Highest AQI recorded in
May48AQI
Lowest AQI recorded in
July21AQI
202338AQI
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
August28AQI
202238AQI
Highest AQI recorded in
August58AQI
Lowest AQI recorded in
December32AQI
202136AQI
Highest AQI recorded in
May43AQI
Lowest AQI recorded in
August29AQI
202035AQI
Highest AQI recorded in
August49AQI
Lowest AQI recorded in
September0AQI
Most & Least Polluted Years Over the Last 6 Years
Obamacho Kitahonmachi's annual 2025 AQI (41) shows an average percentage change of 10.9% (worsened AQI) compared to previous years: 2020 (35), 2021 (36), 2022 (38), 2023 (38), 2024 (37).