Shindenmachi, 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
Shindenmachi, Shimabara, Nagasaki, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (17th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 25 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 16th Aug - 17th Aug 2026
Shindenmachi, Shimabara, Nagasaki, Japan
5 AM16th Aug 2026
7 PM
4 AM17th Aug 2026
36AQI
21AQI
36AQI
23AQI
In the last 24 hours,
Shindenmachi's AQI reached its highest point of 36 at 6 PM during the Day, while the lowest point, 21, was recorded at 11 AM during the Day between 16th Aug and 17th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Shindenmachi, Shimabara, Nagasaki, Japan
27°C26/29°C
27°C26/29°C
27°C26/29°C
27°C25/30°C
27°C25/29°C
28°C25/30°C
28°C26/31°C
29°C26/32°C
29°C26/33°C
28°C25/30°C
26°C25/28°C
27°C25/30°C
27°C25/30°C
28°C25/31°C
29°C26/33°C
30°C27/35°C
29°C27/32°C
29°C26/32°C
29°C26/33°C
28°C27/30°C
28°C26/31°C
28°C25/32°C
28°C25/31°C
26°C24/30°C
25°C22/30°C
26°C24/28°C
26°C24/29°C
26°C24/29°C
25°C24/25°C
14°C14/15°C
34AQI
28AQI
32AQI
28AQI
2026 Days Vs Air Quality
Shindenmachi, Shimabara, Nagasaki, Japan
87%
199
13%
30
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 229 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
Shindenmachi, Shimabara, Nagasaki, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI (US)
18AQI (US)
23AQI (US)
39AQI (US)
45AQI (US)
16AQI (US)
33AQI (US)
28AQI (US)
15AQI (US)
26AQI (US)
27AQI (US)
23AQI (US)
29AQI (US)
19AQI (US)
35AQI (US)
43AQI (US)
58AQI (US)
62AQI (US)
70AQI (US)
32AQI (US)
13AQI (US)
24AQI (US)
38AQI (US)
45AQI (US)
24AQI (US)
14AQI (US)
35AQI (US)
26AQI (US)
37AQI (US)
30AQI (US)
16AQI (US)
49AQI (US)
29AQI (US)
36AQI (US)
32AQI (US)
38AQI (US)
50AQI (US)
39AQI (US)
24AQI (US)
35AQI (US)
41AQI (US)
36AQI (US)
54AQI (US)
37AQI (US)
49AQI (US)
49AQI (US)
57AQI (US)
24AQI (US)
26AQI (US)
58AQI (US)
27AQI (US)
43AQI (US)
30AQI (US)
36AQI (US)
20AQI (US)
20AQI (US)
19AQI (US)
48AQI (US)
37AQI (US)
34AQI (US)
51AQI (US)
11AQI (US)
28AQI (US)
46AQI (US)
47AQI (US)
48AQI (US)
36AQI (US)
41AQI (US)
44AQI (US)
35AQI (US)
46AQI (US)
36AQI (US)
43AQI (US)
56AQI (US)
48AQI (US)
47AQI (US)
55AQI (US)
30AQI (US)
56AQI (US)
31AQI (US)
50AQI (US)
24AQI (US)
51AQI (US)
31AQI (US)
30AQI (US)
53AQI (US)
72AQI (US)
90AQI (US)
45AQI (US)
22AQI (US)
19AQI (US)
56AQI (US)
47AQI (US)
39AQI (US)
34AQI (US)
57AQI (US)
37AQI (US)
24AQI (US)
30AQI (US)
36AQI (US)
35AQI (US)
32AQI (US)
33AQI (US)
29AQI (US)
30AQI (US)
35AQI (US)
35AQI (US)
25AQI (US)
27AQI (US)
31AQI (US)
48AQI (US)
41AQI (US)
14AQI (US)
29AQI (US)
42AQI (US)
47AQI (US)
53AQI (US)
46AQI (US)
36AQI (US)
32AQI (US)
50AQI (US)
50AQI (US)
33AQI (US)
26AQI (US)
32AQI (US)
37AQI (US)
32AQI (US)
27AQI (US)
29AQI (US)
36AQI (US)
50AQI (US)
34AQI (US)
22AQI (US)
30AQI (US)
38AQI (US)
77AQI (US)
62AQI (US)
53AQI (US)
46AQI (US)
59AQI (US)
66AQI (US)
68AQI (US)
63AQI (US)
62AQI (US)
55AQI (US)
41AQI (US)
24AQI (US)
25AQI (US)
30AQI (US)
33AQI (US)
52AQI (US)
66AQI (US)
19AQI (US)
15AQI (US)
24AQI (US)
22AQI (US)
48AQI (US)
14AQI (US)
18AQI (US)
23AQI (US)
22AQI (US)
25AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
19AQI (US)
18AQI (US)
27AQI (US)
22AQI (US)
25AQI (US)
22AQI (US)
21AQI (US)
20AQI (US)
21AQI (US)
21AQI (US)
28AQI (US)
27AQI (US)
26AQI (US)
27AQI (US)
26AQI (US)
24AQI (US)
20AQI (US)
21AQI (US)
25AQI (US)
24AQI (US)
21AQI (US)
21AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
37AQI (US)
19AQI (US)
24AQI (US)
37AQI (US)
25AQI (US)
26AQI (US)
27AQI (US)
32AQI (US)
33AQI (US)
30AQI (US)
32AQI (US)
33AQI (US)
28AQI (US)
29AQI (US)
29AQI (US)
29AQI (US)
25AQI (US)
32AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
23AQI (US)
27AQI (US)
47AQI (US)
57AQI (US)
60AQI (US)
31AQI (US)
20AQI (US)
26AQI (US)
27AQI (US)
26AQI (US)
25AQI (US)
27AQI (US)
23AQI (US)
34AQI (US)
31AQI (US)
34AQI (US)
26AQI (US)
25AQI (US)
31AQI (US)
37AQI (US)
43AQI (US)
36AQI (US)
43AQI (US)
25AQI (US)
27AQI (US)
32AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
March43AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202542AQI (US)
Highest AQI (US) recorded in
October49AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
202439AQI (US)
Highest AQI (US) recorded in
May50AQI (US)
Lowest AQI (US) recorded in
July24AQI (US)
202342AQI (US)
Highest AQI (US) recorded in
April50AQI (US)
Lowest AQI (US) recorded in
August32AQI (US)
202242AQI (US)
Highest AQI (US) recorded in
March49AQI (US)
Lowest AQI (US) recorded in
August29AQI (US)
202140AQI (US)
Highest AQI (US) recorded in
June47AQI (US)
Lowest AQI (US) recorded in
August32AQI (US)
202040AQI (US)
Highest AQI (US) recorded in
August51AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Shindenmachi's annual 2026 AQI (US) (34) shows an average percentage change of -16.6% (improved AQI (US)) compared to previous years: 2020 (40), 2021 (40), 2022 (42), 2023 (42), 2024 (39), 2025 (42).