Daitocho, Sato, Nagasaki, 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
Daitocho, Sato, Nagasaki, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (6th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Oct - 8th Oct 2025
Daitocho, Sato, Nagasaki, Japan
6 AM7th Oct 2025
6 PM
5 AM8th Oct 2025
AQI
AQI
67AQI
38AQI
In the last 24 hours,
Daitocho's AQI reached its highest point of 67 at 12 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 7th Oct and 8th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Daitocho, Sato, Nagasaki, Japan
28°C25/31°C
27°C25/31°C
26°C24/29°C
26°C23/31°C
26°C24/30°C
26°C25/29°C
27°C25/31°C
27°C25/31°C
27°C25/31°C
27°C25/30°C
26°C24/29°C
25°C23/29°C
25°C23/27°C
24°C21/27°C
23°C20/28°C
25°C22/29°C
26°C24/29°C
26°C24/30°C
26°C23/30°C
22°C20/24°C
24°C21/28°C
24°C21/27°C
22°C19/27°C
22°C19/26°C
23°C19/27°C
22°C20/23°C
25°C24/27°C
24°C22/27°C
24°C22/28°C
--°C/°C
--°C/°C
35AQI
31AQI
37AQI
37AQI
2025 Days Vs Air Quality
Daitocho, Sato, Nagasaki, Japan
77%
214
23%
65
Total number of days with different AQI categories in last 280 days in 2025 (85 days remaining)
Under WHO’s Safe Air Quality Limits: 77%
Health Risk Level:
Low
In 2025, 77% of 280 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
Daitocho, Sato, Nagasaki, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
33AQI
45AQI
33AQI
36AQI
34AQI
58AQI
30AQI
44AQI
29AQI
33AQI
28AQI
37AQI
40AQI
49AQI
46AQI
41AQI
53AQI
50AQI
48AQI
65AQI
76AQI
80AQI
67AQI
75AQI
44AQI
46AQI
41AQI
36AQI
34AQI
39AQI
44AQI
41AQI
36AQI
46AQI
31AQI
44AQI
31AQI
40AQI
30AQI
31AQI
30AQI
43AQI
43AQI
34AQI
42AQI
29AQI
42AQI
37AQI
35AQI
34AQI
34AQI
31AQI
41AQI
37AQI
38AQI
37AQI
50AQI
65AQI
63AQI
56AQI
40AQI
41AQI
30AQI
33AQI
31AQI
35AQI
41AQI
45AQI
50AQI
51AQI
53AQI
56AQI
42AQI
35AQI
35AQI
52AQI
51AQI
52AQI
58AQI
60AQI
68AQI
63AQI
55AQI
63AQI
58AQI
46AQI
61AQI
54AQI
40AQI
44AQI
43AQI
38AQI
39AQI
40AQI
43AQI
46AQI
45AQI
42AQI
56AQI
48AQI
61AQI
53AQI
54AQI
57AQI
37AQI
53AQI
46AQI
55AQI
47AQI
41AQI
42AQI
33AQI
26AQI
35AQI
49AQI
48AQI
51AQI
42AQI
51AQI
53AQI
45AQI
43AQI
43AQI
43AQI
45AQI
41AQI
40AQI
46AQI
37AQI
39AQI
50AQI
53AQI
58AQI
58AQI
57AQI
63AQI
39AQI
52AQI
51AQI
38AQI
29AQI
34AQI
43AQI
26AQI
34AQI
38AQI
45AQI
49AQI
53AQI
45AQI
44AQI
51AQI
49AQI
40AQI
49AQI
49AQI
46AQI
57AQI
61AQI
34AQI
30AQI
37AQI
35AQI
34AQI
31AQI
30AQI
31AQI
28AQI
33AQI
34AQI
32AQI
28AQI
24AQI
22AQI
23AQI
23AQI
27AQI
29AQI
27AQI
27AQI
35AQI
45AQI
53AQI
55AQI
62AQI
53AQI
51AQI
50AQI
56AQI
58AQI
56AQI
53AQI
50AQI
48AQI
44AQI
48AQI
50AQI
50AQI
39AQI
40AQI
36AQI
38AQI
46AQI
49AQI
48AQI
37AQI
34AQI
32AQI
33AQI
32AQI
36AQI
36AQI
48AQI
53AQI
53AQI
47AQI
45AQI
49AQI
53AQI
46AQI
45AQI
50AQI
41AQI
39AQI
44AQI
44AQI
42AQI
41AQI
43AQI
50AQI
53AQI
46AQI
45AQI
53AQI
47AQI
41AQI
37AQI
38AQI
44AQI
45AQI
47AQI
50AQI
50AQI
38AQI
38AQI
43AQI
31AQI
32AQI
33AQI
39AQI
37AQI
31AQI
35AQI
37AQI
39AQI
32AQI
32AQI
32AQI
28AQI
30AQI
26AQI
26AQI
23AQI
21AQI
26AQI
28AQI
27AQI
34AQI
42AQI
26AQI
25AQI
28AQI
29AQI
37AQI
56AQI
61AQI
66AQI
51AQI
53AQI
46AQI
39AQI
48AQI
46AQI
45AQI
35AQI
46AQI
46AQI
32AQI
54AQI
No. of days
202543AQI
Highest AQI recorded in
October54AQI
Lowest AQI recorded in
September32AQI
202439AQI
Highest AQI recorded in
April52AQI
Lowest AQI recorded in
July23AQI
202342AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
August36AQI
202241AQI
Highest AQI recorded in
May48AQI
Lowest AQI recorded in
December34AQI
202139AQI
Highest AQI recorded in
May47AQI
Lowest AQI recorded in
August29AQI
202040AQI
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
September0AQI
Most & Least Polluted Years Over the Last 6 Years
Daitocho's annual 2025 AQI (43) shows an average percentage change of 6.6% (worsened AQI) compared to previous years: 2020 (40), 2021 (39), 2022 (41), 2023 (42), 2024 (39).