Tsushima, Hirado, 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
Tsushima, Hirado, Nagasaki, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 3 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: 3rd Aug - 4th Aug 2025
Tsushima, Hirado, Nagasaki, Japan
5 AM3rd Aug 2025
7 PM
4 AM4th Aug 2025
65AQI
44AQI
54AQI
48AQI
In the last 24 hours,
Tsushima's AQI reached its highest point of 65 at 11 AM during the Day, while the lowest point, 44, was recorded at 7 PM during the Day between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Tsushima, Hirado, Nagasaki, Japan
26°C25/28°C
26°C25/28°C
27°C25/29°C
26°C25/28°C
26°C25/28°C
26°C25/27°C
25°C24/26°C
25°C24/27°C
26°C24/28°C
25°C22/26°C
25°C24/26°C
26°C24/28°C
27°C25/29°C
25°C24/27°C
24°C23/26°C
27°C24/30°C
27°C25/29°C
27°C25/30°C
27°C25/30°C
28°C25/30°C
28°C26/30°C
28°C26/30°C
28°C26/30°C
28°C26/30°C
28°C26/30°C
27°C25/30°C
27°C25/30°C
28°C26/30°C
28°C25/31°C
28°C26/31°C
--°C/°C
50AQI
38AQI
50AQI
45AQI
2025 Days Vs Air Quality
Tsushima, Hirado, Nagasaki, Japan
64%
137
35%
76
0.9%
2
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 64%
Health Risk Level:
Moderate
In 2025, 64% of 216 days were within WHO’s safe air quality limits, and 36% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Tsushima, Hirado, Nagasaki, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
41AQI
54AQI
40AQI
41AQI
36AQI
78AQI
34AQI
47AQI
32AQI
37AQI
34AQI
39AQI
48AQI
67AQI
47AQI
47AQI
57AQI
59AQI
46AQI
72AQI
103AQI
79AQI
106AQI
63AQI
55AQI
43AQI
49AQI
42AQI
41AQI
44AQI
48AQI
42AQI
47AQI
48AQI
39AQI
40AQI
38AQI
44AQI
32AQI
37AQI
36AQI
47AQI
35AQI
39AQI
49AQI
39AQI
54AQI
45AQI
42AQI
40AQI
37AQI
34AQI
40AQI
41AQI
40AQI
40AQI
84AQI
65AQI
61AQI
53AQI
41AQI
45AQI
39AQI
34AQI
33AQI
42AQI
41AQI
55AQI
50AQI
59AQI
58AQI
53AQI
45AQI
34AQI
41AQI
51AQI
56AQI
62AQI
61AQI
71AQI
77AQI
80AQI
69AQI
78AQI
74AQI
51AQI
71AQI
52AQI
43AQI
51AQI
46AQI
40AQI
40AQI
48AQI
45AQI
53AQI
48AQI
63AQI
68AQI
63AQI
63AQI
58AQI
53AQI
48AQI
43AQI
56AQI
52AQI
53AQI
46AQI
36AQI
34AQI
28AQI
30AQI
42AQI
59AQI
46AQI
50AQI
41AQI
51AQI
53AQI
47AQI
45AQI
47AQI
44AQI
43AQI
43AQI
47AQI
47AQI
33AQI
37AQI
51AQI
55AQI
61AQI
61AQI
57AQI
56AQI
39AQI
54AQI
53AQI
36AQI
37AQI
41AQI
47AQI
31AQI
43AQI
43AQI
46AQI
49AQI
44AQI
45AQI
48AQI
58AQI
57AQI
55AQI
48AQI
44AQI
44AQI
51AQI
58AQI
49AQI
46AQI
50AQI
50AQI
44AQI
32AQI
34AQI
35AQI
35AQI
49AQI
46AQI
44AQI
42AQI
39AQI
45AQI
40AQI
42AQI
49AQI
50AQI
47AQI
47AQI
45AQI
53AQI
58AQI
61AQI
62AQI
54AQI
52AQI
54AQI
54AQI
53AQI
54AQI
55AQI
55AQI
52AQI
49AQI
51AQI
53AQI
53AQI
43AQI
45AQI
45AQI
41AQI
42AQI
50AQI
45AQI
39AQI
37AQI
37AQI
35AQI
34AQI
36AQI
39AQI
47AQI
52AQI
54AQI
53AQI
44AQI
54AQI
49AQI
46AQI
46AQI
48AQI
51AQI
No. of days
202549AQI
Highest AQI recorded in
March54AQI
Lowest AQI recorded in
February44AQI
202441AQI
Highest AQI recorded in
April55AQI
Lowest AQI recorded in
July27AQI
202345AQI
Highest AQI recorded in
April55AQI
Lowest AQI recorded in
September34AQI
202244AQI
Highest AQI recorded in
March53AQI
Lowest AQI recorded in
October36AQI
202142AQI
Highest AQI recorded in
May53AQI
Lowest AQI recorded in
July32AQI
202036AQI
Highest AQI recorded in
August55AQI
Lowest AQI recorded in
July18AQI
Most & Least Polluted Years Over the Last 6 Years
Tsushima's annual 2025 AQI (49) shows an average percentage change of 17.4% (worsened AQI) compared to previous years: 2020 (36), 2021 (42), 2022 (44), 2023 (45), 2024 (41).