Kitakyushu, Kitaku, Fukuoka, 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
Kitakyushu, Kitaku, Fukuoka, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (10th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 40 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Aug - 12th Aug 2025
Kitakyushu, Kitaku, Fukuoka, Japan
5 AM11th Aug 2025
7 PM
4 AM12th Aug 2025
AQI
AQI
44AQI
12AQI
In the last 24 hours,
Kitakyushu's AQI reached its highest point of 44 at 6 AM during the Night, while the lowest point, 12, was recorded at 10 AM during the Night between 11th Aug and 12th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Kitakyushu, Kitaku, Fukuoka, Japan
28°C25/32°C
24°C23/25°C
26°C23/29°C
27°C24/30°C
27°C25/32°C
24°C23/25°C
26°C24/29°C
27°C25/31°C
27°C25/31°C
27°C25/30°C
27°C24/30°C
28°C25/32°C
28°C25/32°C
28°C25/31°C
28°C26/31°C
28°C25/32°C
28°C25/32°C
28°C24/33°C
28°C25/32°C
29°C26/32°C
28°C24/32°C
28°C24/33°C
29°C26/31°C
29°C26/33°C
30°C26/34°C
28°C27/31°C
27°C25/30°C
23°C21/24°C
25°C24/25°C
--°C/°C
--°C/°C
43AQI
35AQI
43AQI
38AQI
2025 Days Vs Air Quality
Kitakyushu, Kitaku, Fukuoka, Japan
82%
181
18%
41
Total number of days with different AQI categories in last 223 days in 2025 (142 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2025, 82% of 223 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
Kitakyushu, Kitaku, Fukuoka, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
36AQI
42AQI
37AQI
34AQI
31AQI
54AQI
30AQI
40AQI
29AQI
31AQI
32AQI
31AQI
39AQI
49AQI
40AQI
40AQI
53AQI
47AQI
52AQI
54AQI
73AQI
83AQI
80AQI
73AQI
49AQI
43AQI
42AQI
36AQI
34AQI
41AQI
49AQI
46AQI
36AQI
51AQI
32AQI
42AQI
31AQI
42AQI
31AQI
36AQI
31AQI
44AQI
41AQI
34AQI
43AQI
32AQI
45AQI
40AQI
36AQI
35AQI
32AQI
35AQI
39AQI
40AQI
38AQI
42AQI
58AQI
65AQI
70AQI
69AQI
56AQI
47AQI
36AQI
34AQI
36AQI
34AQI
40AQI
43AQI
49AQI
48AQI
57AQI
56AQI
43AQI
38AQI
30AQI
44AQI
47AQI
47AQI
58AQI
59AQI
71AQI
70AQI
63AQI
62AQI
51AQI
50AQI
49AQI
47AQI
43AQI
43AQI
43AQI
42AQI
42AQI
43AQI
44AQI
43AQI
43AQI
45AQI
46AQI
45AQI
48AQI
45AQI
46AQI
44AQI
40AQI
45AQI
43AQI
46AQI
46AQI
44AQI
43AQI
43AQI
39AQI
41AQI
46AQI
45AQI
45AQI
44AQI
44AQI
46AQI
44AQI
43AQI
44AQI
42AQI
43AQI
40AQI
41AQI
43AQI
40AQI
41AQI
44AQI
49AQI
49AQI
53AQI
50AQI
49AQI
45AQI
48AQI
50AQI
47AQI
42AQI
41AQI
44AQI
40AQI
39AQI
39AQI
41AQI
43AQI
43AQI
43AQI
41AQI
46AQI
47AQI
39AQI
45AQI
45AQI
48AQI
50AQI
51AQI
47AQI
40AQI
42AQI
43AQI
43AQI
40AQI
39AQI
40AQI
38AQI
43AQI
41AQI
47AQI
41AQI
29AQI
31AQI
34AQI
35AQI
42AQI
42AQI
38AQI
39AQI
49AQI
59AQI
72AQI
70AQI
67AQI
63AQI
55AQI
54AQI
60AQI
69AQI
71AQI
61AQI
54AQI
48AQI
43AQI
51AQI
58AQI
53AQI
39AQI
39AQI
35AQI
33AQI
36AQI
31AQI
30AQI
27AQI
24AQI
23AQI
25AQI
25AQI
27AQI
32AQI
50AQI
49AQI
48AQI
47AQI
45AQI
48AQI
54AQI
48AQI
39AQI
40AQI
45AQI
41AQI
49AQI
44AQI
44AQI
42AQI
46AQI
47AQI
No. of days
202545AQI
Highest AQI recorded in
March49AQI
Lowest AQI recorded in
February41AQI
202440AQI
Highest AQI recorded in
September49AQI
Lowest AQI recorded in
July28AQI
202346AQI
Highest AQI recorded in
December46AQI
Lowest AQI recorded in
November46AQI
202018AQI
Highest AQI recorded in
August30AQI
Lowest AQI recorded in
July12AQI
Most & Least Polluted Years Over the Last 4 Years
Kitakyushu's annual 2025 AQI (45) shows an average percentage change of 53.5% (worsened AQI) compared to previous years: 2020 (18), 2023 (46), 2024 (40).