Nobeoka, Miyazaki, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Nobeoka, Miyazaki, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 29 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 22nd Sep - 23rd Sep 2025
Nobeoka, Miyazaki, Japan
5 AM22nd Sep 2025
6 PM
4 AM23rd Sep 2025
AQI
AQI
49AQI
30AQI
In the last 24 hours,
Nobeoka's AQI reached its highest point of 49 at 7 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 22nd Sep and 23rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Nobeoka, Miyazaki, Japan
26°C23/30°C
26°C23/30°C
26°C23/29°C
26°C23/30°C
26°C22/29°C
26°C23/30°C
26°C23/31°C
26°C23/30°C
27°C24/31°C
27°C23/31°C
26°C22/30°C
25°C24/26°C
27°C24/32°C
26°C23/31°C
27°C22/32°C
27°C23/31°C
27°C23/31°C
26°C23/30°C
25°C23/28°C
25°C21/29°C
27°C23/31°C
27°C24/31°C
26°C23/31°C
26°C23/30°C
26°C23/30°C
26°C21/30°C
25°C23/28°C
26°C22/30°C
25°C22/28°C
--°C/°C
--°C/°C
37AQI
28AQI
39AQI
33AQI
2025 Days Vs Air Quality
Nobeoka, Miyazaki, Japan
82%
217
18%
47
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2025, 82% of 265 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
Nobeoka, Miyazaki, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
32AQI
35AQI
31AQI
32AQI
43AQI
32AQI
37AQI
30AQI
30AQI
28AQI
35AQI
41AQI
41AQI
42AQI
34AQI
39AQI
34AQI
39AQI
37AQI
57AQI
54AQI
61AQI
63AQI
46AQI
42AQI
35AQI
32AQI
31AQI
35AQI
41AQI
42AQI
33AQI
43AQI
31AQI
37AQI
32AQI
32AQI
30AQI
30AQI
30AQI
36AQI
38AQI
31AQI
35AQI
31AQI
34AQI
45AQI
33AQI
39AQI
34AQI
35AQI
43AQI
35AQI
39AQI
35AQI
37AQI
55AQI
44AQI
64AQI
63AQI
46AQI
34AQI
31AQI
35AQI
33AQI
38AQI
38AQI
38AQI
31AQI
39AQI
50AQI
39AQI
35AQI
23AQI
47AQI
35AQI
38AQI
46AQI
55AQI
59AQI
66AQI
58AQI
67AQI
69AQI
55AQI
54AQI
52AQI
43AQI
41AQI
42AQI
33AQI
35AQI
36AQI
43AQI
49AQI
42AQI
40AQI
54AQI
51AQI
57AQI
56AQI
44AQI
55AQI
30AQI
45AQI
48AQI
55AQI
49AQI
36AQI
41AQI
34AQI
33AQI
39AQI
50AQI
52AQI
52AQI
44AQI
49AQI
50AQI
49AQI
43AQI
48AQI
42AQI
40AQI
29AQI
36AQI
34AQI
35AQI
38AQI
35AQI
49AQI
53AQI
57AQI
52AQI
50AQI
44AQI
47AQI
56AQI
56AQI
32AQI
40AQI
43AQI
37AQI
32AQI
31AQI
36AQI
33AQI
32AQI
37AQI
37AQI
46AQI
47AQI
28AQI
45AQI
42AQI
53AQI
54AQI
53AQI
31AQI
29AQI
31AQI
42AQI
45AQI
34AQI
31AQI
30AQI
31AQI
38AQI
37AQI
45AQI
44AQI
33AQI
33AQI
33AQI
35AQI
39AQI
39AQI
41AQI
42AQI
46AQI
51AQI
61AQI
78AQI
82AQI
83AQI
69AQI
65AQI
67AQI
69AQI
62AQI
55AQI
53AQI
49AQI
48AQI
55AQI
53AQI
48AQI
47AQI
40AQI
35AQI
31AQI
29AQI
28AQI
26AQI
30AQI
30AQI
32AQI
27AQI
25AQI
22AQI
31AQI
42AQI
47AQI
48AQI
47AQI
46AQI
45AQI
40AQI
38AQI
35AQI
42AQI
29AQI
35AQI
40AQI
42AQI
42AQI
41AQI
41AQI
45AQI
52AQI
43AQI
44AQI
46AQI
44AQI
41AQI
42AQI
39AQI
37AQI
41AQI
47AQI
47AQI
41AQI
38AQI
36AQI
33AQI
26AQI
23AQI
29AQI
33AQI
27AQI
27AQI
26AQI
30AQI
28AQI
31AQI
28AQI
35AQI
45AQI
39AQI
28AQI
34AQI
44AQI
29AQI
39AQI
36AQI
46AQI
45AQI
41AQI
39AQI
48AQI
42AQI
32AQI
No. of days
202541AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
September32AQI
202438AQI
Highest AQI recorded in
September45AQI
Lowest AQI recorded in
July27AQI
202341AQI
Highest AQI recorded in
April50AQI
Lowest AQI recorded in
August33AQI
202241AQI
Highest AQI recorded in
March49AQI
Lowest AQI recorded in
August27AQI
202137AQI
Highest AQI recorded in
May44AQI
Lowest AQI recorded in
July30AQI
202038AQI
Highest AQI recorded in
August53AQI
Lowest AQI recorded in
July29AQI
Most & Least Polluted Years Over the Last 6 Years
Nobeoka's annual 2025 AQI (41) shows an average percentage change of 5.5% (worsened AQI) compared to previous years: 2020 (38), 2021 (37), 2022 (41), 2023 (41), 2024 (38).