Naka, Tokushima, 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
Naka, Tokushima, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (28th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 29 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Naka, Tokushima, Japan
5 AM29th Sep 2025
6 PM
4 AM30th Sep 2025
AQI
AQI
45AQI
15AQI
In the last 24 hours,
Naka's AQI reached its highest point of 45 at 6 AM during the Night, while the lowest point, 15, was recorded at 12 AM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Naka, Tokushima, Japan
28°C25/30°C
27°C25/30°C
27°C25/30°C
27°C25/29°C
25°C24/25°C
27°C26/30°C
27°C24/29°C
27°C25/29°C
27°C25/30°C
27°C26/30°C
27°C25/30°C
25°C24/27°C
26°C24/28°C
27°C24/29°C
27°C26/29°C
27°C25/29°C
27°C25/29°C
27°C25/29°C
26°C24/29°C
25°C23/27°C
26°C24/28°C
25°C22/27°C
23°C21/25°C
23°C23/24°C
24°C23/24°C
24°C24/25°C
25°C23/27°C
24°C21/26°C
23°C21/26°C
--°C/°C
--°C/°C
33AQI
29AQI
33AQI
32AQI
2025 Days Vs Air Quality
Naka, Tokushima, Japan
76%
206
24%
64
0.3%
1
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2025, 76% of 272 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
Naka, Tokushima, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
32AQI
41AQI
36AQI
32AQI
31AQI
30AQI
31AQI
26AQI
27AQI
26AQI
26AQI
28AQI
30AQI
38AQI
34AQI
32AQI
29AQI
29AQI
30AQI
37AQI
35AQI
47AQI
50AQI
61AQI
42AQI
40AQI
29AQI
31AQI
28AQI
37AQI
57AQI
58AQI
39AQI
42AQI
36AQI
37AQI
32AQI
32AQI
32AQI
30AQI
31AQI
32AQI
31AQI
31AQI
33AQI
30AQI
45AQI
41AQI
36AQI
35AQI
31AQI
32AQI
36AQI
33AQI
34AQI
33AQI
35AQI
54AQI
52AQI
64AQI
69AQI
47AQI
41AQI
30AQI
37AQI
33AQI
37AQI
38AQI
38AQI
33AQI
36AQI
48AQI
37AQI
33AQI
22AQI
34AQI
23AQI
33AQI
34AQI
47AQI
51AQI
58AQI
58AQI
65AQI
76AQI
56AQI
54AQI
45AQI
39AQI
34AQI
33AQI
28AQI
25AQI
26AQI
36AQI
42AQI
43AQI
39AQI
56AQI
54AQI
53AQI
54AQI
39AQI
45AQI
25AQI
37AQI
45AQI
54AQI
56AQI
44AQI
39AQI
40AQI
33AQI
30AQI
52AQI
53AQI
53AQI
48AQI
45AQI
56AQI
51AQI
38AQI
44AQI
39AQI
38AQI
27AQI
31AQI
27AQI
38AQI
29AQI
32AQI
43AQI
50AQI
57AQI
53AQI
50AQI
40AQI
55AQI
56AQI
62AQI
42AQI
37AQI
49AQI
36AQI
29AQI
29AQI
34AQI
34AQI
32AQI
31AQI
35AQI
42AQI
49AQI
28AQI
46AQI
44AQI
49AQI
54AQI
59AQI
40AQI
34AQI
38AQI
51AQI
43AQI
31AQI
36AQI
45AQI
43AQI
50AQI
51AQI
56AQI
52AQI
52AQI
49AQI
38AQI
37AQI
47AQI
51AQI
57AQI
56AQI
58AQI
63AQI
77AQI
77AQI
79AQI
101AQI
87AQI
72AQI
79AQI
87AQI
67AQI
52AQI
50AQI
47AQI
43AQI
53AQI
56AQI
41AQI
38AQI
35AQI
32AQI
30AQI
30AQI
29AQI
28AQI
26AQI
26AQI
23AQI
24AQI
29AQI
32AQI
36AQI
45AQI
44AQI
48AQI
59AQI
51AQI
51AQI
46AQI
47AQI
47AQI
47AQI
36AQI
36AQI
40AQI
46AQI
48AQI
46AQI
43AQI
46AQI
45AQI
43AQI
41AQI
40AQI
48AQI
51AQI
51AQI
55AQI
53AQI
53AQI
54AQI
54AQI
53AQI
38AQI
33AQI
36AQI
30AQI
24AQI
27AQI
32AQI
31AQI
34AQI
32AQI
29AQI
29AQI
30AQI
34AQI
41AQI
46AQI
48AQI
37AQI
31AQI
39AQI
27AQI
28AQI
29AQI
27AQI
25AQI
31AQI
27AQI
29AQI
35AQI
37AQI
44AQI
43AQI
40AQI
46AQI
50AQI
47AQI
32AQI
No. of days
202542AQI
Highest AQI recorded in
July50AQI
Lowest AQI recorded in
September32AQI
202435AQI
Highest AQI recorded in
July43AQI
Lowest AQI recorded in
December29AQI
202337AQI
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
August28AQI
202237AQI
Highest AQI recorded in
May45AQI
Lowest AQI recorded in
August22AQI
202135AQI
Highest AQI recorded in
May39AQI
Lowest AQI recorded in
January29AQI
202035AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
December27AQI
Most & Least Polluted Years Over the Last 6 Years
Naka's annual 2025 AQI (42) shows an average percentage change of 16.2% (worsened AQI) compared to previous years: 2020 (35), 2021 (35), 2022 (37), 2023 (37), 2024 (35).