Nakano, Obiraki, Aomori, 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
Nakano, Obiraki, Aomori, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (12th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 52 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 12th Oct - 13th Oct 2025
Nakano, Obiraki, Aomori, Japan
5 AM12th Oct 2025
5 PM
4 AM13th Oct 2025
54AQI
36AQI
55AQI
47AQI
In the last 24 hours,
Nakano's AQI reached its highest point of 55 at 4 AM during the Night, while the lowest point, 36, was recorded at 11 AM during the Day between 12th Oct and 13th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Nakano, Obiraki, Aomori, Japan
20°C15/26°C
20°C14/25°C
20°C13/27°C
21°C16/28°C
21°C17/27°C
17°C11/22°C
15°C10/22°C
15°C10/20°C
16°C12/20°C
15°C10/21°C
16°C11/24°C
16°C10/25°C
16°C13/22°C
17°C12/24°C
16°C11/22°C
17°C10/24°C
16°C12/22°C
16°C11/24°C
17°C13/23°C
16°C12/23°C
16°C11/24°C
17°C11/26°C
20°C16/25°C
16°C13/19°C
15°C10/21°C
15°C11/21°C
12°C8/17°C
10°C6/16°C
11°C7/15°C
13°C11/15°C
--°C/°C
38AQI
35AQI
42AQI
40AQI
2025 Days Vs Air Quality
Nakano, Obiraki, Aomori, Japan
89%
255
11%
30
Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 286 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
Nakano, Obiraki, Aomori, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
26AQI
26AQI
25AQI
26AQI
29AQI
30AQI
29AQI
28AQI
27AQI
30AQI
29AQI
29AQI
35AQI
27AQI
26AQI
25AQI
26AQI
28AQI
41AQI
46AQI
42AQI
42AQI
40AQI
40AQI
32AQI
38AQI
30AQI
31AQI
29AQI
28AQI
28AQI
28AQI
31AQI
29AQI
30AQI
29AQI
30AQI
29AQI
30AQI
29AQI
31AQI
28AQI
32AQI
30AQI
31AQI
32AQI
34AQI
30AQI
30AQI
28AQI
27AQI
28AQI
29AQI
26AQI
31AQI
31AQI
31AQI
38AQI
41AQI
40AQI
38AQI
36AQI
30AQI
29AQI
31AQI
32AQI
34AQI
38AQI
43AQI
49AQI
50AQI
44AQI
37AQI
28AQI
21AQI
22AQI
23AQI
38AQI
45AQI
47AQI
37AQI
50AQI
57AQI
47AQI
53AQI
41AQI
36AQI
35AQI
33AQI
44AQI
27AQI
26AQI
22AQI
33AQI
37AQI
29AQI
32AQI
30AQI
50AQI
46AQI
48AQI
32AQI
25AQI
34AQI
28AQI
40AQI
42AQI
48AQI
33AQI
46AQI
38AQI
36AQI
26AQI
24AQI
55AQI
45AQI
50AQI
29AQI
27AQI
28AQI
28AQI
37AQI
32AQI
33AQI
37AQI
28AQI
39AQI
43AQI
28AQI
29AQI
33AQI
34AQI
48AQI
48AQI
55AQI
46AQI
38AQI
48AQI
45AQI
44AQI
42AQI
35AQI
38AQI
22AQI
29AQI
31AQI
35AQI
35AQI
36AQI
34AQI
31AQI
39AQI
37AQI
34AQI
32AQI
33AQI
46AQI
51AQI
52AQI
59AQI
51AQI
41AQI
39AQI
44AQI
33AQI
33AQI
35AQI
38AQI
42AQI
45AQI
48AQI
60AQI
53AQI
52AQI
53AQI
50AQI
45AQI
45AQI
47AQI
48AQI
49AQI
50AQI
54AQI
57AQI
54AQI
55AQI
56AQI
55AQI
56AQI
53AQI
49AQI
49AQI
51AQI
49AQI
45AQI
47AQI
45AQI
43AQI
42AQI
41AQI
38AQI
41AQI
37AQI
36AQI
39AQI
44AQI
40AQI
39AQI
41AQI
45AQI
44AQI
40AQI
40AQI
40AQI
43AQI
41AQI
45AQI
34AQI
31AQI
30AQI
37AQI
35AQI
33AQI
34AQI
36AQI
34AQI
33AQI
36AQI
36AQI
39AQI
44AQI
45AQI
45AQI
48AQI
46AQI
41AQI
48AQI
39AQI
34AQI
41AQI
43AQI
43AQI
43AQI
35AQI
36AQI
42AQI
37AQI
30AQI
31AQI
31AQI
40AQI
33AQI
35AQI
36AQI
30AQI
33AQI
31AQI
39AQI
36AQI
27AQI
27AQI
26AQI
25AQI
23AQI
27AQI
29AQI
25AQI
34AQI
26AQI
23AQI
24AQI
34AQI
46AQI
54AQI
57AQI
69AQI
65AQI
53AQI
45AQI
51AQI
57AQI
52AQI
49AQI
52AQI
31AQI
30AQI
38AQI
36AQI
37AQI
44AQI
47AQI
39AQI
32AQI
54AQI
No. of days
202538AQI
Highest AQI recorded in
October54AQI
Lowest AQI recorded in
February30AQI
202433AQI
Highest AQI recorded in
April48AQI
Lowest AQI recorded in
December25AQI
202337AQI
Highest AQI recorded in
March59AQI
Lowest AQI recorded in
December27AQI
202233AQI
Highest AQI recorded in
August58AQI
Lowest AQI recorded in
December23AQI
202131AQI
Highest AQI recorded in
June37AQI
Lowest AQI recorded in
November24AQI
202029AQI
Highest AQI recorded in
March40AQI
Lowest AQI recorded in
November24AQI
Most & Least Polluted Years Over the Last 6 Years
Nakano's annual 2025 AQI (38) shows an average percentage change of 17.3% (worsened AQI) compared to previous years: 2020 (29), 2021 (31), 2022 (33), 2023 (37), 2024 (33).