Izumigaoka, Utsunomiya, Tochigi, 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
Izumigaoka, Utsunomiya, Tochigi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (17th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 43 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Oct - 18th Oct 2025
Izumigaoka, Utsunomiya, Tochigi, Japan
5 AM17th Oct 2025
5 PM
4 AM18th Oct 2025
56AQI
40AQI
67AQI
53AQI
In the last 24 hours,
Izumigaoka's AQI reached its highest point of 67 at 10 PM during the Night, while the lowest point, 40, was recorded at 6 AM during the Day between 17th Oct and 18th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Izumigaoka, Utsunomiya, Tochigi, Japan
26°C21/33°C
21°C20/24°C
21°C19/23°C
23°C20/29°C
21°C17/25°C
20°C17/24°C
20°C16/25°C
23°C18/28°C
25°C21/31°C
23°C21/28°C
22°C19/25°C
25°C21/31°C
22°C19/26°C
19°C17/19°C
20°C16/26°C
21°C17/25°C
21°C18/24°C
23°C20/26°C
23°C19/28°C
19°C18/19°C
22°C18/27°C
19°C16/20°C
18°C14/22°C
16°C15/18°C
19°C15/25°C
20°C18/21°C
16°C15/19°C
18°C14/23°C
17°C16/18°C
19°C16/24°C
--°C/°C
44AQI
42AQI
47AQI
43AQI
2025 Days Vs Air Quality
Izumigaoka, Utsunomiya, Tochigi, Japan
83%
242
17%
48
Total number of days with different AQI categories in last 291 days in 2025 (74 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 291 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
Izumigaoka, Utsunomiya, Tochigi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
29AQI
26AQI
25AQI
31AQI
48AQI
31AQI
33AQI
33AQI
28AQI
28AQI
31AQI
33AQI
40AQI
37AQI
35AQI
35AQI
32AQI
55AQI
41AQI
44AQI
38AQI
42AQI
47AQI
36AQI
35AQI
32AQI
37AQI
29AQI
32AQI
30AQI
29AQI
37AQI
33AQI
31AQI
32AQI
29AQI
28AQI
30AQI
24AQI
26AQI
25AQI
34AQI
33AQI
31AQI
28AQI
40AQI
35AQI
30AQI
28AQI
28AQI
27AQI
28AQI
28AQI
29AQI
41AQI
40AQI
45AQI
51AQI
56AQI
58AQI
37AQI
38AQI
27AQI
34AQI
32AQI
41AQI
38AQI
40AQI
48AQI
51AQI
50AQI
47AQI
45AQI
27AQI
26AQI
26AQI
20AQI
30AQI
39AQI
52AQI
55AQI
54AQI
71AQI
65AQI
70AQI
57AQI
37AQI
38AQI
32AQI
28AQI
22AQI
22AQI
24AQI
30AQI
27AQI
29AQI
42AQI
29AQI
47AQI
40AQI
39AQI
27AQI
25AQI
29AQI
26AQI
46AQI
54AQI
66AQI
62AQI
45AQI
52AQI
30AQI
40AQI
32AQI
49AQI
46AQI
55AQI
32AQI
46AQI
42AQI
33AQI
32AQI
33AQI
36AQI
31AQI
26AQI
31AQI
37AQI
20AQI
23AQI
21AQI
36AQI
41AQI
44AQI
50AQI
32AQI
38AQI
41AQI
55AQI
62AQI
50AQI
48AQI
40AQI
32AQI
29AQI
27AQI
26AQI
32AQI
27AQI
18AQI
23AQI
36AQI
38AQI
31AQI
39AQI
48AQI
54AQI
63AQI
58AQI
45AQI
36AQI
39AQI
42AQI
40AQI
29AQI
34AQI
35AQI
34AQI
38AQI
38AQI
35AQI
33AQI
33AQI
34AQI
29AQI
29AQI
33AQI
34AQI
38AQI
42AQI
43AQI
43AQI
49AQI
49AQI
52AQI
55AQI
65AQI
69AQI
74AQI
58AQI
49AQI
50AQI
53AQI
43AQI
43AQI
46AQI
41AQI
40AQI
38AQI
39AQI
41AQI
42AQI
41AQI
45AQI
45AQI
47AQI
44AQI
43AQI
44AQI
38AQI
39AQI
34AQI
39AQI
42AQI
52AQI
51AQI
48AQI
38AQI
36AQI
37AQI
37AQI
34AQI
32AQI
31AQI
34AQI
34AQI
39AQI
39AQI
42AQI
42AQI
46AQI
48AQI
47AQI
48AQI
54AQI
52AQI
55AQI
49AQI
47AQI
47AQI
52AQI
51AQI
47AQI
39AQI
37AQI
31AQI
28AQI
29AQI
30AQI
38AQI
39AQI
39AQI
33AQI
33AQI
32AQI
39AQI
38AQI
43AQI
43AQI
39AQI
31AQI
28AQI
26AQI
26AQI
25AQI
26AQI
39AQI
50AQI
30AQI
34AQI
33AQI
24AQI
32AQI
40AQI
51AQI
64AQI
53AQI
59AQI
54AQI
61AQI
60AQI
58AQI
54AQI
44AQI
54AQI
51AQI
48AQI
56AQI
43AQI
35AQI
32AQI
43AQI
38AQI
35AQI
38AQI
47AQI
43AQI
34AQI
52AQI
No. of days
202539AQI
Highest AQI recorded in
October52AQI
Lowest AQI recorded in
February32AQI
202437AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
January30AQI
202338AQI
Highest AQI recorded in
April45AQI
Lowest AQI recorded in
August32AQI
202237AQI
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
September30AQI
202139AQI
Highest AQI recorded in
June44AQI
Lowest AQI recorded in
November36AQI
202038AQI
Highest AQI recorded in
August49AQI
Lowest AQI recorded in
September29AQI
Most & Least Polluted Years Over the Last 6 Years
Izumigaoka's annual 2025 AQI (39) shows an average percentage change of 3.8% (worsened AQI) compared to previous years: 2020 (38), 2021 (39), 2022 (37), 2023 (38), 2024 (37).