Izumicho, Oyabe, Toyama, 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
Izumicho, Oyabe, Toyama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (26th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 31 of Good air quality, showing improvement over 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 26th Sep - 27th Sep 2025
Izumicho, Oyabe, Toyama, Japan
5 AM26th Sep 2025
6 PM
4 AM27th Sep 2025
37AQI
12AQI
37AQI
17AQI
In the last 24 hours,
Izumicho's AQI reached its highest point of 37 at 3 PM during the Day, while the lowest point, 12, was recorded at 5 AM during the Day between 26th Sep and 27th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Izumicho, Oyabe, Toyama, Japan
24°C19/29°C
26°C21/32°C
26°C22/32°C
27°C22/33°C
28°C23/34°C
27°C23/34°C
25°C22/30°C
25°C22/30°C
23°C20/27°C
23°C19/29°C
25°C20/32°C
24°C22/28°C
25°C21/30°C
24°C21/28°C
23°C21/27°C
23°C20/28°C
24°C20/31°C
24°C22/27°C
25°C21/30°C
25°C21/30°C
25°C21/31°C
22°C19/23°C
20°C18/24°C
22°C19/28°C
20°C17/22°C
18°C14/23°C
20°C16/26°C
21°C16/28°C
21°C18/25°C
22°C18/26°C
--°C/°C
35AQI
30AQI
34AQI
31AQI
2025 Days Vs Air Quality
Izumicho, Oyabe, Toyama, Japan
84%
227
16%
42
Total number of days with different AQI categories in last 270 days in 2025 (95 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% of 270 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
Izumicho, Oyabe, Toyama, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
28AQI
28AQI
25AQI
24AQI
31AQI
25AQI
25AQI
23AQI
21AQI
23AQI
22AQI
22AQI
28AQI
22AQI
24AQI
26AQI
26AQI
28AQI
32AQI
38AQI
34AQI
46AQI
35AQI
37AQI
29AQI
27AQI
30AQI
30AQI
32AQI
30AQI
41AQI
29AQI
36AQI
33AQI
33AQI
33AQI
33AQI
31AQI
31AQI
30AQI
31AQI
30AQI
32AQI
31AQI
30AQI
32AQI
37AQI
30AQI
31AQI
31AQI
31AQI
32AQI
33AQI
33AQI
33AQI
42AQI
48AQI
44AQI
48AQI
38AQI
41AQI
35AQI
30AQI
31AQI
33AQI
36AQI
34AQI
37AQI
35AQI
32AQI
47AQI
35AQI
36AQI
24AQI
24AQI
26AQI
21AQI
30AQI
47AQI
48AQI
61AQI
58AQI
71AQI
67AQI
66AQI
50AQI
39AQI
33AQI
33AQI
30AQI
26AQI
22AQI
22AQI
29AQI
32AQI
34AQI
39AQI
30AQI
36AQI
45AQI
38AQI
30AQI
35AQI
22AQI
35AQI
37AQI
49AQI
51AQI
42AQI
39AQI
45AQI
27AQI
25AQI
37AQI
46AQI
42AQI
42AQI
44AQI
53AQI
51AQI
39AQI
37AQI
33AQI
33AQI
31AQI
25AQI
29AQI
29AQI
27AQI
23AQI
40AQI
46AQI
52AQI
52AQI
53AQI
38AQI
49AQI
47AQI
57AQI
65AQI
48AQI
44AQI
39AQI
32AQI
30AQI
32AQI
30AQI
35AQI
31AQI
27AQI
30AQI
39AQI
39AQI
36AQI
37AQI
42AQI
47AQI
54AQI
61AQI
59AQI
47AQI
46AQI
39AQI
35AQI
26AQI
30AQI
31AQI
35AQI
40AQI
46AQI
50AQI
55AQI
45AQI
48AQI
46AQI
45AQI
52AQI
43AQI
47AQI
52AQI
52AQI
69AQI
78AQI
79AQI
71AQI
63AQI
63AQI
61AQI
60AQI
56AQI
55AQI
51AQI
53AQI
51AQI
45AQI
46AQI
40AQI
39AQI
33AQI
33AQI
35AQI
37AQI
43AQI
46AQI
47AQI
43AQI
35AQI
36AQI
36AQI
38AQI
44AQI
47AQI
44AQI
46AQI
55AQI
50AQI
46AQI
40AQI
37AQI
35AQI
32AQI
31AQI
31AQI
32AQI
33AQI
36AQI
36AQI
40AQI
43AQI
46AQI
50AQI
50AQI
49AQI
51AQI
54AQI
54AQI
55AQI
51AQI
48AQI
52AQI
51AQI
51AQI
43AQI
39AQI
36AQI
29AQI
25AQI
27AQI
32AQI
33AQI
35AQI
34AQI
29AQI
31AQI
26AQI
31AQI
30AQI
34AQI
39AQI
26AQI
26AQI
26AQI
22AQI
23AQI
29AQI
34AQI
27AQI
31AQI
28AQI
34AQI
40AQI
36AQI
39AQI
43AQI
50AQI
44AQI
31AQI
No. of days
202539AQI
Highest AQI recorded in
July50AQI
Lowest AQI recorded in
January28AQI
202432AQI
Highest AQI recorded in
April46AQI
Lowest AQI recorded in
December25AQI
202333AQI
Highest AQI recorded in
April43AQI
Lowest AQI recorded in
October26AQI
202232AQI
Highest AQI recorded in
May43AQI
Lowest AQI recorded in
August23AQI
202130AQI
Highest AQI recorded in
June40AQI
Lowest AQI recorded in
January23AQI
202027AQI
Highest AQI recorded in
August47AQI
Lowest AQI recorded in
December16AQI
Most & Least Polluted Years Over the Last 6 Years
Izumicho's annual 2025 AQI (39) shows an average percentage change of 25.2% (worsened AQI) compared to previous years: 2020 (27), 2021 (30), 2022 (32), 2023 (33), 2024 (32).