Nonoichi, Shirayamamachi, Ishikawa, 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
Nonoichi, Shirayamamachi, Ishikawa, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (11th October ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 47 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Oct - 12th Oct 2025
Nonoichi, Shirayamamachi, Ishikawa, Japan
5 AM11th Oct 2025
5 PM
4 AM12th Oct 2025
AQI
AQI
57AQI
37AQI
In the last 24 hours,
Nonoichi's AQI reached its highest point of 57 at 10 PM during the Night, while the lowest point, 37, was recorded at 6 AM during the Night between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Nonoichi, Shirayamamachi, Ishikawa, Japan
24°C21/28°C
26°C22/32°C
24°C22/27°C
25°C22/29°C
25°C21/30°C
26°C23/30°C
22°C19/24°C
21°C18/25°C
23°C20/28°C
21°C19/23°C
19°C16/24°C
20°C17/25°C
22°C17/27°C
23°C20/25°C
22°C20/26°C
20°C17/25°C
21°C17/27°C
21°C17/23°C
20°C16/25°C
21°C19/23°C
20°C17/24°C
20°C16/24°C
20°C18/23°C
21°C20/23°C
21°C19/23°C
21°C17/24°C
21°C19/23°C
19°C16/22°C
18°C15/22°C
--°C/°C
--°C/°C
34AQI
31AQI
35AQI
32AQI
2025 Days Vs Air Quality
Nonoichi, Shirayamamachi, Ishikawa, Japan
88%
250
12%
34
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 284 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
Nonoichi, Shirayamamachi, Ishikawa, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
30AQI
31AQI
28AQI
28AQI
26AQI
29AQI
28AQI
29AQI
26AQI
25AQI
26AQI
28AQI
31AQI
27AQI
26AQI
26AQI
27AQI
28AQI
32AQI
36AQI
33AQI
46AQI
38AQI
38AQI
31AQI
26AQI
29AQI
29AQI
31AQI
34AQI
44AQI
32AQI
36AQI
30AQI
32AQI
31AQI
32AQI
31AQI
30AQI
30AQI
30AQI
27AQI
32AQI
31AQI
32AQI
33AQI
37AQI
31AQI
31AQI
30AQI
30AQI
32AQI
32AQI
32AQI
32AQI
39AQI
47AQI
42AQI
45AQI
40AQI
40AQI
36AQI
28AQI
33AQI
33AQI
35AQI
35AQI
37AQI
35AQI
31AQI
45AQI
35AQI
32AQI
23AQI
22AQI
25AQI
20AQI
34AQI
46AQI
50AQI
63AQI
58AQI
63AQI
52AQI
51AQI
38AQI
33AQI
27AQI
27AQI
25AQI
23AQI
22AQI
23AQI
25AQI
28AQI
29AQI
30AQI
26AQI
29AQI
34AQI
32AQI
25AQI
29AQI
23AQI
29AQI
31AQI
39AQI
35AQI
29AQI
29AQI
30AQI
22AQI
22AQI
28AQI
38AQI
32AQI
33AQI
38AQI
45AQI
37AQI
34AQI
32AQI
30AQI
30AQI
25AQI
24AQI
25AQI
25AQI
25AQI
23AQI
36AQI
40AQI
45AQI
43AQI
40AQI
30AQI
36AQI
40AQI
45AQI
51AQI
41AQI
38AQI
33AQI
30AQI
27AQI
28AQI
28AQI
32AQI
28AQI
27AQI
30AQI
35AQI
29AQI
31AQI
30AQI
34AQI
39AQI
45AQI
50AQI
38AQI
32AQI
33AQI
32AQI
30AQI
23AQI
28AQI
29AQI
37AQI
43AQI
49AQI
53AQI
61AQI
45AQI
44AQI
40AQI
42AQI
52AQI
39AQI
41AQI
51AQI
52AQI
75AQI
86AQI
72AQI
68AQI
60AQI
59AQI
59AQI
58AQI
54AQI
54AQI
50AQI
51AQI
47AQI
40AQI
43AQI
35AQI
34AQI
32AQI
32AQI
34AQI
35AQI
41AQI
44AQI
43AQI
42AQI
35AQI
36AQI
36AQI
38AQI
42AQI
44AQI
44AQI
47AQI
54AQI
51AQI
48AQI
42AQI
37AQI
34AQI
32AQI
31AQI
32AQI
33AQI
36AQI
37AQI
38AQI
40AQI
43AQI
47AQI
48AQI
51AQI
49AQI
50AQI
56AQI
56AQI
55AQI
51AQI
49AQI
53AQI
53AQI
52AQI
46AQI
40AQI
37AQI
36AQI
32AQI
28AQI
32AQI
38AQI
37AQI
38AQI
30AQI
31AQI
27AQI
33AQI
34AQI
33AQI
39AQI
27AQI
25AQI
26AQI
22AQI
23AQI
27AQI
29AQI
24AQI
26AQI
21AQI
22AQI
26AQI
27AQI
31AQI
34AQI
45AQI
51AQI
31AQI
45AQI
50AQI
53AQI
46AQI
50AQI
47AQI
30AQI
33AQI
38AQI
29AQI
33AQI
39AQI
48AQI
45AQI
31AQI
44AQI
No. of days
202537AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
April29AQI
202432AQI
Highest AQI recorded in
June43AQI
Lowest AQI recorded in
January19AQI
202320AQI
Highest AQI recorded in
November22AQI
Lowest AQI recorded in
December20AQI
202022AQI
Highest AQI recorded in
September22AQI
Lowest AQI recorded in
September22AQI
Most & Least Polluted Years Over the Last 4 Years
Nonoichi's annual 2025 AQI (37) shows an average percentage change of 54.9% (worsened AQI) compared to previous years: 2020 (22), 2023 (20), 2024 (32).