Kitatakumachi Oaza Kosamurai, Omachi, Saga, 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
Kitatakumachi Oaza Kosamurai, Omachi, Saga, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (11th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 64 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Oct - 12th Oct 2025
Kitatakumachi Oaza Kosamurai, Omachi, Saga, Japan
6 AM11th Oct 2025
6 PM
5 AM12th Oct 2025
AQI
AQI
79AQI
59AQI
In the last 24 hours,
Kitatakumachi Oaza Kosamurai's AQI reached its highest point of 79 at 12 AM during the Night, while the lowest point, 59, was recorded at 6 AM during the Night between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Kitatakumachi Oaza Kosamurai, Omachi, Saga, Japan
26°C23/31°C
26°C24/29°C
27°C24/31°C
27°C24/32°C
27°C24/32°C
27°C24/31°C
25°C23/29°C
25°C21/30°C
24°C23/26°C
23°C20/27°C
23°C19/28°C
25°C21/29°C
25°C22/29°C
25°C23/28°C
26°C22/30°C
22°C20/23°C
24°C20/27°C
23°C21/26°C
22°C18/27°C
22°C18/28°C
23°C18/28°C
20°C19/21°C
24°C21/27°C
25°C22/29°C
24°C20/28°C
24°C20/29°C
24°C21/28°C
22°C19/26°C
22°C17/28°C
--°C/°C
--°C/°C
39AQI
32AQI
39AQI
39AQI
2025 Days Vs Air Quality
Kitatakumachi Oaza Kosamurai, Omachi, Saga, Japan
77%
219
23%
65
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Under WHO’s Safe Air Quality Limits: 77%
Health Risk Level:
Low
In 2025, 77% 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
Kitatakumachi Oaza Kosamurai, Omachi, Saga, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
35AQI
44AQI
35AQI
38AQI
38AQI
53AQI
32AQI
42AQI
30AQI
33AQI
35AQI
37AQI
44AQI
49AQI
48AQI
47AQI
54AQI
56AQI
54AQI
64AQI
73AQI
76AQI
67AQI
70AQI
46AQI
44AQI
44AQI
37AQI
35AQI
39AQI
49AQI
42AQI
36AQI
45AQI
32AQI
41AQI
32AQI
38AQI
31AQI
31AQI
32AQI
42AQI
45AQI
35AQI
44AQI
33AQI
41AQI
42AQI
36AQI
37AQI
36AQI
34AQI
40AQI
40AQI
38AQI
39AQI
46AQI
64AQI
58AQI
59AQI
38AQI
42AQI
30AQI
33AQI
32AQI
35AQI
40AQI
46AQI
49AQI
50AQI
52AQI
56AQI
39AQI
32AQI
31AQI
49AQI
46AQI
44AQI
55AQI
56AQI
63AQI
63AQI
55AQI
64AQI
62AQI
54AQI
62AQI
52AQI
41AQI
44AQI
44AQI
36AQI
37AQI
38AQI
45AQI
43AQI
43AQI
42AQI
56AQI
47AQI
58AQI
52AQI
52AQI
53AQI
33AQI
48AQI
43AQI
52AQI
44AQI
42AQI
38AQI
38AQI
24AQI
37AQI
50AQI
49AQI
51AQI
43AQI
51AQI
52AQI
47AQI
43AQI
44AQI
43AQI
43AQI
41AQI
37AQI
47AQI
34AQI
40AQI
50AQI
54AQI
58AQI
60AQI
57AQI
63AQI
40AQI
51AQI
53AQI
42AQI
33AQI
35AQI
44AQI
26AQI
35AQI
38AQI
45AQI
50AQI
52AQI
45AQI
45AQI
50AQI
56AQI
38AQI
45AQI
46AQI
52AQI
65AQI
64AQI
40AQI
30AQI
41AQI
38AQI
34AQI
28AQI
26AQI
27AQI
27AQI
32AQI
34AQI
31AQI
28AQI
25AQI
22AQI
22AQI
24AQI
27AQI
28AQI
29AQI
30AQI
36AQI
51AQI
58AQI
62AQI
64AQI
57AQI
51AQI
49AQI
53AQI
57AQI
56AQI
50AQI
48AQI
45AQI
41AQI
47AQI
50AQI
53AQI
39AQI
39AQI
32AQI
37AQI
42AQI
44AQI
40AQI
33AQI
29AQI
25AQI
26AQI
27AQI
29AQI
31AQI
45AQI
50AQI
51AQI
45AQI
44AQI
44AQI
48AQI
39AQI
34AQI
38AQI
32AQI
35AQI
36AQI
39AQI
42AQI
41AQI
41AQI
48AQI
47AQI
42AQI
39AQI
46AQI
42AQI
39AQI
39AQI
37AQI
39AQI
43AQI
45AQI
47AQI
47AQI
37AQI
38AQI
40AQI
27AQI
25AQI
31AQI
37AQI
30AQI
31AQI
31AQI
34AQI
33AQI
31AQI
29AQI
28AQI
26AQI
26AQI
22AQI
26AQI
22AQI
21AQI
25AQI
27AQI
24AQI
34AQI
33AQI
22AQI
23AQI
23AQI
33AQI
40AQI
55AQI
58AQI
64AQI
47AQI
57AQI
55AQI
62AQI
55AQI
61AQI
64AQI
47AQI
40AQI
48AQI
45AQI
45AQI
36AQI
44AQI
42AQI
29AQI
56AQI
No. of days
202542AQI
Highest AQI recorded in
October56AQI
Lowest AQI recorded in
September29AQI
202438AQI
Highest AQI recorded in
April53AQI
Lowest AQI recorded in
July20AQI
202343AQI
Highest AQI recorded in
April53AQI
Lowest AQI recorded in
August31AQI
202242AQI
Highest AQI recorded in
March50AQI
Lowest AQI recorded in
September33AQI
202140AQI
Highest AQI recorded in
May47AQI
Lowest AQI recorded in
August25AQI
202040AQI
Highest AQI recorded in
April52AQI
Lowest AQI recorded in
July21AQI
Most & Least Polluted Years Over the Last 6 Years
Kitatakumachi Oaza Kosamurai's annual 2025 AQI (42) shows an average percentage change of 4.07% (worsened AQI) compared to previous years: 2020 (40), 2021 (40), 2022 (42), 2023 (43), 2024 (38).