Kojimaogawa, Tama, Okayama, 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
Kojimaogawa, Tama, Okayama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (14th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Oct - 15th Oct 2025
Kojimaogawa, Tama, Okayama, Japan
5 AM14th Oct 2025
5 PM
4 AM15th Oct 2025
60AQI
38AQI
73AQI
42AQI
In the last 24 hours,
Kojimaogawa's AQI reached its highest point of 73 at 9 PM during the Night, while the lowest point, 38, was recorded at 6 AM during the Day between 14th Oct and 15th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Kojimaogawa, Tama, Okayama, Japan
29°C27/30°C
28°C28/28°C
29°C27/30°C
27°C24/29°C
25°C23/27°C
26°C25/27°C
25°C23/28°C
24°C22/26°C
24°C23/25°C
26°C24/28°C
26°C25/27°C
26°C25/28°C
24°C23/25°C
23°C22/24°C
25°C22/27°C
23°C21/25°C
24°C22/26°C
24°C22/25°C
22°C21/23°C
24°C22/25°C
25°C24/27°C
24°C22/27°C
24°C22/25°C
25°C23/27°C
23°C21/26°C
22°C20/24°C
24°C23/25°C
25°C24/26°C
24°C23/26°C
24°C23/26°C
--°C/°C
42AQI
42AQI
46AQI
43AQI
2025 Days Vs Air Quality
Kojimaogawa, Tama, Okayama, Japan
66%
189
33%
96
0.7%
2
Total number of days with different AQI categories in last 288 days in 2025 (77 days remaining)
Under WHO’s Safe Air Quality Limits: 66%
Health Risk Level:
Moderate
In 2025, 66% of 288 days were within WHO’s safe air quality limits, and 34% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Kojimaogawa, Tama, Okayama, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
35AQI
41AQI
35AQI
36AQI
34AQI
51AQI
38AQI
38AQI
33AQI
32AQI
32AQI
34AQI
37AQI
49AQI
41AQI
39AQI
34AQI
32AQI
44AQI
49AQI
48AQI
65AQI
84AQI
75AQI
48AQI
44AQI
36AQI
39AQI
32AQI
45AQI
58AQI
69AQI
53AQI
57AQI
41AQI
40AQI
34AQI
38AQI
32AQI
34AQI
33AQI
37AQI
40AQI
33AQI
41AQI
31AQI
54AQI
43AQI
42AQI
37AQI
36AQI
34AQI
38AQI
36AQI
39AQI
40AQI
40AQI
65AQI
77AQI
106AQI
96AQI
59AQI
47AQI
36AQI
40AQI
37AQI
40AQI
40AQI
40AQI
41AQI
55AQI
56AQI
46AQI
38AQI
29AQI
41AQI
32AQI
39AQI
47AQI
57AQI
64AQI
67AQI
75AQI
73AQI
82AQI
82AQI
54AQI
49AQI
40AQI
38AQI
39AQI
45AQI
26AQI
41AQI
39AQI
50AQI
48AQI
49AQI
64AQI
66AQI
65AQI
58AQI
46AQI
53AQI
34AQI
50AQI
54AQI
63AQI
64AQI
60AQI
44AQI
51AQI
48AQI
33AQI
66AQI
61AQI
62AQI
60AQI
49AQI
64AQI
59AQI
41AQI
53AQI
41AQI
45AQI
33AQI
36AQI
31AQI
38AQI
33AQI
38AQI
52AQI
57AQI
64AQI
64AQI
59AQI
47AQI
48AQI
59AQI
68AQI
57AQI
41AQI
50AQI
40AQI
30AQI
33AQI
33AQI
42AQI
43AQI
44AQI
41AQI
48AQI
55AQI
31AQI
48AQI
46AQI
58AQI
61AQI
70AQI
51AQI
44AQI
49AQI
68AQI
59AQI
39AQI
34AQI
48AQI
37AQI
49AQI
52AQI
59AQI
56AQI
55AQI
45AQI
44AQI
44AQI
47AQI
55AQI
60AQI
61AQI
63AQI
61AQI
98AQI
92AQI
107AQI
91AQI
71AQI
68AQI
74AQI
85AQI
74AQI
59AQI
52AQI
49AQI
42AQI
50AQI
60AQI
40AQI
43AQI
36AQI
36AQI
35AQI
44AQI
40AQI
40AQI
27AQI
25AQI
24AQI
28AQI
38AQI
44AQI
44AQI
43AQI
41AQI
42AQI
57AQI
47AQI
47AQI
47AQI
53AQI
49AQI
49AQI
39AQI
33AQI
39AQI
46AQI
42AQI
41AQI
36AQI
43AQI
40AQI
44AQI
40AQI
39AQI
45AQI
49AQI
51AQI
52AQI
53AQI
51AQI
52AQI
53AQI
52AQI
39AQI
32AQI
42AQI
26AQI
22AQI
25AQI
32AQI
35AQI
32AQI
34AQI
30AQI
29AQI
32AQI
31AQI
39AQI
42AQI
45AQI
29AQI
28AQI
40AQI
24AQI
27AQI
31AQI
29AQI
28AQI
34AQI
27AQI
31AQI
33AQI
36AQI
43AQI
55AQI
52AQI
54AQI
52AQI
59AQI
64AQI
61AQI
44AQI
55AQI
60AQI
61AQI
63AQI
53AQI
43AQI
43AQI
53AQI
52AQI
46AQI
51AQI
54AQI
46AQI
32AQI
55AQI
No. of days
202547AQI
Highest AQI recorded in
October55AQI
Lowest AQI recorded in
September32AQI
202441AQI
Highest AQI recorded in
April52AQI
Lowest AQI recorded in
October33AQI
202344AQI
Highest AQI recorded in
March51AQI
Lowest AQI recorded in
August33AQI
202245AQI
Highest AQI recorded in
March54AQI
Lowest AQI recorded in
October37AQI
202147AQI
Highest AQI recorded in
May53AQI
Lowest AQI recorded in
October41AQI
202048AQI
Highest AQI recorded in
August67AQI
Lowest AQI recorded in
September38AQI
Most & Least Polluted Years Over the Last 6 Years
Kojimaogawa's annual 2025 AQI (47) shows an average percentage change of 4.7% (worsened AQI) compared to previous years: 2020 (48), 2021 (47), 2022 (45), 2023 (44), 2024 (41).