Nyugawa, Saijo, Ehime, 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
Nyugawa, Saijo, Ehime, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (13th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 65 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 13th Oct - 14th Oct 2025
Nyugawa, Saijo, Ehime, Japan
5 AM13th Oct 2025
5 PM
4 AM14th Oct 2025
AQI
AQI
69AQI
54AQI
In the last 24 hours,
Nyugawa's AQI reached its highest point of 69 at 8 AM during the Night, while the lowest point, 54, was recorded at 5 PM during the Night between 13th Oct and 14th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Nyugawa, Saijo, Ehime, Japan
25°C21/28°C
25°C22/28°C
24°C21/27°C
24°C20/28°C
23°C20/26°C
21°C18/23°C
22°C19/24°C
21°C19/23°C
19°C15/23°C
20°C18/21°C
22°C21/24°C
23°C22/24°C
23°C21/26°C
21°C19/23°C
20°C17/22°C
20°C18/23°C
19°C15/23°C
20°C17/24°C
19°C14/22°C
17°C15/18°C
20°C17/23°C
22°C20/26°C
20°C16/24°C
22°C19/25°C
22°C21/25°C
19°C17/22°C
20°C16/23°C
22°C19/24°C
23°C21/25°C
--°C/°C
--°C/°C
47AQI
45AQI
51AQI
47AQI
2025 Days Vs Air Quality
Nyugawa, Saijo, Ehime, Japan
64%
184
35%
99
1%
3
Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)
Under WHO’s Safe Air Quality Limits: 64%
Health Risk Level:
Moderate
In 2025, 64% of 286 days were within WHO’s safe air quality limits, and 36% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Nyugawa, Saijo, Ehime, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
38AQI
34AQI
34AQI
34AQI
50AQI
33AQI
36AQI
30AQI
28AQI
31AQI
30AQI
45AQI
50AQI
46AQI
39AQI
37AQI
34AQI
53AQI
41AQI
56AQI
61AQI
74AQI
92AQI
49AQI
48AQI
44AQI
38AQI
34AQI
44AQI
58AQI
71AQI
48AQI
55AQI
40AQI
41AQI
33AQI
39AQI
32AQI
32AQI
32AQI
38AQI
47AQI
47AQI
52AQI
39AQI
52AQI
47AQI
40AQI
41AQI
34AQI
37AQI
43AQI
37AQI
40AQI
39AQI
44AQI
79AQI
95AQI
106AQI
126AQI
60AQI
63AQI
42AQI
42AQI
39AQI
43AQI
45AQI
47AQI
55AQI
56AQI
62AQI
57AQI
43AQI
29AQI
46AQI
31AQI
44AQI
48AQI
61AQI
64AQI
72AQI
65AQI
80AQI
77AQI
96AQI
62AQI
55AQI
43AQI
43AQI
50AQI
42AQI
31AQI
36AQI
46AQI
48AQI
48AQI
44AQI
64AQI
64AQI
60AQI
65AQI
49AQI
52AQI
32AQI
50AQI
52AQI
63AQI
63AQI
51AQI
48AQI
55AQI
47AQI
42AQI
60AQI
61AQI
58AQI
49AQI
46AQI
56AQI
55AQI
40AQI
50AQI
40AQI
46AQI
35AQI
34AQI
39AQI
39AQI
40AQI
40AQI
51AQI
55AQI
62AQI
59AQI
64AQI
52AQI
53AQI
61AQI
66AQI
71AQI
48AQI
56AQI
45AQI
28AQI
40AQI
42AQI
46AQI
50AQI
46AQI
40AQI
45AQI
52AQI
35AQI
47AQI
48AQI
56AQI
62AQI
70AQI
64AQI
39AQI
48AQI
57AQI
57AQI
50AQI
36AQI
40AQI
41AQI
50AQI
52AQI
57AQI
64AQI
74AQI
59AQI
52AQI
55AQI
47AQI
53AQI
59AQI
58AQI
59AQI
60AQI
86AQI
96AQI
108AQI
88AQI
69AQI
66AQI
70AQI
77AQI
80AQI
67AQI
62AQI
55AQI
45AQI
52AQI
61AQI
51AQI
40AQI
41AQI
40AQI
39AQI
38AQI
43AQI
48AQI
35AQI
29AQI
29AQI
36AQI
38AQI
39AQI
40AQI
42AQI
41AQI
45AQI
54AQI
47AQI
42AQI
47AQI
50AQI
43AQI
43AQI
32AQI
32AQI
39AQI
45AQI
43AQI
41AQI
38AQI
43AQI
46AQI
44AQI
40AQI
40AQI
44AQI
43AQI
43AQI
46AQI
48AQI
45AQI
49AQI
47AQI
44AQI
37AQI
33AQI
39AQI
29AQI
23AQI
26AQI
30AQI
31AQI
29AQI
32AQI
30AQI
28AQI
34AQI
29AQI
35AQI
41AQI
39AQI
28AQI
34AQI
43AQI
28AQI
28AQI
29AQI
34AQI
31AQI
36AQI
40AQI
42AQI
28AQI
32AQI
44AQI
60AQI
63AQI
71AQI
73AQI
69AQI
71AQI
74AQI
57AQI
66AQI
75AQI
81AQI
65AQI
44AQI
46AQI
58AQI
51AQI
48AQI
53AQI
56AQI
43AQI
33AQI
67AQI
No. of days
202549AQI
Highest AQI recorded in
October67AQI
Lowest AQI recorded in
September33AQI
202448AQI
Highest AQI recorded in
April66AQI
Lowest AQI recorded in
December34AQI
202347AQI
Highest AQI recorded in
April55AQI
Lowest AQI recorded in
August41AQI
202246AQI
Highest AQI recorded in
May55AQI
Lowest AQI recorded in
December35AQI
202142AQI
Highest AQI recorded in
June53AQI
Lowest AQI recorded in
January36AQI
202044AQI
Highest AQI recorded in
August62AQI
Lowest AQI recorded in
December35AQI
Most & Least Polluted Years Over the Last 6 Years
Nyugawa's annual 2025 AQI (49) shows an average percentage change of 7.4% (worsened AQI) compared to previous years: 2020 (44), 2021 (42), 2022 (46), 2023 (47), 2024 (48).