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
Saijo, Ehime, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (1st October):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 28 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Day & Night AQI Trend: 30th Sep - 1st Oct 2026
Saijo, Ehime, Japan
5 AM30th Sep 2026
6 PM
4 AM1st Oct 2026
27AQI
21AQI
32AQI
25AQI
In the last 24 hours,
Saijo's AQI reached its highest point of 32 at 8 PM during the Night, while the lowest point, 21, was recorded at 7 AM during the Day between 30th Sep and 1st Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
Saijo, Ehime, Japan
22°C20/27°C
20°C17/22°C
18°C15/21°C
18°C17/20°C
18°C17/20°C
19°C17/21°C
21°C20/22°C
18°C15/21°C
16°C14/18°C
20°C18/22°C
20°C19/22°C
21°C19/22°C
20°C19/22°C
19°C18/21°C
18°C16/19°C
18°C16/21°C
19°C17/21°C
20°C18/22°C
19°C17/22°C
16°C15/17°C
17°C14/22°C
19°C15/23°C
19°C17/24°C
18°C16/23°C
17°C16/18°C
17°C16/19°C
19°C16/21°C
15°C14/17°C
18°C14/23°C
18°C15/21°C
30AQI
28AQI
30AQI
28AQI
2026 Days Vs Air Quality
Saijo, Ehime, Japan
79%
217
21%
57
Total number of days with different AQI categories in last 274 days in 2026 (91 days remaining)
Under WHO’s Safe Air Quality Limits: 79%
Health Risk Level:
Low
In 2026, 79% of 274 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
Saijo, Ehime, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
32AQI (US)
27AQI (US)
32AQI (US)
44AQI (US)
56AQI (US)
33AQI (US)
36AQI (US)
44AQI (US)
26AQI (US)
34AQI (US)
33AQI (US)
28AQI (US)
34AQI (US)
30AQI (US)
58AQI (US)
64AQI (US)
66AQI (US)
66AQI (US)
73AQI (US)
32AQI (US)
20AQI (US)
28AQI (US)
35AQI (US)
47AQI (US)
40AQI (US)
20AQI (US)
44AQI (US)
36AQI (US)
38AQI (US)
28AQI (US)
22AQI (US)
44AQI (US)
48AQI (US)
32AQI (US)
34AQI (US)
41AQI (US)
45AQI (US)
28AQI (US)
23AQI (US)
38AQI (US)
45AQI (US)
52AQI (US)
43AQI (US)
40AQI (US)
62AQI (US)
76AQI (US)
54AQI (US)
28AQI (US)
24AQI (US)
50AQI (US)
48AQI (US)
68AQI (US)
74AQI (US)
68AQI (US)
54AQI (US)
38AQI (US)
25AQI (US)
52AQI (US)
20AQI (US)
34AQI (US)
60AQI (US)
41AQI (US)
28AQI (US)
49AQI (US)
49AQI (US)
40AQI (US)
28AQI (US)
42AQI (US)
56AQI (US)
54AQI (US)
58AQI (US)
37AQI (US)
42AQI (US)
60AQI (US)
50AQI (US)
45AQI (US)
60AQI (US)
50AQI (US)
60AQI (US)
46AQI (US)
58AQI (US)
58AQI (US)
55AQI (US)
56AQI (US)
16AQI (US)
38AQI (US)
69AQI (US)
82AQI (US)
88AQI (US)
28AQI (US)
16AQI (US)
48AQI (US)
54AQI (US)
42AQI (US)
24AQI (US)
54AQI (US)
40AQI (US)
39AQI (US)
48AQI (US)
36AQI (US)
35AQI (US)
36AQI (US)
46AQI (US)
70AQI (US)
60AQI (US)
26AQI (US)
42AQI (US)
50AQI (US)
50AQI (US)
45AQI (US)
38AQI (US)
43AQI (US)
32AQI (US)
20AQI (US)
46AQI (US)
44AQI (US)
42AQI (US)
52AQI (US)
45AQI (US)
29AQI (US)
40AQI (US)
52AQI (US)
43AQI (US)
28AQI (US)
26AQI (US)
29AQI (US)
38AQI (US)
30AQI (US)
28AQI (US)
33AQI (US)
34AQI (US)
32AQI (US)
38AQI (US)
30AQI (US)
34AQI (US)
78AQI (US)
64AQI (US)
53AQI (US)
46AQI (US)
60AQI (US)
65AQI (US)
69AQI (US)
60AQI (US)
62AQI (US)
54AQI (US)
42AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
28AQI (US)
33AQI (US)
24AQI (US)
18AQI (US)
26AQI (US)
23AQI (US)
26AQI (US)
24AQI (US)
20AQI (US)
23AQI (US)
23AQI (US)
26AQI (US)
26AQI (US)
27AQI (US)
28AQI (US)
26AQI (US)
28AQI (US)
24AQI (US)
27AQI (US)
38AQI (US)
56AQI (US)
20AQI (US)
14AQI (US)
22AQI (US)
21AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
34AQI (US)
28AQI (US)
46AQI (US)
60AQI (US)
14AQI (US)
26AQI (US)
25AQI (US)
22AQI (US)
22AQI (US)
30AQI (US)
54AQI (US)
36AQI (US)
32AQI (US)
30AQI (US)
28AQI (US)
29AQI (US)
28AQI (US)
26AQI (US)
28AQI (US)
37AQI (US)
56AQI (US)
60AQI (US)
60AQI (US)
64AQI (US)
66AQI (US)
60AQI (US)
58AQI (US)
54AQI (US)
48AQI (US)
42AQI (US)
38AQI (US)
28AQI (US)
28AQI (US)
30AQI (US)
42AQI (US)
42AQI (US)
46AQI (US)
48AQI (US)
47AQI (US)
27AQI (US)
24AQI (US)
24AQI (US)
22AQI (US)
32AQI (US)
25AQI (US)
24AQI (US)
24AQI (US)
40AQI (US)
36AQI (US)
30AQI (US)
24AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
30AQI (US)
29AQI (US)
33AQI (US)
33AQI (US)
32AQI (US)
28AQI (US)
22AQI (US)
22AQI (US)
22AQI (US)
31AQI (US)
41AQI (US)
34AQI (US)
24AQI (US)
25AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
22AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
28AQI (US)
32AQI (US)
49AQI (US)
36AQI (US)
20AQI (US)
22AQI (US)
24AQI (US)
30AQI (US)
28AQI (US)
30AQI (US)
25AQI (US)
32AQI (US)
30AQI (US)
52AQI (US)
52AQI (US)
50AQI (US)
16AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
28AQI (US)
39AQI (US)
45AQI (US)
50AQI (US)
42AQI (US)
42AQI (US)
27AQI (US)
39AQI (US)
31AQI (US)
29AQI (US)
28AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
March50AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202550AQI (US)
Highest AQI (US) recorded in
October59AQI (US)
Lowest AQI (US) recorded in
September32AQI (US)
202447AQI (US)
Highest AQI (US) recorded in
April66AQI (US)
Lowest AQI (US) recorded in
December34AQI (US)
202347AQI (US)
Highest AQI (US) recorded in
April59AQI (US)
Lowest AQI (US) recorded in
August34AQI (US)
202246AQI (US)
Highest AQI (US) recorded in
May58AQI (US)
Lowest AQI (US) recorded in
December37AQI (US)
202144AQI (US)
Highest AQI (US) recorded in
June56AQI (US)
Lowest AQI (US) recorded in
December38AQI (US)
202046AQI (US)
Highest AQI (US) recorded in
August63AQI (US)
Lowest AQI (US) recorded in
September36AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Saijo's annual 2026 AQI (US) (38) shows an average percentage change of -18.4% (improved AQI (US)) compared to previous years: 2020 (46), 2021 (44), 2022 (46), 2023 (47), 2024 (47), 2025 (50).