Uwajima, Ehime, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Uwajima, Ehime, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (29th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 24 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Day & Night AQI Trend: 28th Sep - 29th Sep 2026
Uwajima, Ehime, Japan
5 AM28th Sep 2026
6 PM
4 AM29th Sep 2026
54AQI
8AQI
42AQI
10AQI
In the last 24 hours,
Uwajima's AQI reached its highest point of 54 at 5 PM during the Day, while the lowest point, 8, was recorded at 9 AM during the Day between 28th Sep and 29th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Uwajima, Ehime, Japan
26°C24/28°C
26°C24/30°C
26°C24/28°C
24°C23/26°C
22°C20/24°C
22°C20/24°C
23°C22/25°C
25°C23/27°C
25°C24/26°C
24°C23/27°C
22°C22/22°C
24°C22/26°C
24°C23/26°C
25°C24/27°C
25°C24/27°C
24°C22/25°C
23°C22/24°C
23°C22/25°C
23°C22/25°C
24°C22/26°C
24°C22/28°C
23°C21/25°C
23°C18/27°C
22°C20/24°C
23°C21/25°C
22°C20/25°C
22°C21/26°C
21°C20/23°C
23°C21/25°C
21°C20/22°C
30AQI
26AQI
27AQI
25AQI
2026 Days Vs Air Quality
Uwajima, Ehime, Japan
89%
242
11%
30
Total number of days with different AQI categories in last 272 days in 2026 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2026, 89% of 272 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
Uwajima, Ehime, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI (US)
19AQI (US)
20AQI (US)
32AQI (US)
37AQI (US)
23AQI (US)
24AQI (US)
31AQI (US)
15AQI (US)
21AQI (US)
32AQI (US)
22AQI (US)
33AQI (US)
27AQI (US)
37AQI (US)
51AQI (US)
42AQI (US)
35AQI (US)
53AQI (US)
40AQI (US)
13AQI (US)
20AQI (US)
34AQI (US)
42AQI (US)
39AQI (US)
18AQI (US)
38AQI (US)
26AQI (US)
32AQI (US)
27AQI (US)
15AQI (US)
40AQI (US)
45AQI (US)
32AQI (US)
31AQI (US)
38AQI (US)
45AQI (US)
27AQI (US)
18AQI (US)
36AQI (US)
39AQI (US)
36AQI (US)
37AQI (US)
28AQI (US)
51AQI (US)
46AQI (US)
55AQI (US)
19AQI (US)
20AQI (US)
48AQI (US)
37AQI (US)
66AQI (US)
33AQI (US)
45AQI (US)
28AQI (US)
11AQI (US)
16AQI (US)
48AQI (US)
35AQI (US)
33AQI (US)
54AQI (US)
38AQI (US)
25AQI (US)
44AQI (US)
47AQI (US)
50AQI (US)
27AQI (US)
36AQI (US)
36AQI (US)
46AQI (US)
52AQI (US)
37AQI (US)
42AQI (US)
58AQI (US)
48AQI (US)
41AQI (US)
55AQI (US)
33AQI (US)
50AQI (US)
39AQI (US)
46AQI (US)
26AQI (US)
45AQI (US)
42AQI (US)
15AQI (US)
31AQI (US)
67AQI (US)
70AQI (US)
61AQI (US)
15AQI (US)
12AQI (US)
49AQI (US)
47AQI (US)
42AQI (US)
39AQI (US)
45AQI (US)
28AQI (US)
24AQI (US)
29AQI (US)
45AQI (US)
33AQI (US)
32AQI (US)
31AQI (US)
40AQI (US)
50AQI (US)
18AQI (US)
30AQI (US)
28AQI (US)
30AQI (US)
33AQI (US)
37AQI (US)
43AQI (US)
28AQI (US)
18AQI (US)
43AQI (US)
47AQI (US)
52AQI (US)
51AQI (US)
39AQI (US)
24AQI (US)
40AQI (US)
52AQI (US)
41AQI (US)
28AQI (US)
23AQI (US)
25AQI (US)
28AQI (US)
27AQI (US)
28AQI (US)
26AQI (US)
28AQI (US)
25AQI (US)
35AQI (US)
28AQI (US)
31AQI (US)
77AQI (US)
64AQI (US)
53AQI (US)
47AQI (US)
61AQI (US)
64AQI (US)
68AQI (US)
60AQI (US)
63AQI (US)
54AQI (US)
41AQI (US)
24AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
20AQI (US)
21AQI (US)
19AQI (US)
20AQI (US)
23AQI (US)
22AQI (US)
30AQI (US)
37AQI (US)
26AQI (US)
23AQI (US)
22AQI (US)
24AQI (US)
23AQI (US)
25AQI (US)
30AQI (US)
32AQI (US)
18AQI (US)
18AQI (US)
19AQI (US)
19AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
28AQI (US)
25AQI (US)
49AQI (US)
38AQI (US)
16AQI (US)
23AQI (US)
24AQI (US)
18AQI (US)
19AQI (US)
24AQI (US)
22AQI (US)
22AQI (US)
25AQI (US)
21AQI (US)
26AQI (US)
29AQI (US)
32AQI (US)
32AQI (US)
33AQI (US)
33AQI (US)
53AQI (US)
53AQI (US)
52AQI (US)
38AQI (US)
54AQI (US)
51AQI (US)
41AQI (US)
48AQI (US)
39AQI (US)
40AQI (US)
43AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
30AQI (US)
36AQI (US)
48AQI (US)
42AQI (US)
23AQI (US)
23AQI (US)
25AQI (US)
25AQI (US)
26AQI (US)
28AQI (US)
34AQI (US)
23AQI (US)
24AQI (US)
31AQI (US)
26AQI (US)
27AQI (US)
25AQI (US)
26AQI (US)
25AQI (US)
28AQI (US)
26AQI (US)
27AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
34AQI (US)
44AQI (US)
12AQI (US)
21AQI (US)
26AQI (US)
28AQI (US)
30AQI (US)
23AQI (US)
24AQI (US)
27AQI (US)
27AQI (US)
23AQI (US)
26AQI (US)
27AQI (US)
30AQI (US)
27AQI (US)
28AQI (US)
25AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
24AQI (US)
24AQI (US)
32AQI (US)
32AQI (US)
33AQI (US)
37AQI (US)
58AQI (US)
10AQI (US)
21AQI (US)
24AQI (US)
30AQI (US)
36AQI (US)
42AQI (US)
36AQI (US)
40AQI (US)
25AQI (US)
33AQI (US)
29AQI (US)
27AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
March42AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202541AQI (US)
Highest AQI (US) recorded in
July48AQI (US)
Lowest AQI (US) recorded in
September29AQI (US)
202430AQI (US)
Highest AQI (US) recorded in
August37AQI (US)
Lowest AQI (US) recorded in
October23AQI (US)
202337AQI (US)
Highest AQI (US) recorded in
April51AQI (US)
Lowest AQI (US) recorded in
December26AQI (US)
202238AQI (US)
Highest AQI (US) recorded in
May51AQI (US)
Lowest AQI (US) recorded in
August16AQI (US)
202135AQI (US)
Highest AQI (US) recorded in
May42AQI (US)
Lowest AQI (US) recorded in
August30AQI (US)
202035AQI (US)
Highest AQI (US) recorded in
August50AQI (US)
Lowest AQI (US) recorded in
October28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Uwajima's annual 2026 AQI (US) (33) shows an average percentage change of -7.4% (improved AQI (US)) compared to previous years: 2020 (35), 2021 (35), 2022 (38), 2023 (37), 2024 (30), 2025 (41).