Obu, Aichi, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Obu, Aichi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (29th July):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 26 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 27th Jul - 28th Jul 2026
Obu, Aichi, Japan
4 AM27th Jul 2026
7 PM
3 AM28th Jul 2026
45AQI
23AQI
43AQI
26AQI
In the last 24 hours,
Obu's AQI reached its highest point of 45 at 4 AM during the Day, while the lowest point, 23, was recorded at 2 PM during the Day between 27th Jul and 28th Jul 2026.
Day & Night AQI Trend : Jun - Jul 2026
Obu, Aichi, Japan
24°C21/27°C
24°C22/26°C
24°C22/27°C
23°C21/25°C
24°C21/28°C
23°C21/24°C
22°C21/25°C
22°C21/22°C
23°C21/26°C
25°C23/27°C
25°C22/29°C
26°C23/30°C
26°C23/29°C
27°C25/30°C
28°C26/32°C
30°C25/35°C
30°C27/34°C
31°C27/35°C
29°C27/32°C
28°C26/30°C
29°C27/32°C
30°C27/33°C
31°C28/35°C
32°C28/37°C
33°C28/38°C
31°C28/35°C
32°C28/37°C
30°C27/34°C
30°C27/35°C
28°C26/31°C
44AQI
35AQI
35AQI
31AQI
2026 Days Vs Air Quality
Obu, Aichi, Japan
81%
170
19%
40
Total number of days with different AQI categories in last 210 days in 2026 (155 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2026, 81% of 210 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
Obu, Aichi, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
14AQI (US)
12AQI (US)
12AQI (US)
22AQI (US)
46AQI (US)
16AQI (US)
36AQI (US)
34AQI (US)
16AQI (US)
38AQI (US)
36AQI (US)
17AQI (US)
44AQI (US)
24AQI (US)
48AQI (US)
60AQI (US)
63AQI (US)
60AQI (US)
72AQI (US)
28AQI (US)
12AQI (US)
16AQI (US)
36AQI (US)
46AQI (US)
44AQI (US)
18AQI (US)
42AQI (US)
34AQI (US)
31AQI (US)
32AQI (US)
33AQI (US)
34AQI (US)
44AQI (US)
29AQI (US)
38AQI (US)
60AQI (US)
58AQI (US)
16AQI (US)
28AQI (US)
40AQI (US)
49AQI (US)
40AQI (US)
56AQI (US)
62AQI (US)
70AQI (US)
68AQI (US)
54AQI (US)
22AQI (US)
28AQI (US)
31AQI (US)
40AQI (US)
58AQI (US)
46AQI (US)
49AQI (US)
56AQI (US)
35AQI (US)
24AQI (US)
46AQI (US)
28AQI (US)
24AQI (US)
58AQI (US)
37AQI (US)
10AQI (US)
46AQI (US)
48AQI (US)
34AQI (US)
46AQI (US)
30AQI (US)
53AQI (US)
35AQI (US)
32AQI (US)
38AQI (US)
44AQI (US)
58AQI (US)
52AQI (US)
50AQI (US)
62AQI (US)
34AQI (US)
48AQI (US)
58AQI (US)
61AQI (US)
55AQI (US)
47AQI (US)
52AQI (US)
15AQI (US)
30AQI (US)
62AQI (US)
56AQI (US)
49AQI (US)
20AQI (US)
21AQI (US)
41AQI (US)
54AQI (US)
34AQI (US)
21AQI (US)
40AQI (US)
40AQI (US)
30AQI (US)
30AQI (US)
46AQI (US)
44AQI (US)
39AQI (US)
47AQI (US)
54AQI (US)
31AQI (US)
27AQI (US)
37AQI (US)
30AQI (US)
31AQI (US)
35AQI (US)
48AQI (US)
45AQI (US)
40AQI (US)
22AQI (US)
42AQI (US)
49AQI (US)
49AQI (US)
47AQI (US)
50AQI (US)
28AQI (US)
25AQI (US)
31AQI (US)
50AQI (US)
27AQI (US)
20AQI (US)
25AQI (US)
28AQI (US)
27AQI (US)
24AQI (US)
29AQI (US)
29AQI (US)
32AQI (US)
38AQI (US)
33AQI (US)
42AQI (US)
84AQI (US)
68AQI (US)
53AQI (US)
48AQI (US)
62AQI (US)
59AQI (US)
63AQI (US)
56AQI (US)
60AQI (US)
48AQI (US)
40AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
38AQI (US)
32AQI (US)
22AQI (US)
25AQI (US)
24AQI (US)
22AQI (US)
25AQI (US)
21AQI (US)
20AQI (US)
22AQI (US)
22AQI (US)
25AQI (US)
26AQI (US)
42AQI (US)
32AQI (US)
20AQI (US)
25AQI (US)
24AQI (US)
25AQI (US)
32AQI (US)
16AQI (US)
18AQI (US)
18AQI (US)
21AQI (US)
21AQI (US)
27AQI (US)
29AQI (US)
26AQI (US)
32AQI (US)
50AQI (US)
62AQI (US)
48AQI (US)
30AQI (US)
26AQI (US)
22AQI (US)
20AQI (US)
20AQI (US)
26AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
20AQI (US)
28AQI (US)
52AQI (US)
31AQI (US)
39AQI (US)
53AQI (US)
53AQI (US)
45AQI (US)
23AQI (US)
33AQI (US)
60AQI (US)
72AQI (US)
48AQI (US)
45AQI (US)
43AQI (US)
40AQI (US)
32AQI (US)
32AQI (US)
26AQI (US)
34AQI (US)
43AQI (US)
43AQI (US)
38AQI (US)
40AQI (US)
27AQI (US)
36AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202535AQI (US)
Highest AQI (US) recorded in
July48AQI (US)
Lowest AQI (US) recorded in
June22AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
April43AQI (US)
Lowest AQI (US) recorded in
December25AQI (US)
202333AQI (US)
Highest AQI (US) recorded in
April42AQI (US)
Lowest AQI (US) recorded in
August22AQI (US)
202231AQI (US)
Highest AQI (US) recorded in
March40AQI (US)
Lowest AQI (US) recorded in
August17AQI (US)
202125AQI (US)
Highest AQI (US) recorded in
June39AQI (US)
Lowest AQI (US) recorded in
January16AQI (US)
202016AQI (US)
Highest AQI (US) recorded in
August22AQI (US)
Lowest AQI (US) recorded in
December14AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Obu's annual 2026 AQI (US) (37) shows an average percentage change of 38.6% (worsened AQI (US)) compared to previous years: 2020 (16), 2021 (25), 2022 (31), 2023 (33), 2024 (32), 2025 (35).