Horaicho, Toyota, Aichi, 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
Horaicho, Toyota, Aichi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 60 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Horaicho, Toyota, Aichi, Japan
5 AM4th Oct 2025
5 PM
4 AM5th Oct 2025
AQI
AQI
63AQI
40AQI
In the last 24 hours,
Horaicho's AQI reached its highest point of 63 at 9 AM during the Night, while the lowest point, 40, was recorded at 6 PM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Horaicho, Toyota, Aichi, Japan
24°C23/27°C
26°C21/31°C
27°C23/32°C
29°C25/34°C
29°C26/34°C
27°C24/32°C
26°C23/29°C
25°C23/29°C
26°C23/28°C
27°C24/30°C
28°C25/33°C
28°C24/33°C
28°C25/33°C
27°C24/32°C
24°C22/27°C
23°C22/24°C
25°C21/30°C
22°C18/26°C
22°C19/26°C
22°C19/27°C
24°C22/28°C
26°C21/32°C
24°C20/29°C
24°C21/28°C
23°C21/28°C
22°C19/26°C
21°C19/24°C
21°C17/26°C
22°C20/26°C
--°C/°C
--°C/°C
40AQI
35AQI
37AQI
37AQI
2025 Days Vs Air Quality
Horaicho, Toyota, Aichi, Japan
91%
251
9%
26
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 277 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Horaicho, Toyota, Aichi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
31AQI
30AQI
27AQI
26AQI
23AQI
27AQI
26AQI
26AQI
21AQI
24AQI
23AQI
25AQI
27AQI
28AQI
23AQI
27AQI
25AQI
25AQI
25AQI
32AQI
30AQI
35AQI
34AQI
33AQI
29AQI
23AQI
27AQI
28AQI
28AQI
30AQI
33AQI
24AQI
26AQI
28AQI
29AQI
29AQI
29AQI
28AQI
28AQI
28AQI
30AQI
25AQI
32AQI
27AQI
30AQI
29AQI
32AQI
29AQI
29AQI
28AQI
29AQI
28AQI
30AQI
31AQI
31AQI
34AQI
38AQI
34AQI
37AQI
36AQI
31AQI
23AQI
22AQI
30AQI
30AQI
29AQI
34AQI
32AQI
29AQI
24AQI
33AQI
20AQI
20AQI
16AQI
15AQI
14AQI
14AQI
17AQI
27AQI
25AQI
31AQI
30AQI
48AQI
71AQI
56AQI
39AQI
32AQI
24AQI
22AQI
20AQI
20AQI
17AQI
17AQI
18AQI
11AQI
13AQI
14AQI
14AQI
16AQI
18AQI
19AQI
15AQI
18AQI
16AQI
16AQI
17AQI
21AQI
21AQI
18AQI
15AQI
14AQI
11AQI
11AQI
16AQI
16AQI
16AQI
14AQI
15AQI
16AQI
16AQI
15AQI
16AQI
16AQI
18AQI
14AQI
14AQI
15AQI
15AQI
13AQI
14AQI
16AQI
18AQI
18AQI
22AQI
18AQI
17AQI
18AQI
20AQI
26AQI
25AQI
21AQI
19AQI
17AQI
14AQI
15AQI
16AQI
14AQI
15AQI
14AQI
14AQI
13AQI
16AQI
14AQI
17AQI
17AQI
18AQI
19AQI
24AQI
17AQI
16AQI
15AQI
18AQI
18AQI
16AQI
16AQI
16AQI
18AQI
21AQI
24AQI
24AQI
21AQI
17AQI
16AQI
16AQI
16AQI
16AQI
18AQI
18AQI
19AQI
32AQI
37AQI
49AQI
62AQI
63AQI
70AQI
60AQI
69AQI
72AQI
79AQI
63AQI
56AQI
55AQI
53AQI
47AQI
49AQI
48AQI
43AQI
40AQI
35AQI
31AQI
31AQI
32AQI
34AQI
32AQI
26AQI
24AQI
24AQI
30AQI
38AQI
38AQI
38AQI
42AQI
45AQI
47AQI
62AQI
54AQI
53AQI
47AQI
42AQI
49AQI
42AQI
35AQI
35AQI
36AQI
40AQI
40AQI
43AQI
44AQI
43AQI
49AQI
45AQI
47AQI
46AQI
49AQI
57AQI
57AQI
56AQI
52AQI
51AQI
56AQI
56AQI
53AQI
45AQI
37AQI
37AQI
28AQI
24AQI
26AQI
32AQI
38AQI
40AQI
36AQI
29AQI
31AQI
27AQI
38AQI
35AQI
43AQI
49AQI
43AQI
34AQI
37AQI
30AQI
31AQI
35AQI
33AQI
37AQI
28AQI
35AQI
35AQI
39AQI
39AQI
48AQI
50AQI
54AQI
60AQI
27AQI
30AQI
29AQI
16AQI
17AQI
18AQI
46AQI
48AQI
35AQI
53AQI
No. of days
202530AQI
Highest AQI recorded in
October53AQI
Lowest AQI recorded in
April16AQI
202434AQI
Highest AQI recorded in
September46AQI
Lowest AQI recorded in
March7AQI
202318AQI
Highest AQI recorded in
December18AQI
Lowest AQI recorded in
November14AQI
202026AQI
Highest AQI recorded in
September26AQI
Lowest AQI recorded in
September26AQI
Most & Least Polluted Years Over the Last 4 Years
Horaicho's annual 2025 AQI (30) shows an average percentage change of 24.2% (worsened AQI) compared to previous years: 2020 (26), 2023 (18), 2024 (34).