Honjo, Sano, Tochigi, 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
Honjo, Sano, Tochigi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 52 of Moderate air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
Honjo, Sano, Tochigi, Japan
5 AM2nd Oct 2025
5 PM
4 AM3rd Oct 2025
AQI
AQI
59AQI
36AQI
In the last 24 hours,
Honjo's AQI reached its highest point of 59 at 6 AM during the Night, while the lowest point, 36, was recorded at 8 AM during the Night between 2nd Oct and 3rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Honjo, Sano, Tochigi, Japan
29°C26/36°C
26°C25/29°C
24°C23/24°C
27°C21/33°C
29°C25/34°C
29°C25/35°C
29°C26/34°C
26°C24/29°C
25°C23/28°C
23°C21/26°C
24°C22/27°C
27°C23/33°C
28°C25/32°C
29°C24/34°C
30°C26/35°C
28°C22/35°C
21°C20/23°C
22°C20/24°C
25°C21/31°C
22°C19/26°C
22°C19/26°C
22°C19/26°C
24°C19/29°C
26°C23/32°C
25°C22/30°C
24°C21/26°C
26°C22/33°C
23°C21/26°C
19°C18/20°C
--°C/°C
--°C/°C
35AQI
30AQI
35AQI
33AQI
2025 Days Vs Air Quality
Honjo, Sano, Tochigi, Japan
88%
243
12%
32
Total number of days with different AQI categories in last 275 days in 2025 (90 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 275 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
Honjo, Sano, Tochigi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
28AQI
28AQI
26AQI
33AQI
50AQI
30AQI
35AQI
27AQI
27AQI
26AQI
30AQI
28AQI
29AQI
33AQI
30AQI
30AQI
32AQI
41AQI
43AQI
42AQI
40AQI
44AQI
48AQI
38AQI
34AQI
31AQI
36AQI
31AQI
31AQI
29AQI
32AQI
40AQI
38AQI
34AQI
33AQI
29AQI
29AQI
30AQI
30AQI
29AQI
30AQI
33AQI
33AQI
31AQI
31AQI
39AQI
35AQI
32AQI
31AQI
31AQI
31AQI
31AQI
32AQI
33AQI
34AQI
38AQI
40AQI
47AQI
52AQI
54AQI
41AQI
39AQI
31AQI
34AQI
33AQI
38AQI
37AQI
38AQI
44AQI
48AQI
45AQI
35AQI
41AQI
25AQI
23AQI
23AQI
19AQI
24AQI
36AQI
45AQI
51AQI
54AQI
67AQI
65AQI
69AQI
59AQI
40AQI
35AQI
32AQI
31AQI
23AQI
22AQI
23AQI
27AQI
22AQI
27AQI
35AQI
27AQI
39AQI
40AQI
39AQI
27AQI
26AQI
23AQI
24AQI
39AQI
49AQI
64AQI
60AQI
42AQI
50AQI
32AQI
40AQI
38AQI
45AQI
42AQI
51AQI
35AQI
44AQI
41AQI
30AQI
30AQI
33AQI
30AQI
26AQI
23AQI
30AQI
30AQI
24AQI
21AQI
20AQI
31AQI
39AQI
40AQI
47AQI
28AQI
39AQI
42AQI
53AQI
62AQI
53AQI
50AQI
45AQI
31AQI
32AQI
30AQI
27AQI
34AQI
28AQI
22AQI
24AQI
34AQI
34AQI
29AQI
36AQI
46AQI
51AQI
64AQI
56AQI
40AQI
34AQI
44AQI
43AQI
36AQI
32AQI
40AQI
48AQI
41AQI
46AQI
45AQI
43AQI
47AQI
40AQI
37AQI
32AQI
33AQI
35AQI
35AQI
42AQI
48AQI
48AQI
48AQI
50AQI
51AQI
54AQI
56AQI
77AQI
78AQI
81AQI
62AQI
47AQI
51AQI
51AQI
40AQI
40AQI
43AQI
38AQI
39AQI
38AQI
38AQI
42AQI
44AQI
47AQI
48AQI
50AQI
52AQI
47AQI
47AQI
47AQI
37AQI
38AQI
35AQI
39AQI
43AQI
56AQI
49AQI
47AQI
38AQI
37AQI
37AQI
37AQI
36AQI
32AQI
31AQI
31AQI
33AQI
33AQI
38AQI
41AQI
43AQI
48AQI
47AQI
47AQI
49AQI
53AQI
54AQI
54AQI
48AQI
44AQI
49AQI
50AQI
50AQI
43AQI
38AQI
34AQI
36AQI
28AQI
27AQI
30AQI
33AQI
37AQI
33AQI
28AQI
29AQI
26AQI
29AQI
33AQI
44AQI
44AQI
38AQI
31AQI
26AQI
24AQI
26AQI
26AQI
27AQI
41AQI
46AQI
37AQI
34AQI
30AQI
38AQI
36AQI
52AQI
34AQI
33AQI
41AQI
36AQI
35AQI
41AQI
49AQI
43AQI
33AQI
44AQI
No. of days
202538AQI
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
September33AQI
202436AQI
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
January28AQI
202336AQI
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
December30AQI
202241AQI
Highest AQI recorded in
June48AQI
Lowest AQI recorded in
January36AQI
202137AQI
Highest AQI recorded in
June42AQI
Lowest AQI recorded in
April30AQI
202037AQI
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
April28AQI
Most & Least Polluted Years Over the Last 6 Years
Honjo's annual 2025 AQI (38) shows an average percentage change of 2.8% (worsened AQI) compared to previous years: 2020 (37), 2021 (37), 2022 (41), 2023 (36), 2024 (36).