Otemachi, Kudamatsu, Yamaguchi, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
February Air Quality Analysis
Otemachi, Kudamatsu, Yamaguchi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (6th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Feb - 6th Feb 2026
Otemachi, Kudamatsu, Yamaguchi, Japan
7 AM5th Feb 2026
5 PM
6 AM6th Feb 2026
76AQI
28AQI
70AQI
29AQI
In the last 24 hours,
Otemachi's AQI reached its highest point of 76 at 11 AM during the Day, while the lowest point, 28, was recorded at 5 PM during the Day between 5th Feb and 6th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Otemachi, Kudamatsu, Yamaguchi, Japan
3°C0/5°C
4°C0/8°C
8°C3/14°C
3°C0/4°C
4°C-1/7°C
8°C4/11°C
5°C2/10°C
8°C3/12°C
10°C6/15°C
9°C5/15°C
7°C4/12°C
9°C3/14°C
6°C0/11°C
2°C0/5°C
0°C-1/3°C
2°C-1/6°C
3°C0/7°C
2°C-2/5°C
2°C-3/7°C
5°C0/9°C
3°C-1/8°C
3°C-1/7°C
2°C-1/6°C
2°C-2/9°C
3°C-1/8°C
2°C-1/8°C
2°C-2/8°C
6°C2/11°C
8°C5/13°C
9°C5/13°C
40AQI
35AQI
39AQI
36AQI
2026 Days Vs Air Quality
Otemachi, Kudamatsu, Yamaguchi, Japan
86%
32
14%
5
Total number of days with different AQI categories in last 38 days in 2026 (327 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2026, 86% of 38 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
Otemachi, Kudamatsu, Yamaguchi, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI (US)
27AQI (US)
27AQI (US)
40AQI (US)
50AQI (US)
26AQI (US)
37AQI (US)
38AQI (US)
24AQI (US)
36AQI (US)
28AQI (US)
25AQI (US)
32AQI (US)
36AQI (US)
46AQI (US)
67AQI (US)
67AQI (US)
64AQI (US)
74AQI (US)
35AQI (US)
13AQI (US)
27AQI (US)
37AQI (US)
52AQI (US)
18AQI (US)
17AQI (US)
41AQI (US)
32AQI (US)
38AQI (US)
24AQI (US)
25AQI (US)
46AQI (US)
43AQI (US)
30AQI (US)
36AQI (US)
43AQI (US)
45AQI (US)
37AQI (US)
41AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
February41AQI (US)
Lowest AQI (US) recorded in
January37AQI (US)
202545AQI (US)
Highest AQI (US) recorded in
November54AQI (US)
Lowest AQI (US) recorded in
September30AQI (US)
202438AQI (US)
Highest AQI (US) recorded in
April50AQI (US)
Lowest AQI (US) recorded in
July30AQI (US)
202341AQI (US)
Highest AQI (US) recorded in
April54AQI (US)
Lowest AQI (US) recorded in
August26AQI (US)
202241AQI (US)
Highest AQI (US) recorded in
May52AQI (US)
Lowest AQI (US) recorded in
August26AQI (US)
202141AQI (US)
Highest AQI (US) recorded in
June51AQI (US)
Lowest AQI (US) recorded in
January35AQI (US)
202040AQI (US)
Highest AQI (US) recorded in
August50AQI (US)
Lowest AQI (US) recorded in
December34AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Otemachi's annual 2026 AQI (US) (37) shows an average percentage change of -8.7% (improved AQI (US)) compared to previous years: 2020 (40), 2021 (41), 2022 (41), 2023 (41), 2024 (38), 2025 (45).