Higashifukawa, Nagato, 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
Higashifukawa, Nagato, 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 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Feb - 6th Feb 2026
Higashifukawa, Nagato, Yamaguchi, Japan
7 AM5th Feb 2026
5 PM
6 AM6th Feb 2026
54AQI
34AQI
67AQI
33AQI
In the last 24 hours,
Higashifukawa's AQI reached its highest point of 67 at 5 AM during the Night, while the lowest point, 33, was recorded at 6 PM during the Night between 5th Feb and 6th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Higashifukawa, Nagato, Yamaguchi, Japan
3°C2/4°C
4°C1/9°C
8°C3/13°C
2°C1/3°C
4°C0/8°C
8°C4/10°C
6°C4/9°C
9°C4/14°C
10°C7/14°C
9°C6/13°C
8°C5/11°C
8°C4/13°C
5°C0/8°C
1°C0/3°C
0°C-1/1°C
3°C1/5°C
4°C3/5°C
2°C0/4°C
3°C0/7°C
5°C2/6°C
4°C2/6°C
4°C2/5°C
2°C1/4°C
3°C0/7°C
4°C2/7°C
4°C2/7°C
4°C1/7°C
7°C3/12°C
9°C5/13°C
8°C6/9°C
40AQI
31AQI
40AQI
31AQI
2026 Days Vs Air Quality
Higashifukawa, Nagato, 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
Higashifukawa, Nagato, Yamaguchi, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI (US)
25AQI (US)
30AQI (US)
41AQI (US)
44AQI (US)
29AQI (US)
36AQI (US)
33AQI (US)
19AQI (US)
33AQI (US)
30AQI (US)
28AQI (US)
42AQI (US)
21AQI (US)
42AQI (US)
64AQI (US)
63AQI (US)
56AQI (US)
52AQI (US)
40AQI (US)
13AQI (US)
26AQI (US)
40AQI (US)
44AQI (US)
13AQI (US)
16AQI (US)
45AQI (US)
26AQI (US)
40AQI (US)
18AQI (US)
24AQI (US)
50AQI (US)
48AQI (US)
31AQI (US)
40AQI (US)
43AQI (US)
54AQI (US)
34AQI (US)
44AQI (US)
No. of days
202636AQI (US)
Highest AQI (US) recorded in
February44AQI (US)
Lowest AQI (US) recorded in
January34AQI (US)
202542AQI (US)
Highest AQI (US) recorded in
March47AQI (US)
Lowest AQI (US) recorded in
September30AQI (US)
202437AQI (US)
Highest AQI (US) recorded in
March47AQI (US)
Lowest AQI (US) recorded in
July28AQI (US)
202342AQI (US)
Highest AQI (US) recorded in
April56AQI (US)
Lowest AQI (US) recorded in
August31AQI (US)
202240AQI (US)
Highest AQI (US) recorded in
March50AQI (US)
Lowest AQI (US) recorded in
September33AQI (US)
202137AQI (US)
Highest AQI (US) recorded in
May44AQI (US)
Lowest AQI (US) recorded in
July29AQI (US)
202036AQI (US)
Highest AQI (US) recorded in
August55AQI (US)
Lowest AQI (US) recorded in
July25AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Higashifukawa's annual 2026 AQI (US) (36) shows an average percentage change of -7.3% (improved AQI (US)) compared to previous years: 2020 (36), 2021 (37), 2022 (40), 2023 (42), 2024 (37), 2025 (42).