Shimokuwajimamachi, Utsunomiya, Tochigi, 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
Shimokuwajimamachi, Utsunomiya, Tochigi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (5th February):
On this day, AQI across the 4 years varied significantly: 2026 ranks 1st highest AQI at 42 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Feb - 5th Feb 2026
Shimokuwajimamachi, Utsunomiya, Tochigi, Japan
6 AM4th Feb 2026
4 PM
5 AM5th Feb 2026
56AQI
27AQI
53AQI
17AQI
In the last 24 hours,
Shimokuwajimamachi's AQI reached its highest point of 56 at 10 AM during the Day, while the lowest point, 17, was recorded at 8 PM during the Night between 4th Feb and 5th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Shimokuwajimamachi, Utsunomiya, Tochigi, Japan
3°C1/5°C
3°C0/8°C
2°C-1/6°C
5°C2/9°C
5°C0/9°C
2°C0/6°C
5°C0/12°C
4°C2/8°C
4°C1/9°C
7°C3/13°C
7°C3/12°C
5°C2/9°C
5°C1/8°C
4°C0/10°C
2°C0/5°C
1°C-1/3°C
1°C-2/6°C
2°C-1/7°C
1°C-1/4°C
1°C-1/5°C
4°C1/8°C
3°C0/7°C
2°C0/7°C
2°C-1/5°C
2°C-1/6°C
3°C-1/8°C
3°C0/8°C
3°C0/8°C
4°C0/10°C
7°C2/11°C
42AQI
28AQI
35AQI
28AQI
2026 Days Vs Air Quality
Shimokuwajimamachi, Utsunomiya, Tochigi, Japan
94%
34
6%
2
Total number of days with different AQI categories in last 37 days in 2026 (328 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2026, 94% of 37 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
Shimokuwajimamachi, Utsunomiya, Tochigi, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
19AQI (US)
20AQI (US)
25AQI (US)
24AQI (US)
31AQI (US)
26AQI (US)
37AQI (US)
42AQI (US)
32AQI (US)
43AQI (US)
41AQI (US)
14AQI (US)
31AQI (US)
16AQI (US)
34AQI (US)
52AQI (US)
48AQI (US)
26AQI (US)
51AQI (US)
34AQI (US)
19AQI (US)
24AQI (US)
41AQI (US)
39AQI (US)
36AQI (US)
15AQI (US)
23AQI (US)
30AQI (US)
31AQI (US)
37AQI (US)
43AQI (US)
40AQI (US)
20AQI (US)
23AQI (US)
39AQI (US)
42AQI (US)
32AQI (US)
33AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
February33AQI (US)
Lowest AQI (US) recorded in
January32AQI (US)
202540AQI (US)
Highest AQI (US) recorded in
October49AQI (US)
Lowest AQI (US) recorded in
February32AQI (US)
202429AQI (US)
Highest AQI (US) recorded in
April35AQI (US)
Lowest AQI (US) recorded in
August21AQI (US)
202327AQI (US)
Highest AQI (US) recorded in
December29AQI (US)
Lowest AQI (US) recorded in
July24AQI (US)
202224AQI (US)
Highest AQI (US) recorded in
February31AQI (US)
Lowest AQI (US) recorded in
September16AQI (US)
202128AQI (US)
Highest AQI (US) recorded in
March39AQI (US)
Lowest AQI (US) recorded in
April20AQI (US)
202036AQI (US)
Highest AQI (US) recorded in
August45AQI (US)
Lowest AQI (US) recorded in
September28AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Shimokuwajimamachi's annual 2026 AQI (US) (32) shows an average percentage change of 6.9% (worsened AQI (US)) compared to previous years: 2020 (36), 2021 (28), 2022 (24), 2023 (27), 2024 (29), 2025 (40).