Tanaka, Shimotsuke, 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
Tanaka, Shimotsuke, Tochigi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (8th February):
On this day, AQI across the 4 years varied significantly: 2026 ranks 4th highest AQI at 16 of Good air quality, showing improvement over 2025, 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Feb - 7th Feb 2026
Tanaka, Shimotsuke, Tochigi, Japan
6 AM6th Feb 2026
4 PM
5 AM7th Feb 2026
72AQI
38AQI
64AQI
10AQI
In the last 24 hours,
Tanaka's AQI reached its highest point of 72 at 10 AM during the Day, while the lowest point, 10, was recorded at 3 AM during the Night between 6th Feb and 7th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Tanaka, Shimotsuke, Tochigi, Japan
3°C0/7°C
6°C3/10°C
6°C2/9°C
4°C1/7°C
6°C1/12°C
5°C3/9°C
6°C2/10°C
8°C4/14°C
8°C4/13°C
6°C3/10°C
6°C2/9°C
5°C1/11°C
2°C1/5°C
2°C0/4°C
2°C-1/7°C
3°C0/8°C
2°C0/5°C
2°C0/6°C
5°C2/8°C
4°C1/8°C
3°C1/7°C
3°C0/6°C
3°C1/7°C
4°C0/9°C
4°C1/9°C
4°C1/8°C
5°C1/10°C
8°C3/12°C
9°C5/14°C
2°C0/4°C
44AQI
31AQI
39AQI
35AQI
2026 Days Vs Air Quality
Tanaka, Shimotsuke, Tochigi, Japan
90%
35
10%
4
Total number of days with different AQI categories in last 40 days in 2026 (325 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 40 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
Tanaka, Shimotsuke, Tochigi, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
22AQI (US)
24AQI (US)
27AQI (US)
30AQI (US)
43AQI (US)
27AQI (US)
41AQI (US)
45AQI (US)
33AQI (US)
50AQI (US)
52AQI (US)
22AQI (US)
38AQI (US)
15AQI (US)
38AQI (US)
57AQI (US)
52AQI (US)
36AQI (US)
53AQI (US)
48AQI (US)
24AQI (US)
30AQI (US)
42AQI (US)
46AQI (US)
39AQI (US)
17AQI (US)
26AQI (US)
33AQI (US)
29AQI (US)
36AQI (US)
42AQI (US)
44AQI (US)
21AQI (US)
24AQI (US)
46AQI (US)
46AQI (US)
46AQI (US)
16AQI (US)
16AQI (US)
36AQI (US)
32AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
January36AQI (US)
Lowest AQI (US) recorded in
February32AQI (US)
202546AQI (US)
Highest AQI (US) recorded in
December56AQI (US)
Lowest AQI (US) recorded in
May35AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
December46AQI (US)
Lowest AQI (US) recorded in
August23AQI (US)
202329AQI (US)
Highest AQI (US) recorded in
April34AQI (US)
Lowest AQI (US) recorded in
August22AQI (US)
202229AQI (US)
Highest AQI (US) recorded in
May32AQI (US)
Lowest AQI (US) recorded in
August21AQI (US)
202130AQI (US)
Highest AQI (US) recorded in
January45AQI (US)
Lowest AQI (US) recorded in
April18AQI (US)
202041AQI (US)
Highest AQI (US) recorded in
August56AQI (US)
Lowest AQI (US) recorded in
December14AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Tanaka's annual 2026 AQI (US) (35) shows an average percentage change of 6.06% (worsened AQI (US)) compared to previous years: 2020 (41), 2021 (30), 2022 (29), 2023 (29), 2024 (32), 2025 (46).