Tokamachi, Niigata, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
Tokamachi, Niigata, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 19 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Mar - 4th Mar 2026
Tokamachi, Niigata, Japan
6 AM3rd Mar 2026
5 PM
5 AM4th Mar 2026
86AQI
32AQI
84AQI
8AQI
In the last 24 hours,
Tokamachi's AQI reached its highest point of 86 at 10 AM during the Day, while the lowest point, 8, was recorded at 5 AM during the Night between 3rd Mar and 4th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Tokamachi, Niigata, Japan
-3°C-10/0°C
-2°C-9/6°C
2°C-3/9°C
0°C-3/4°C
-4°C-8/-2°C
-5°C-9/-4°C
-3°C-8/0°C
-3°C-10/4°C
0°C-3/2°C
-1°C-6/3°C
1°C-2/6°C
3°C-3/10°C
6°C0/14°C
2°C-1/2°C
0°C-3/4°C
1°C-4/7°C
-3°C-8/1°C
-2°C-9/6°C
2°C-4/10°C
6°C0/15°C
4°C2/7°C
5°C-1/12°C
5°C3/7°C
7°C2/14°C
8°C4/13°C
6°C3/7°C
4°C1/8°C
3°C-2/8°C
5°C3/7°C
3°C1/5°C
57AQI
33AQI
52AQI
29AQI
2026 Days Vs Air Quality
Tokamachi, Niigata, Japan
92%
58
8%
5
Total number of days with different AQI categories in last 64 days in 2026 (301 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% of 64 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
Tokamachi, Niigata, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
15AQI (US)
18AQI (US)
18AQI (US)
29AQI (US)
23AQI (US)
20AQI (US)
26AQI (US)
22AQI (US)
18AQI (US)
28AQI (US)
31AQI (US)
17AQI (US)
21AQI (US)
15AQI (US)
25AQI (US)
43AQI (US)
40AQI (US)
29AQI (US)
50AQI (US)
25AQI (US)
12AQI (US)
26AQI (US)
50AQI (US)
49AQI (US)
40AQI (US)
29AQI (US)
42AQI (US)
26AQI (US)
24AQI (US)
35AQI (US)
40AQI (US)
39AQI (US)
49AQI (US)
31AQI (US)
50AQI (US)
47AQI (US)
37AQI (US)
14AQI (US)
21AQI (US)
42AQI (US)
50AQI (US)
53AQI (US)
36AQI (US)
49AQI (US)
71AQI (US)
55AQI (US)
45AQI (US)
19AQI (US)
31AQI (US)
31AQI (US)
30AQI (US)
48AQI (US)
45AQI (US)
47AQI (US)
32AQI (US)
31AQI (US)
14AQI (US)
42AQI (US)
45AQI (US)
42AQI (US)
90AQI (US)
53AQI (US)
19AQI (US)
29AQI (US)
39AQI (US)
51AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
March51AQI (US)
Lowest AQI (US) recorded in
January29AQI (US)
202540AQI (US)
Highest AQI (US) recorded in
July49AQI (US)
Lowest AQI (US) recorded in
September32AQI (US)
202433AQI (US)
Highest AQI (US) recorded in
April48AQI (US)
Lowest AQI (US) recorded in
December27AQI (US)
202334AQI (US)
Highest AQI (US) recorded in
April46AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
202234AQI (US)
Highest AQI (US) recorded in
May42AQI (US)
Lowest AQI (US) recorded in
August17AQI (US)
202130AQI (US)
Highest AQI (US) recorded in
June41AQI (US)
Lowest AQI (US) recorded in
December23AQI (US)
202026AQI (US)
Highest AQI (US) recorded in
August46AQI (US)
Lowest AQI (US) recorded in
July20AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Tokamachi's annual 2026 AQI (US) (35) shows an average percentage change of 8.1% (worsened AQI (US)) compared to previous years: 2020 (26), 2021 (30), 2022 (34), 2023 (34), 2024 (33), 2025 (40).