Koto, Shibuya, Tokyo, 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
Koto, Shibuya, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (5th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 62 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Feb - 5th Feb 2026
Koto, Shibuya, Tokyo, Japan
6 AM4th Feb 2026
4 PM
5 AM5th Feb 2026
52AQI
27AQI
68AQI
36AQI
In the last 24 hours,
Koto's AQI reached its highest point of 68 at 2 AM during the Night, while the lowest point, 27, was recorded at 2 PM during the Day between 4th Feb and 5th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Koto, Shibuya, Tokyo, Japan
5°C4/6°C
6°C4/10°C
6°C3/8°C
10°C6/14°C
10°C4/13°C
5°C3/7°C
10°C5/14°C
8°C6/10°C
8°C5/11°C
12°C8/15°C
11°C8/13°C
8°C6/9°C
8°C7/9°C
7°C4/11°C
4°C3/6°C
4°C2/6°C
4°C2/7°C
6°C4/10°C
4°C3/7°C
4°C2/7°C
6°C3/8°C
6°C4/8°C
5°C3/7°C
5°C3/7°C
5°C2/8°C
6°C4/8°C
7°C5/10°C
7°C4/9°C
8°C5/9°C
9°C6/11°C
42AQI
32AQI
41AQI
32AQI
2026 Days Vs Air Quality
Koto, Shibuya, Tokyo, Japan
92%
33
8%
3
Total number of days with different AQI categories in last 37 days in 2026 (328 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% 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
Koto, Shibuya, Tokyo, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
16AQI (US)
23AQI (US)
19AQI (US)
29AQI (US)
55AQI (US)
19AQI (US)
30AQI (US)
40AQI (US)
15AQI (US)
42AQI (US)
35AQI (US)
22AQI (US)
35AQI (US)
18AQI (US)
32AQI (US)
50AQI (US)
55AQI (US)
24AQI (US)
45AQI (US)
46AQI (US)
15AQI (US)
20AQI (US)
40AQI (US)
42AQI (US)
43AQI (US)
23AQI (US)
45AQI (US)
19AQI (US)
21AQI (US)
35AQI (US)
38AQI (US)
40AQI (US)
45AQI (US)
27AQI (US)
40AQI (US)
62AQI (US)
32AQI (US)
43AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
January32AQI (US)
202536AQI (US)
Highest AQI (US) recorded in
October52AQI (US)
Lowest AQI (US) recorded in
May21AQI (US)
202431AQI (US)
Highest AQI (US) recorded in
April38AQI (US)
Lowest AQI (US) recorded in
September24AQI (US)
202330AQI (US)
Highest AQI (US) recorded in
April41AQI (US)
Lowest AQI (US) recorded in
August17AQI (US)
202233AQI (US)
Highest AQI (US) recorded in
August59AQI (US)
Lowest AQI (US) recorded in
December27AQI (US)
202136AQI (US)
Highest AQI (US) recorded in
December41AQI (US)
Lowest AQI (US) recorded in
September33AQI (US)
202016AQI (US)
Highest AQI (US) recorded in
August24AQI (US)
Lowest AQI (US) recorded in
April10AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Koto's annual 2026 AQI (US) (33) shows an average percentage change of 19.04% (worsened AQI (US)) compared to previous years: 2020 (16), 2021 (36), 2022 (33), 2023 (30), 2024 (31), 2025 (36).