Seijo, Kamirenjaku, 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
Seijo, Kamirenjaku, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (9th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 32 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 8th Feb - 9th Feb 2026
Seijo, Kamirenjaku, Tokyo, Japan
6 AM8th Feb 2026
5 PM
5 AM9th Feb 2026
23AQI
10AQI
52AQI
8AQI
In the last 24 hours,
Seijo's AQI reached its highest point of 52 at 4 AM during the Night, while the lowest point, 8, was recorded at 3 AM during the Night between 8th Feb and 9th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Seijo, Kamirenjaku, Tokyo, Japan
9°C3/12°C
5°C2/7°C
9°C4/14°C
8°C5/10°C
8°C5/11°C
11°C7/15°C
10°C7/13°C
8°C6/10°C
8°C6/10°C
7°C2/12°C
3°C2/5°C
3°C1/6°C
4°C1/7°C
6°C3/10°C
4°C2/7°C
4°C1/7°C
6°C3/8°C
6°C4/8°C
5°C3/7°C
4°C2/7°C
4°C2/7°C
6°C3/9°C
7°C4/9°C
7°C4/10°C
7°C4/10°C
9°C6/11°C
9°C7/13°C
3°C1/4°C
0°C-1/1°C
2°C-1/6°C
42AQI
28AQI
36AQI
31AQI
2026 Days Vs Air Quality
Seijo, Kamirenjaku, Tokyo, Japan
95%
38
5%
2
Total number of days with different AQI categories in last 41 days in 2026 (324 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2026, 95% of 41 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
Seijo, Kamirenjaku, Tokyo, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI (US)
16AQI (US)
13AQI (US)
23AQI (US)
37AQI (US)
10AQI (US)
25AQI (US)
33AQI (US)
16AQI (US)
33AQI (US)
31AQI (US)
16AQI (US)
32AQI (US)
23AQI (US)
35AQI (US)
46AQI (US)
49AQI (US)
27AQI (US)
41AQI (US)
38AQI (US)
15AQI (US)
20AQI (US)
38AQI (US)
40AQI (US)
46AQI (US)
29AQI (US)
40AQI (US)
12AQI (US)
19AQI (US)
34AQI (US)
37AQI (US)
37AQI (US)
37AQI (US)
30AQI (US)
38AQI (US)
57AQI (US)
52AQI (US)
13AQI (US)
16AQI (US)
32AQI (US)
29AQI (US)
35AQI (US)
No. of days
202630AQI (US)
Highest AQI (US) recorded in
February35AQI (US)
Lowest AQI (US) recorded in
January29AQI (US)
202534AQI (US)
Highest AQI (US) recorded in
August46AQI (US)
Lowest AQI (US) recorded in
June20AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
July40AQI (US)
Lowest AQI (US) recorded in
August24AQI (US)
202332AQI (US)
Highest AQI (US) recorded in
April43AQI (US)
Lowest AQI (US) recorded in
August19AQI (US)
202230AQI (US)
Highest AQI (US) recorded in
April36AQI (US)
Lowest AQI (US) recorded in
August21AQI (US)
202123AQI (US)
Highest AQI (US) recorded in
June34AQI (US)
Lowest AQI (US) recorded in
February12AQI (US)
202016AQI (US)
Highest AQI (US) recorded in
August24AQI (US)
Lowest AQI (US) recorded in
April12AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Seijo's annual 2026 AQI (US) (30) shows an average percentage change of 17.8% (worsened AQI (US)) compared to previous years: 2020 (16), 2021 (23), 2022 (30), 2023 (32), 2024 (32), 2025 (34).