Kosugimachi, Kawanakajima, Kanagawa, 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
Kosugimachi, Kawanakajima, Kanagawa, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (9th February):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 33 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
Kosugimachi, Kawanakajima, Kanagawa, Japan
6 AM8th Feb 2026
5 PM
5 AM9th Feb 2026
12AQI
4AQI
51AQI
4AQI
In the last 24 hours,
Kosugimachi's AQI reached its highest point of 51 at 4 AM during the Night, while the lowest point, 4, was recorded at 3 AM during the Night between 8th Feb and 9th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Kosugimachi, Kawanakajima, Kanagawa, Japan
10°C5/13°C
6°C4/8°C
10°C6/14°C
9°C7/10°C
9°C6/12°C
12°C10/15°C
11°C8/13°C
8°C7/9°C
8°C7/10°C
8°C4/11°C
3°C2/6°C
4°C3/6°C
5°C3/8°C
7°C5/10°C
5°C4/7°C
5°C2/7°C
6°C3/8°C
7°C5/9°C
6°C4/7°C
5°C4/7°C
5°C3/8°C
7°C4/9°C
7°C4/9°C
8°C5/10°C
8°C5/9°C
10°C7/11°C
10°C7/13°C
3°C1/4°C
0°C-1/1°C
3°C-1/7°C
38AQI
24AQI
37AQI
27AQI
2026 Days Vs Air Quality
Kosugimachi, Kawanakajima, Kanagawa, Japan
98%
39
3%
1
Total number of days with different AQI categories in last 41 days in 2026 (324 days remaining)
Under WHO’s Safe Air Quality Limits: 98%
Health Risk Level:
Very Low
In 2026, 98% 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
Kosugimachi, Kawanakajima, Kanagawa, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI (US)
13AQI (US)
12AQI (US)
17AQI (US)
33AQI (US)
16AQI (US)
20AQI (US)
27AQI (US)
14AQI (US)
27AQI (US)
23AQI (US)
15AQI (US)
30AQI (US)
16AQI (US)
26AQI (US)
40AQI (US)
48AQI (US)
20AQI (US)
34AQI (US)
33AQI (US)
10AQI (US)
19AQI (US)
36AQI (US)
38AQI (US)
44AQI (US)
24AQI (US)
38AQI (US)
13AQI (US)
15AQI (US)
38AQI (US)
37AQI (US)
35AQI (US)
44AQI (US)
27AQI (US)
37AQI (US)
57AQI (US)
50AQI (US)
12AQI (US)
10AQI (US)
33AQI (US)
26AQI (US)
34AQI (US)
No. of days
202628AQI (US)
Highest AQI (US) recorded in
February34AQI (US)
Lowest AQI (US) recorded in
January26AQI (US)
202533AQI (US)
Highest AQI (US) recorded in
August46AQI (US)
Lowest AQI (US) recorded in
April22AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
July39AQI (US)
Lowest AQI (US) recorded in
March13AQI (US)
202323AQI (US)
Highest AQI (US) recorded in
December23AQI (US)
Lowest AQI (US) recorded in
November21AQI (US)
202133AQI (US)
Highest AQI (US) recorded in
January36AQI (US)
Lowest AQI (US) recorded in
February31AQI (US)
202034AQI (US)
Highest AQI (US) recorded in
August43AQI (US)
Lowest AQI (US) recorded in
September24AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Kosugimachi's annual 2026 AQI (US) (28) shows an average percentage change of -8.7% (improved AQI (US)) compared to previous years: 2020 (34), 2021 (33), 2023 (23), 2024 (32), 2025 (33).