Chigasaki, Kanagawa, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Chigasaki, Kanagawa, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Chigasaki, Kanagawa, Japan
4 AM5th Aug 2025
6 PM
3 AM6th Aug 2025
AQI
AQI
63AQI
48AQI
In the last 24 hours,
Chigasaki's AQI reached its highest point of 63 at 11 AM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Chigasaki, Kanagawa, Japan
28°C26/31°C
28°C26/30°C
28°C26/29°C
28°C24/30°C
24°C23/26°C
25°C22/28°C
26°C24/28°C
27°C25/29°C
27°C26/28°C
27°C25/28°C
27°C26/28°C
26°C25/28°C
27°C25/29°C
27°C26/29°C
28°C27/30°C
28°C27/30°C
28°C27/30°C
28°C27/31°C
29°C27/30°C
29°C27/31°C
28°C27/30°C
28°C27/31°C
29°C26/31°C
29°C26/33°C
28°C26/32°C
28°C27/31°C
29°C27/31°C
29°C27/33°C
30°C28/32°C
--°C/°C
--°C/°C
45AQI
39AQI
45AQI
43AQI
2025 Days Vs Air Quality
Chigasaki, Kanagawa, Japan
94%
202
6%
14
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 217 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
Chigasaki, Kanagawa, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
29AQI
23AQI
25AQI
21AQI
53AQI
31AQI
34AQI
30AQI
28AQI
25AQI
25AQI
32AQI
26AQI
32AQI
22AQI
26AQI
24AQI
28AQI
28AQI
31AQI
37AQI
40AQI
40AQI
38AQI
34AQI
31AQI
30AQI
30AQI
27AQI
27AQI
25AQI
24AQI
31AQI
31AQI
31AQI
28AQI
28AQI
28AQI
29AQI
27AQI
29AQI
29AQI
30AQI
28AQI
28AQI
31AQI
34AQI
29AQI
29AQI
28AQI
30AQI
30AQI
32AQI
32AQI
34AQI
35AQI
37AQI
39AQI
53AQI
43AQI
40AQI
30AQI
29AQI
27AQI
32AQI
30AQI
35AQI
34AQI
32AQI
31AQI
35AQI
24AQI
21AQI
17AQI
15AQI
15AQI
14AQI
16AQI
22AQI
27AQI
30AQI
30AQI
44AQI
60AQI
54AQI
38AQI
29AQI
31AQI
28AQI
21AQI
20AQI
17AQI
18AQI
17AQI
15AQI
16AQI
18AQI
21AQI
23AQI
23AQI
22AQI
18AQI
24AQI
20AQI
20AQI
24AQI
29AQI
31AQI
25AQI
24AQI
22AQI
16AQI
18AQI
18AQI
20AQI
23AQI
21AQI
16AQI
21AQI
21AQI
17AQI
16AQI
20AQI
17AQI
17AQI
15AQI
17AQI
17AQI
14AQI
16AQI
16AQI
19AQI
17AQI
19AQI
19AQI
20AQI
21AQI
23AQI
52AQI
29AQI
29AQI
24AQI
23AQI
17AQI
19AQI
23AQI
15AQI
18AQI
15AQI
14AQI
14AQI
16AQI
18AQI
16AQI
21AQI
21AQI
36AQI
27AQI
25AQI
21AQI
23AQI
24AQI
21AQI
18AQI
24AQI
22AQI
26AQI
27AQI
24AQI
22AQI
19AQI
12AQI
13AQI
15AQI
20AQI
16AQI
18AQI
20AQI
20AQI
33AQI
34AQI
38AQI
36AQI
37AQI
48AQI
58AQI
74AQI
73AQI
73AQI
56AQI
53AQI
56AQI
53AQI
45AQI
48AQI
46AQI
47AQI
41AQI
35AQI
34AQI
35AQI
31AQI
31AQI
33AQI
31AQI
32AQI
29AQI
29AQI
31AQI
32AQI
32AQI
32AQI
41AQI
44AQI
54AQI
30AQI
30AQI
31AQI
21AQI
20AQI
21AQI
43AQI
43AQI
No. of days
202528AQI
Highest AQI recorded in
July43AQI
Lowest AQI recorded in
May20AQI
202435AQI
Highest AQI recorded in
July44AQI
Lowest AQI recorded in
December25AQI
202342AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
September37AQI
202240AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
December34AQI
202139AQI
Highest AQI recorded in
May46AQI
Lowest AQI recorded in
March34AQI
202038AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
September30AQI
Most & Least Polluted Years Over the Last 6 Years
Chigasaki's annual 2025 AQI (28) shows an average percentage change of -26.7% (improved AQI) compared to previous years: 2020 (38), 2021 (39), 2022 (40), 2023 (42), 2024 (35).