Hiratsuka, Kanagawa, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Hiratsuka, Kanagawa, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 49 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Hiratsuka, Kanagawa, Japan
5 AM19th Sep 2025
6 PM
4 AM20th Sep 2025
AQI
AQI
52AQI
13AQI
In the last 24 hours,
Hiratsuka's AQI reached its highest point of 52 at 6 AM during the Night, while the lowest point, 13, was recorded at 11 AM during the Night between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Hiratsuka, Kanagawa, Japan
28°C26/31°C
28°C26/30°C
29°C26/32°C
29°C27/31°C
29°C27/31°C
28°C26/30°C
28°C26/32°C
28°C26/30°C
27°C25/29°C
29°C27/31°C
29°C27/31°C
29°C27/32°C
29°C27/32°C
29°C27/32°C
26°C25/26°C
25°C23/26°C
26°C24/28°C
27°C25/29°C
28°C26/30°C
28°C27/30°C
28°C26/30°C
27°C24/29°C
25°C24/27°C
26°C24/29°C
28°C27/31°C
27°C26/28°C
27°C26/29°C
28°C26/31°C
28°C24/32°C
--°C/°C
--°C/°C
45AQI
43AQI
41AQI
40AQI
2025 Days Vs Air Quality
Hiratsuka, Kanagawa, Japan
83%
94
17%
19
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 262 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Hiratsuka, Kanagawa, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI
17AQI
14AQI
15AQI
21AQI
21AQI
22AQI
33AQI
33AQI
42AQI
46AQI
30AQI
26AQI
27AQI
33AQI
28AQI
23AQI
29AQI
33AQI
36AQI
35AQI
34AQI
31AQI
24AQI
19AQI
18AQI
17AQI
18AQI
16AQI
20AQI
24AQI
26AQI
33AQI
34AQI
39AQI
37AQI
37AQI
46AQI
52AQI
70AQI
74AQI
72AQI
58AQI
54AQI
56AQI
53AQI
46AQI
47AQI
46AQI
45AQI
40AQI
37AQI
35AQI
34AQI
33AQI
31AQI
32AQI
28AQI
27AQI
26AQI
27AQI
28AQI
29AQI
29AQI
32AQI
40AQI
43AQI
60AQI
51AQI
53AQI
49AQI
48AQI
49AQI
42AQI
40AQI
36AQI
34AQI
38AQI
35AQI
38AQI
39AQI
42AQI
46AQI
47AQI
51AQI
52AQI
47AQI
57AQI
57AQI
55AQI
51AQI
47AQI
50AQI
55AQI
52AQI
45AQI
37AQI
38AQI
37AQI
31AQI
28AQI
29AQI
39AQI
42AQI
38AQI
31AQI
31AQI
30AQI
36AQI
36AQI
36AQI
46AQI
49AQI
17AQI
27AQI
42AQI
46AQI
37AQI
No. of days
202538AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
May17AQI
Most & Least Polluted Years Over the Last 1 Years
Hiratsuka's annual 2025 AQI (38) shows an average percentage change of NaN% (improved AQI) compared to previous years: .