Naka Ward, Hiroshima, Hiroshima, 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
Naka Ward, Hiroshima, Hiroshima, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (27th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 51 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Aug - 29th Aug 2025
Naka Ward, Hiroshima, Hiroshima, Japan
5 AM28th Aug 2025
7 PM
4 AM29th Aug 2025
52AQI
35AQI
52AQI
44AQI
In the last 24 hours,
Naka Ward's AQI reached its highest point of 52 at 5 PM during the Day, while the lowest point, 35, was recorded at 2 PM during the Day between 28th Aug and 29th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Naka Ward, Hiroshima, Hiroshima, Japan
27°C22/32°C
27°C22/32°C
27°C23/32°C
28°C23/35°C
27°C22/32°C
27°C23/31°C
28°C24/32°C
28°C24/32°C
27°C22/32°C
26°C22/31°C
23°C21/25°C
25°C24/25°C
24°C23/25°C
24°C23/25°C
26°C23/30°C
26°C23/31°C
27°C23/32°C
27°C23/32°C
26°C23/31°C
27°C24/31°C
26°C23/30°C
26°C23/30°C
26°C23/31°C
27°C23/32°C
27°C24/31°C
27°C24/31°C
27°C24/31°C
26°C24/30°C
26°C23/29°C
26°C23/31°C
--°C/°C
47AQI
39AQI
43AQI
42AQI
2025 Days Vs Air Quality
Naka Ward, Hiroshima, Hiroshima, Japan
85%
203
15%
36
Total number of days with different AQI categories in last 241 days in 2025 (124 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 241 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
Naka Ward, Hiroshima, Hiroshima, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI
32AQI
28AQI
28AQI
25AQI
26AQI
27AQI
26AQI
27AQI
25AQI
25AQI
27AQI
32AQI
32AQI
35AQI
30AQI
28AQI
26AQI
36AQI
30AQI
38AQI
58AQI
62AQI
50AQI
44AQI
38AQI
31AQI
31AQI
29AQI
43AQI
36AQI
38AQI
29AQI
33AQI
30AQI
30AQI
30AQI
27AQI
28AQI
26AQI
27AQI
32AQI
26AQI
31AQI
33AQI
29AQI
37AQI
39AQI
33AQI
33AQI
29AQI
30AQI
35AQI
31AQI
34AQI
35AQI
36AQI
42AQI
38AQI
45AQI
67AQI
43AQI
40AQI
31AQI
35AQI
33AQI
39AQI
39AQI
40AQI
42AQI
45AQI
49AQI
29AQI
28AQI
19AQI
32AQI
20AQI
38AQI
42AQI
36AQI
65AQI
43AQI
41AQI
58AQI
73AQI
62AQI
43AQI
40AQI
39AQI
39AQI
40AQI
35AQI
24AQI
30AQI
25AQI
21AQI
20AQI
17AQI
25AQI
23AQI
24AQI
24AQI
20AQI
22AQI
19AQI
22AQI
23AQI
26AQI
23AQI
21AQI
18AQI
18AQI
14AQI
14AQI
51AQI
29AQI
37AQI
32AQI
29AQI
28AQI
47AQI
37AQI
46AQI
29AQI
32AQI
22AQI
24AQI
26AQI
39AQI
31AQI
43AQI
51AQI
43AQI
57AQI
54AQI
42AQI
43AQI
39AQI
58AQI
57AQI
40AQI
43AQI
32AQI
30AQI
22AQI
24AQI
38AQI
27AQI
47AQI
39AQI
41AQI
47AQI
53AQI
29AQI
47AQI
46AQI
44AQI
39AQI
67AQI
70AQI
33AQI
33AQI
53AQI
40AQI
41AQI
28AQI
29AQI
26AQI
32AQI
46AQI
51AQI
49AQI
63AQI
46AQI
40AQI
42AQI
50AQI
55AQI
42AQI
44AQI
55AQI
54AQI
88AQI
82AQI
99AQI
86AQI
70AQI
63AQI
68AQI
61AQI
82AQI
56AQI
51AQI
53AQI
41AQI
44AQI
44AQI
47AQI
34AQI
31AQI
29AQI
26AQI
25AQI
24AQI
38AQI
26AQI
23AQI
22AQI
33AQI
28AQI
38AQI
37AQI
41AQI
43AQI
45AQI
56AQI
47AQI
46AQI
50AQI
50AQI
36AQI
32AQI
31AQI
34AQI
39AQI
47AQI
42AQI
42AQI
41AQI
46AQI
49AQI
48AQI
42AQI
40AQI
45AQI
47AQI
50AQI
47AQI
51AQI
33AQI
32AQI
42AQI
25AQI
39AQI
45AQI
48AQI
44AQI
No. of days
202539AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
April25AQI
202440AQI
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
December27AQI
202344AQI
Highest AQI recorded in
March53AQI
Lowest AQI recorded in
August35AQI
202244AQI
Highest AQI recorded in
May55AQI
Lowest AQI recorded in
December34AQI
202142AQI
Highest AQI recorded in
September47AQI
Lowest AQI recorded in
December38AQI
202047AQI
Highest AQI recorded in
August59AQI
Lowest AQI recorded in
September37AQI
Most & Least Polluted Years Over the Last 6 Years
Naka Ward's annual 2025 AQI (39) shows an average percentage change of -10.4% (improved AQI) compared to previous years: 2020 (47), 2021 (42), 2022 (44), 2023 (44), 2024 (40).