Hitachi Naka, Ibaraki, 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
Hitachi Naka, Ibaraki, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (7th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 28 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 6th Aug - 7th Aug 2026
Hitachi Naka, Ibaraki, Japan
4 AM6th Aug 2026
6 PM
3 AM7th Aug 2026
29AQI
21AQI
31AQI
21AQI
In the last 24 hours,
Hitachi Naka's AQI reached its highest point of 31 at 10 PM during the Night, while the lowest point, 21, was recorded at 12 AM during the Night between 6th Aug and 7th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Hitachi Naka, Ibaraki, Japan
24°C21/28°C
25°C21/30°C
26°C22/31°C
23°C23/25°C
25°C22/31°C
26°C22/31°C
28°C24/33°C
27°C25/30°C
26°C24/28°C
25°C24/28°C
27°C23/30°C
29°C25/34°C
28°C25/33°C
28°C25/34°C
27°C24/32°C
24°C23/27°C
24°C22/27°C
25°C23/29°C
23°C21/26°C
24°C21/27°C
26°C22/30°C
28°C24/33°C
25°C23/30°C
26°C23/32°C
25°C22/27°C
23°C21/25°C
22°C20/25°C
24°C21/27°C
27°C24/30°C
27°C24/31°C
35AQI
32AQI
37AQI
32AQI
2026 Days Vs Air Quality
Hitachi Naka, Ibaraki, Japan
87%
190
13%
29
Total number of days with different AQI categories in last 219 days in 2026 (146 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 219 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
Hitachi Naka, Ibaraki, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
17AQI (US)
13AQI (US)
15AQI (US)
22AQI (US)
35AQI (US)
27AQI (US)
20AQI (US)
26AQI (US)
25AQI (US)
19AQI (US)
17AQI (US)
14AQI (US)
33AQI (US)
14AQI (US)
28AQI (US)
35AQI (US)
28AQI (US)
22AQI (US)
35AQI (US)
31AQI (US)
11AQI (US)
22AQI (US)
35AQI (US)
35AQI (US)
42AQI (US)
28AQI (US)
36AQI (US)
28AQI (US)
25AQI (US)
36AQI (US)
38AQI (US)
36AQI (US)
11AQI (US)
17AQI (US)
22AQI (US)
32AQI (US)
47AQI (US)
10AQI (US)
11AQI (US)
34AQI (US)
26AQI (US)
39AQI (US)
31AQI (US)
37AQI (US)
62AQI (US)
71AQI (US)
41AQI (US)
14AQI (US)
32AQI (US)
28AQI (US)
29AQI (US)
42AQI (US)
41AQI (US)
42AQI (US)
35AQI (US)
36AQI (US)
24AQI (US)
42AQI (US)
43AQI (US)
35AQI (US)
30AQI (US)
23AQI (US)
58AQI (US)
60AQI (US)
50AQI (US)
47AQI (US)
46AQI (US)
44AQI (US)
57AQI (US)
58AQI (US)
66AQI (US)
40AQI (US)
48AQI (US)
57AQI (US)
58AQI (US)
55AQI (US)
58AQI (US)
39AQI (US)
36AQI (US)
47AQI (US)
49AQI (US)
49AQI (US)
58AQI (US)
41AQI (US)
20AQI (US)
27AQI (US)
47AQI (US)
51AQI (US)
53AQI (US)
31AQI (US)
15AQI (US)
28AQI (US)
48AQI (US)
45AQI (US)
43AQI (US)
18AQI (US)
35AQI (US)
20AQI (US)
29AQI (US)
46AQI (US)
21AQI (US)
25AQI (US)
36AQI (US)
36AQI (US)
37AQI (US)
25AQI (US)
34AQI (US)
33AQI (US)
37AQI (US)
34AQI (US)
38AQI (US)
42AQI (US)
34AQI (US)
25AQI (US)
37AQI (US)
49AQI (US)
47AQI (US)
41AQI (US)
37AQI (US)
39AQI (US)
47AQI (US)
49AQI (US)
45AQI (US)
32AQI (US)
22AQI (US)
31AQI (US)
30AQI (US)
26AQI (US)
20AQI (US)
30AQI (US)
29AQI (US)
34AQI (US)
39AQI (US)
37AQI (US)
34AQI (US)
86AQI (US)
70AQI (US)
53AQI (US)
49AQI (US)
62AQI (US)
59AQI (US)
60AQI (US)
53AQI (US)
58AQI (US)
47AQI (US)
39AQI (US)
24AQI (US)
20AQI (US)
18AQI (US)
25AQI (US)
26AQI (US)
29AQI (US)
25AQI (US)
12AQI (US)
12AQI (US)
22AQI (US)
22AQI (US)
21AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
24AQI (US)
24AQI (US)
27AQI (US)
30AQI (US)
13AQI (US)
18AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
21AQI (US)
20AQI (US)
19AQI (US)
22AQI (US)
21AQI (US)
26AQI (US)
29AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
23AQI (US)
22AQI (US)
22AQI (US)
25AQI (US)
23AQI (US)
24AQI (US)
25AQI (US)
21AQI (US)
19AQI (US)
25AQI (US)
28AQI (US)
27AQI (US)
51AQI (US)
43AQI (US)
59AQI (US)
84AQI (US)
41AQI (US)
13AQI (US)
22AQI (US)
32AQI (US)
57AQI (US)
65AQI (US)
53AQI (US)
18AQI (US)
21AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
26AQI (US)
38AQI (US)
40AQI (US)
53AQI (US)
24AQI (US)
20AQI (US)
23AQI (US)
26AQI (US)
23AQI (US)
28AQI (US)
26AQI (US)
33AQI (US)
46AQI (US)
34AQI (US)
40AQI (US)
23AQI (US)
33AQI (US)
28AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
June23AQI (US)
202538AQI (US)
Highest AQI (US) recorded in
July46AQI (US)
Lowest AQI (US) recorded in
September33AQI (US)
202434AQI (US)
Highest AQI (US) recorded in
July47AQI (US)
Lowest AQI (US) recorded in
August26AQI (US)
202335AQI (US)
Highest AQI (US) recorded in
April42AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202236AQI (US)
Highest AQI (US) recorded in
June41AQI (US)
Lowest AQI (US) recorded in
August21AQI (US)
202133AQI (US)
Highest AQI (US) recorded in
June38AQI (US)
Lowest AQI (US) recorded in
July28AQI (US)
202031AQI (US)
Highest AQI (US) recorded in
August40AQI (US)
Lowest AQI (US) recorded in
December25AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Hitachi Naka's annual 2026 AQI (US) (34) shows an average percentage change of -1.03% (improved AQI (US)) compared to previous years: 2020 (31), 2021 (33), 2022 (36), 2023 (35), 2024 (34), 2025 (38).