Nonakacho, Hitachiomiya, 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
Nonakacho, Hitachiomiya, Ibaraki, 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 44 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Nonakacho, Hitachiomiya, Ibaraki, Japan
4 AM4th Aug 2025
6 PM
3 AM5th Aug 2025
76AQI
40AQI
64AQI
39AQI
In the last 24 hours,
Nonakacho's AQI reached its highest point of 76 at 5 PM during the Day, while the lowest point, 39, was recorded at 3 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Nonakacho, Hitachiomiya, Ibaraki, Japan
26°C23/30°C
26°C23/30°C
26°C24/29°C
27°C24/30°C
23°C21/26°C
21°C19/23°C
20°C19/22°C
23°C19/27°C
24°C22/26°C
24°C24/25°C
24°C24/26°C
26°C23/29°C
25°C22/29°C
25°C22/29°C
26°C23/29°C
26°C23/30°C
27°C24/31°C
27°C24/31°C
27°C24/31°C
27°C24/31°C
27°C24/31°C
27°C24/32°C
27°C24/31°C
26°C23/31°C
25°C22/28°C
24°C22/27°C
25°C22/27°C
27°C24/33°C
26°C24/29°C
27°C24/31°C
--°C/°C
49AQI
46AQI
46AQI
45AQI
2025 Days Vs Air Quality
Nonakacho, Hitachiomiya, Ibaraki, Japan
91%
196
9%
20
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% 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
Nonakacho, Hitachiomiya, Ibaraki, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
29AQI
25AQI
27AQI
32AQI
49AQI
29AQI
35AQI
27AQI
29AQI
26AQI
29AQI
28AQI
30AQI
30AQI
28AQI
28AQI
29AQI
44AQI
34AQI
43AQI
34AQI
39AQI
34AQI
33AQI
31AQI
32AQI
33AQI
30AQI
30AQI
29AQI
30AQI
29AQI
31AQI
30AQI
32AQI
30AQI
33AQI
31AQI
30AQI
30AQI
31AQI
37AQI
32AQI
32AQI
31AQI
34AQI
35AQI
31AQI
32AQI
30AQI
32AQI
32AQI
32AQI
33AQI
36AQI
38AQI
41AQI
48AQI
45AQI
53AQI
36AQI
37AQI
27AQI
32AQI
33AQI
34AQI
33AQI
38AQI
40AQI
42AQI
44AQI
37AQI
36AQI
23AQI
20AQI
24AQI
18AQI
25AQI
34AQI
47AQI
48AQI
49AQI
64AQI
63AQI
69AQI
46AQI
39AQI
35AQI
33AQI
26AQI
22AQI
21AQI
19AQI
26AQI
26AQI
33AQI
37AQI
28AQI
46AQI
41AQI
37AQI
28AQI
29AQI
27AQI
24AQI
42AQI
51AQI
63AQI
57AQI
45AQI
51AQI
28AQI
39AQI
37AQI
48AQI
47AQI
52AQI
33AQI
43AQI
37AQI
29AQI
34AQI
33AQI
35AQI
29AQI
27AQI
29AQI
32AQI
20AQI
22AQI
19AQI
36AQI
34AQI
41AQI
46AQI
27AQI
42AQI
36AQI
61AQI
56AQI
52AQI
46AQI
40AQI
28AQI
29AQI
25AQI
25AQI
28AQI
22AQI
17AQI
20AQI
31AQI
34AQI
26AQI
41AQI
46AQI
53AQI
61AQI
52AQI
41AQI
32AQI
39AQI
35AQI
36AQI
28AQI
29AQI
36AQI
36AQI
38AQI
36AQI
35AQI
31AQI
31AQI
31AQI
29AQI
27AQI
32AQI
32AQI
37AQI
41AQI
40AQI
42AQI
46AQI
44AQI
49AQI
55AQI
67AQI
68AQI
70AQI
57AQI
48AQI
50AQI
50AQI
43AQI
41AQI
44AQI
42AQI
41AQI
36AQI
38AQI
44AQI
42AQI
46AQI
48AQI
50AQI
49AQI
45AQI
46AQI
39AQI
39AQI
36AQI
36AQI
40AQI
42AQI
44AQI
32AQI
33AQI
39AQI
37AQI
33AQI
36AQI
47AQI
41AQI
No. of days
202537AQI
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
January32AQI
202433AQI
Highest AQI recorded in
April44AQI
Lowest AQI recorded in
August26AQI
202337AQI
Highest AQI recorded in
April45AQI
Lowest AQI recorded in
January31AQI
202235AQI
Highest AQI recorded in
June41AQI
Lowest AQI recorded in
December27AQI
202132AQI
Highest AQI recorded in
June38AQI
Lowest AQI recorded in
January25AQI
202031AQI
Highest AQI recorded in
August42AQI
Lowest AQI recorded in
September25AQI
Most & Least Polluted Years Over the Last 6 Years
Nonakacho's annual 2025 AQI (37) shows an average percentage change of 9.8% (worsened AQI) compared to previous years: 2020 (31), 2021 (32), 2022 (35), 2023 (37), 2024 (33).