Hanazakicho, Narita, Chiba, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Hanazakicho, Narita, Chiba, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (18th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 57 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Oct - 19th Oct 2025
Hanazakicho, Narita, Chiba, Japan
5 AM18th Oct 2025
5 PM
4 AM19th Oct 2025
68AQI
48AQI
68AQI
45AQI
In the last 24 hours,
Hanazakicho's AQI reached its highest point of 68 at 4 PM during the Day, while the lowest point, 45, was recorded at 12 AM during the Night between 18th Oct and 19th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Hanazakicho, Narita, Chiba, Japan
22°C20/23°C
25°C22/28°C
26°C21/30°C
23°C21/25°C
22°C19/26°C
22°C19/26°C
24°C20/29°C
26°C22/31°C
24°C22/27°C
24°C22/27°C
26°C22/31°C
24°C21/27°C
20°C18/21°C
22°C18/27°C
23°C20/26°C
23°C21/26°C
25°C21/29°C
23°C21/27°C
21°C20/24°C
23°C20/28°C
21°C18/22°C
20°C17/23°C
19°C17/20°C
21°C16/25°C
21°C19/23°C
19°C16/21°C
18°C16/20°C
21°C19/24°C
20°C18/24°C
22°C18/26°C
--°C/°C
46AQI
41AQI
44AQI
43AQI
2025 Days Vs Air Quality
Hanazakicho, Narita, Chiba, Japan
87%
253
13%
38
Total number of days with different AQI categories in last 292 days in 2025 (73 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 292 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
Hanazakicho, Narita, Chiba, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
32AQI
26AQI
30AQI
36AQI
54AQI
34AQI
39AQI
31AQI
31AQI
35AQI
32AQI
32AQI
39AQI
39AQI
35AQI
33AQI
38AQI
52AQI
42AQI
42AQI
43AQI
46AQI
42AQI
40AQI
35AQI
37AQI
37AQI
31AQI
32AQI
31AQI
38AQI
30AQI
37AQI
33AQI
33AQI
30AQI
30AQI
31AQI
31AQI
32AQI
33AQI
34AQI
40AQI
32AQI
39AQI
40AQI
39AQI
33AQI
32AQI
31AQI
32AQI
33AQI
33AQI
33AQI
35AQI
36AQI
41AQI
51AQI
45AQI
62AQI
39AQI
42AQI
27AQI
32AQI
32AQI
34AQI
34AQI
38AQI
37AQI
39AQI
42AQI
38AQI
34AQI
23AQI
19AQI
23AQI
19AQI
24AQI
40AQI
50AQI
53AQI
51AQI
68AQI
79AQI
71AQI
47AQI
40AQI
39AQI
34AQI
28AQI
23AQI
20AQI
20AQI
24AQI
22AQI
32AQI
38AQI
29AQI
48AQI
41AQI
37AQI
32AQI
41AQI
29AQI
34AQI
44AQI
51AQI
61AQI
47AQI
47AQI
45AQI
31AQI
40AQI
41AQI
48AQI
49AQI
43AQI
36AQI
45AQI
37AQI
30AQI
31AQI
37AQI
32AQI
26AQI
23AQI
26AQI
27AQI
23AQI
31AQI
27AQI
38AQI
30AQI
37AQI
40AQI
27AQI
45AQI
41AQI
64AQI
46AQI
48AQI
42AQI
41AQI
32AQI
28AQI
26AQI
24AQI
28AQI
24AQI
18AQI
25AQI
26AQI
33AQI
31AQI
41AQI
45AQI
49AQI
57AQI
42AQI
35AQI
30AQI
37AQI
36AQI
33AQI
36AQI
38AQI
48AQI
45AQI
42AQI
37AQI
30AQI
22AQI
24AQI
22AQI
23AQI
22AQI
29AQI
28AQI
33AQI
37AQI
37AQI
42AQI
45AQI
41AQI
48AQI
65AQI
72AQI
72AQI
71AQI
58AQI
50AQI
51AQI
49AQI
43AQI
43AQI
40AQI
41AQI
38AQI
35AQI
33AQI
34AQI
33AQI
35AQI
33AQI
32AQI
31AQI
29AQI
31AQI
28AQI
29AQI
30AQI
33AQI
40AQI
42AQI
59AQI
48AQI
49AQI
46AQI
44AQI
43AQI
39AQI
38AQI
35AQI
31AQI
32AQI
32AQI
34AQI
37AQI
41AQI
43AQI
46AQI
49AQI
48AQI
47AQI
53AQI
52AQI
52AQI
47AQI
43AQI
49AQI
51AQI
49AQI
41AQI
35AQI
35AQI
30AQI
30AQI
28AQI
28AQI
35AQI
40AQI
34AQI
30AQI
29AQI
27AQI
31AQI
35AQI
30AQI
47AQI
43AQI
32AQI
31AQI
29AQI
27AQI
25AQI
25AQI
29AQI
44AQI
35AQI
32AQI
28AQI
25AQI
35AQI
47AQI
51AQI
61AQI
57AQI
52AQI
52AQI
57AQI
58AQI
56AQI
51AQI
49AQI
58AQI
55AQI
48AQI
58AQI
53AQI
57AQI
37AQI
35AQI
40AQI
38AQI
33AQI
35AQI
43AQI
44AQI
32AQI
53AQI
No. of days
202538AQI
Highest AQI recorded in
October53AQI
Lowest AQI recorded in
September32AQI
202438AQI
Highest AQI recorded in
July53AQI
Lowest AQI recorded in
August29AQI
202339AQI
Highest AQI recorded in
April46AQI
Lowest AQI recorded in
August26AQI
202239AQI
Highest AQI recorded in
March43AQI
Lowest AQI recorded in
August21AQI
202137AQI
Highest AQI recorded in
January45AQI
Lowest AQI recorded in
August29AQI
202034AQI
Highest AQI recorded in
November42AQI
Lowest AQI recorded in
September25AQI
Most & Least Polluted Years Over the Last 6 Years
Hanazakicho's annual 2025 AQI (38) shows an average percentage change of 3.02% (worsened AQI) compared to previous years: 2020 (34), 2021 (37), 2022 (39), 2023 (39), 2024 (38).