Yokoshiba, Chiba, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
March Air Quality Analysis
Yokoshiba, Chiba, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (7th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 42 of Good air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Mar - 7th Mar 2026
Yokoshiba, Chiba, Japan
6 AM6th Mar 2026
5 PM
5 AM7th Mar 2026
66AQI
12AQI
72AQI
12AQI
In the last 24 hours,
Yokoshiba's AQI reached its highest point of 72 at 11 PM during the Night, while the lowest point, 12, was recorded at 8 PM during the Night between 6th Mar and 7th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Yokoshiba, Chiba, Japan
10°C7/14°C
4°C2/6°C
1°C-1/3°C
2°C-2/6°C
7°C3/12°C
9°C7/12°C
6°C5/7°C
7°C6/8°C
10°C6/15°C
13°C10/17°C
10°C5/12°C
6°C4/9°C
8°C6/11°C
6°C3/9°C
8°C4/11°C
11°C7/14°C
13°C9/16°C
16°C13/20°C
13°C11/15°C
12°C9/16°C
9°C8/11°C
11°C9/13°C
13°C10/17°C
12°C9/15°C
12°C11/12°C
10°C9/11°C
8°C5/12°C
10°C6/15°C
11°C9/14°C
13°C8/16°C
54AQI
31AQI
42AQI
32AQI
2026 Days Vs Air Quality
Yokoshiba, Chiba, Japan
92%
61
8%
5
Total number of days with different AQI categories in last 67 days in 2026 (298 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2026, 92% of 67 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
Yokoshiba, Chiba, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
13AQI (US)
15AQI (US)
13AQI (US)
28AQI (US)
40AQI (US)
16AQI (US)
24AQI (US)
37AQI (US)
17AQI (US)
30AQI (US)
34AQI (US)
21AQI (US)
40AQI (US)
15AQI (US)
25AQI (US)
45AQI (US)
43AQI (US)
26AQI (US)
39AQI (US)
32AQI (US)
11AQI (US)
22AQI (US)
15AQI (US)
34AQI (US)
18AQI (US)
18AQI (US)
40AQI (US)
29AQI (US)
17AQI (US)
36AQI (US)
37AQI (US)
39AQI (US)
37AQI (US)
18AQI (US)
41AQI (US)
57AQI (US)
61AQI (US)
9AQI (US)
10AQI (US)
35AQI (US)
39AQI (US)
54AQI (US)
36AQI (US)
44AQI (US)
57AQI (US)
48AQI (US)
47AQI (US)
16AQI (US)
32AQI (US)
28AQI (US)
19AQI (US)
37AQI (US)
38AQI (US)
32AQI (US)
36AQI (US)
34AQI (US)
25AQI (US)
42AQI (US)
39AQI (US)
34AQI (US)
57AQI (US)
40AQI (US)
48AQI (US)
50AQI (US)
46AQI (US)
42AQI (US)
27AQI (US)
36AQI (US)
45AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
March45AQI (US)
Lowest AQI (US) recorded in
January27AQI (US)
202538AQI (US)
Highest AQI (US) recorded in
October47AQI (US)
Lowest AQI (US) recorded in
September32AQI (US)
202436AQI (US)
Highest AQI (US) recorded in
July47AQI (US)
Lowest AQI (US) recorded in
August25AQI (US)
202338AQI (US)
Highest AQI (US) recorded in
April45AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202239AQI (US)
Highest AQI (US) recorded in
March45AQI (US)
Lowest AQI (US) recorded in
August31AQI (US)
202137AQI (US)
Highest AQI (US) recorded in
January46AQI (US)
Lowest AQI (US) recorded in
August30AQI (US)
202035AQI (US)
Highest AQI (US) recorded in
December44AQI (US)
Lowest AQI (US) recorded in
May26AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Yokoshiba's annual 2026 AQI (US) (33) shows an average percentage change of -11.6% (improved AQI (US)) compared to previous years: 2020 (35), 2021 (37), 2022 (39), 2023 (38), 2024 (36), 2025 (38).