Sakurazawa, Yorii, Saitama, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
February Air Quality Analysis
Sakurazawa, Yorii, Saitama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (15th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 56 of Moderate air quality, showing improvement over 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Feb - 15th Feb 2026
Sakurazawa, Yorii, Saitama, Japan
6 AM14th Feb 2026
5 PM
5 AM15th Feb 2026
94AQI
39AQI
69AQI
46AQI
In the last 24 hours,
Sakurazawa's AQI reached its highest point of 94 at 10 AM during the Day, while the lowest point, 39, was recorded at 4 PM during the Day between 14th Feb and 15th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Sakurazawa, Yorii, Saitama, Japan
8°C3/13°C
6°C3/10°C
6°C1/10°C
4°C0/11°C
1°C-1/5°C
1°C-1/4°C
1°C-2/5°C
2°C-1/8°C
2°C-1/5°C
2°C-2/6°C
4°C0/8°C
3°C0/7°C
3°C-1/7°C
2°C-1/6°C
2°C-1/7°C
3°C-1/8°C
4°C0/8°C
4°C0/9°C
4°C0/9°C
6°C2/11°C
7°C3/14°C
2°C0/3°C
-1°C-4/2°C
-1°C-7/6°C
3°C-1/8°C
5°C1/9°C
5°C1/10°C
5°C1/10°C
7°C2/13°C
10°C5/16°C
51AQI
31AQI
50AQI
31AQI
2026 Days Vs Air Quality
Sakurazawa, Yorii, Saitama, Japan
96%
44
4%
2
Total number of days with different AQI categories in last 47 days in 2026 (318 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2026, 96% of 47 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
Sakurazawa, Yorii, Saitama, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI (US)
17AQI (US)
15AQI (US)
23AQI (US)
28AQI (US)
19AQI (US)
23AQI (US)
25AQI (US)
15AQI (US)
27AQI (US)
34AQI (US)
13AQI (US)
21AQI (US)
12AQI (US)
31AQI (US)
43AQI (US)
43AQI (US)
24AQI (US)
46AQI (US)
31AQI (US)
13AQI (US)
23AQI (US)
41AQI (US)
41AQI (US)
42AQI (US)
30AQI (US)
42AQI (US)
26AQI (US)
27AQI (US)
37AQI (US)
37AQI (US)
37AQI (US)
45AQI (US)
32AQI (US)
39AQI (US)
44AQI (US)
46AQI (US)
13AQI (US)
17AQI (US)
37AQI (US)
47AQI (US)
48AQI (US)
35AQI (US)
49AQI (US)
68AQI (US)
56AQI (US)
28AQI (US)
41AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
February41AQI (US)
Lowest AQI (US) recorded in
January28AQI (US)
202541AQI (US)
Highest AQI (US) recorded in
July51AQI (US)
Lowest AQI (US) recorded in
January34AQI (US)
202439AQI (US)
Highest AQI (US) recorded in
April56AQI (US)
Lowest AQI (US) recorded in
December30AQI (US)
202341AQI (US)
Highest AQI (US) recorded in
April53AQI (US)
Lowest AQI (US) recorded in
August31AQI (US)
202240AQI (US)
Highest AQI (US) recorded in
June49AQI (US)
Lowest AQI (US) recorded in
December30AQI (US)
202138AQI (US)
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
January32AQI (US)
202036AQI (US)
Highest AQI (US) recorded in
August52AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Sakurazawa's annual 2026 AQI (US) (32) shows an average percentage change of -17.9% (improved AQI (US)) compared to previous years: 2020 (36), 2021 (38), 2022 (40), 2023 (41), 2024 (39), 2025 (41).