Nishishinsaimachi, Tsuruoka, Yamagata, 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
Nishishinsaimachi, Tsuruoka, Yamagata, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (6th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 39 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Nishishinsaimachi, Tsuruoka, Yamagata, Japan
4 AM7th Aug 2025
7 PM
3 AM8th Aug 2025
AQI
AQI
42AQI
20AQI
In the last 24 hours,
Nishishinsaimachi's AQI reached its highest point of 42 at 4 AM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Nishishinsaimachi, Tsuruoka, Yamagata, Japan
24°C21/27°C
23°C20/26°C
22°C18/27°C
21°C18/25°C
22°C18/26°C
25°C21/30°C
25°C24/29°C
27°C24/32°C
26°C24/28°C
26°C23/30°C
26°C24/30°C
26°C23/30°C
26°C22/29°C
26°C24/29°C
26°C24/29°C
26°C23/29°C
26°C23/29°C
26°C23/29°C
27°C24/29°C
26°C24/29°C
26°C23/30°C
27°C23/31°C
28°C23/34°C
27°C22/34°C
27°C25/29°C
27°C24/30°C
28°C25/30°C
27°C25/29°C
25°C24/27°C
--°C/°C
--°C/°C
46AQI
39AQI
46AQI
41AQI
2025 Days Vs Air Quality
Nishishinsaimachi, Tsuruoka, Yamagata, Japan
93%
202
7%
16
Total number of days with different AQI categories in last 219 days in 2025 (146 days remaining)
Under WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% of 219 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
Nishishinsaimachi, Tsuruoka, Yamagata, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
25AQI
27AQI
31AQI
29AQI
26AQI
31AQI
28AQI
28AQI
29AQI
27AQI
26AQI
29AQI
34AQI
29AQI
28AQI
26AQI
28AQI
34AQI
35AQI
39AQI
33AQI
34AQI
36AQI
28AQI
28AQI
24AQI
29AQI
29AQI
31AQI
32AQI
31AQI
28AQI
29AQI
31AQI
30AQI
32AQI
32AQI
31AQI
31AQI
31AQI
33AQI
30AQI
33AQI
31AQI
31AQI
32AQI
45AQI
31AQI
37AQI
31AQI
32AQI
32AQI
33AQI
32AQI
35AQI
45AQI
35AQI
51AQI
48AQI
55AQI
38AQI
39AQI
31AQI
31AQI
33AQI
34AQI
32AQI
37AQI
38AQI
38AQI
48AQI
36AQI
37AQI
22AQI
23AQI
24AQI
21AQI
29AQI
48AQI
54AQI
37AQI
43AQI
52AQI
37AQI
45AQI
35AQI
30AQI
26AQI
26AQI
24AQI
22AQI
22AQI
22AQI
24AQI
24AQI
24AQI
27AQI
25AQI
28AQI
27AQI
29AQI
22AQI
20AQI
21AQI
23AQI
29AQI
33AQI
41AQI
30AQI
29AQI
27AQI
27AQI
23AQI
24AQI
34AQI
31AQI
32AQI
25AQI
24AQI
24AQI
22AQI
26AQI
27AQI
27AQI
25AQI
24AQI
26AQI
28AQI
24AQI
26AQI
26AQI
33AQI
31AQI
36AQI
39AQI
31AQI
35AQI
32AQI
44AQI
45AQI
37AQI
35AQI
32AQI
26AQI
27AQI
27AQI
29AQI
28AQI
28AQI
22AQI
24AQI
29AQI
30AQI
29AQI
29AQI
31AQI
37AQI
43AQI
45AQI
44AQI
40AQI
35AQI
34AQI
30AQI
26AQI
29AQI
31AQI
38AQI
42AQI
48AQI
51AQI
61AQI
50AQI
46AQI
48AQI
42AQI
51AQI
41AQI
42AQI
47AQI
50AQI
54AQI
60AQI
65AQI
62AQI
59AQI
59AQI
57AQI
55AQI
52AQI
48AQI
46AQI
48AQI
43AQI
42AQI
46AQI
42AQI
41AQI
42AQI
43AQI
40AQI
40AQI
41AQI
44AQI
44AQI
46AQI
47AQI
42AQI
41AQI
45AQI
43AQI
34AQI
35AQI
38AQI
45AQI
44AQI
39AQI
30AQI
33AQI
36AQI
26AQI
30AQI
39AQI
48AQI
39AQI
No. of days
202535AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
April26AQI
202434AQI
Highest AQI recorded in
June43AQI
Lowest AQI recorded in
January19AQI
202320AQI
Highest AQI recorded in
November21AQI
Lowest AQI recorded in
December20AQI
202017AQI
Highest AQI recorded in
September17AQI
Lowest AQI recorded in
September17AQI
Most & Least Polluted Years Over the Last 4 Years
Nishishinsaimachi's annual 2025 AQI (35) shows an average percentage change of 61.7% (worsened AQI) compared to previous years: 2020 (17), 2023 (20), 2024 (34).