Yashiki, Kumamoto, Japan Historical Air Quality Analysis

Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

July Air Quality Analysis
Yashiki, Kumamoto, Japan

2024

2025

AQI

Days

Days	2025	2024
Jul. 1	68	21
Jul. 2	76	20
Jul. 3		23
Jul. 4		24
Jul. 5		23
Jul. 6		22
Jul. 7		22
Jul. 8		21
Jul. 9		19
Jul. 10		21
Jul. 11		24
Jul. 12		30
Jul. 13		23
Jul. 14		23
Jul. 15		18
Jul. 16		19
Jul. 17		29
Jul. 18		30
Jul. 19		26
Jul. 20		25
Jul. 21		23
Jul. 22		32
Jul. 23		40
Jul. 24		42
Jul. 25		36
Jul. 26		26
Jul. 27		31
Jul. 28		35
Jul. 29		33
Jul. 30		31
Jul. 31		32

AQI Trends: Highest and Lowest

Highest AQI recorded on

2nd Jul 2025

76AQI

Lowest AQI recorded on

15th Jul 2024

18AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 76 of Moderate air quality on the same day.

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Yashiki, Kumamoto, Japan

AQI

Day

Night

5 AM2nd Jul 2025

7 PM

4 AM3rd Jul 2025

Day time

Avg. Highest Time

6PM2nd Jul

139AQI

Avg. Lowest Time

7AM2nd Jul

52AQI

Night time

Avg. Highest Time

8PM2nd Jul

128AQI

Avg. Lowest Time

3AM3rd Jul

53AQI

In the last 24 hours,

Yashiki's AQI reached its highest point of 139 at 6 PM during the Day, while the lowest point, 52, was recorded at 7 AM during the Day between 2nd Jul and 3rd Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Yashiki, Kumamoto, Japan

JunJul

03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th - 19th19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 01st01st - 02nd02nd - 03rd03rd

Day

Night

19°C17/22°C

20°C15/26°C

21°C15/27°C

21°C16/27°C

22°C18/28°C

20°C18/22°C

19°C19/20°C

23°C22/24°C

22°C20/25°C

21°C20/23°C

24°C22/29°C

24°C22/27°C

23°C21/27°C

25°C22/29°C

24°C21/30°C

25°C22/29°C

26°C21/33°C

26°C23/32°C

27°C23/31°C

25°C22/30°C

23°C22/23°C

23°C22/26°C

26°C23/29°C

24°C23/27°C

25°C22/30°C

27°C23/32°C

28°C24/33°C

29°C24/34°C

5 AM

12 PM

7 PM

12 AM

4 AM

0°C0/0°C

Day time

Avg. Highest Time

5 AM - 7 PM

42AQI

15 hours / Day

450 hours / Month

Avg. Lowest Time

5 AM - 9 AM

38AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 5 AM to 7 PM (Avg. 42), while the lowest AQI was between 5 AM to 9 AM (Avg. 38).

Night time

Avg. Highest Time

8 PM - 11 PM

40AQI

4 hours / Day

120 hours / Month

Avg. Lowest Time

12 AM - 4 AM

38AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 8 PM to 11 PM (Avg. 40), while the lowest AQI was between 12 AM to 4 AM (Avg. 38).

2025 Days Vs Air Quality
Yashiki, Kumamoto, Japan

2025

74%

136

26%

Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)

Good

136 Days

Moderate

47 Days

Poor

0 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 74%

Health Risk Level:

Low

In 2025, 74% of 184 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
Yashiki, Kumamoto, Japan

AQI levels in 2025

AQI

PM2.5

PM10

SO2

NO2

Sun.Mon.Tue.Wed.Thu.Fri.Sat.

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

48AQI

40AQI

47AQI

46AQI

44AQI

37AQI

72AQI

No. of days

Jan.Feb.Mar.Apr.MayJun.Jul.Aug.Sep.Oct.Nov.Dec.Total Days

202544AQI

136

Highest AQI recorded in

July

72AQI

Lowest AQI recorded in

June

37AQI

202443AQI

173

Highest AQI recorded in

January

63AQI

Lowest AQI recorded in

July

27AQI

202342AQI

Highest AQI recorded in

November

49AQI

Lowest AQI recorded in

December

42AQI

202145AQI

Highest AQI recorded in

January

47AQI

Lowest AQI recorded in

February

42AQI

202049AQI

147

103

Highest AQI recorded in

August

60AQI

Lowest AQI recorded in

July

37AQI

Most & Least Polluted Years Over the Last 5 Years

Most Polluted Year Recorded

2020(Avg.)

49AQI

Least Polluted Year Recorded

2023(Avg.)

42AQI

Yashiki's annual 2025 AQI (44) shows an average percentage change of -1.8% (improved AQI) compared to previous years: 2020 (49), 2021 (45), 2023 (42), 2024 (43).


5 AM	52
6 AM	53
7 AM	52
8 AM	53
9 AM	102
10 AM	119
11 AM	121
12 PM	135
1 PM	129
2 PM	126
3 PM	131
4 PM	124
5 PM	130
6 PM	139
7 PM	137
8 PM	128
9 PM	125
10 PM	125
11 PM	125
12 AM	125
1 AM	125
2 AM	71
3 AM	53
4 AM	54

Yashiki, Kumamoto, Japan Historical Air Quality Analysis

July Air Quality AnalysisYashiki, Kumamoto, Japan

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025Yashiki, Kumamoto, Japan

Day & Night AQI Trend : Jun - Jul 2025Yashiki, Kumamoto, Japan

2025 Days Vs Air Quality Yashiki, Kumamoto, Japan

Annual Air Quality InsightsYashiki, Kumamoto, Japan

AQI levels in 2025

No. of days

July Air Quality Analysis
Yashiki, Kumamoto, Japan

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Yashiki, Kumamoto, Japan

Day & Night AQI Trend : Jun - Jul 2025
Yashiki, Kumamoto, Japan

2025 Days Vs Air Quality
Yashiki, Kumamoto, Japan

Annual Air Quality Insights
Yashiki, Kumamoto, Japan