Kanonjicho, Kagawa, 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+

September Air Quality Analysis
Kanonjicho, Kagawa, Japan

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Sep. 1	39	39	35		68
Sep. 2	34	49	37	33	52
Sep. 3	39	61	52	31	27
Sep. 4	27	52	57	32	35
Sep. 5	22	54	38	27	43
Sep. 6	28	59	33	30	51
Sep. 7	31	61	34	42	40
Sep. 8	31	70	41	36	37
Sep. 9	32	66	48	38	39
Sep. 10	32	30	42	30	57
Sep. 11	29	26	30	48	55
Sep. 12	28	33	40	52	54
Sep. 13	31	47	36	44	53
Sep. 14	30	27	42	53	35
Sep. 15	37	15	48	47	28
Sep. 16	41	27	49	40	39
Sep. 17		38	56	36	29
Sep. 18		34	41	39	29
Sep. 19		38	52	28	31
Sep. 20		31	70	31	36
Sep. 21		23	50	36	43
Sep. 22		24	35	43	45
Sep. 23		25	31	43	58
Sep. 24		28	34	57	50
Sep. 25		38	42	53	41
Sep. 26		46	47	62	47
Sep. 27		49	52	54	44
Sep. 28		36	53	44	34
Sep. 29		37	48	40	35
Sep. 30		42	58	47	37

AQI Trends: Highest and Lowest

Highest AQI recorded on

20th Sep 2023

70AQI

Lowest AQI recorded on

15th Sep 2024

15AQI

Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 41 of Good air quality, showing improvement over 2023 on the same day.

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Kanonjicho, Kagawa, Japan

AQI

Day

Night

5 AM17th Sep 2025

6 PM

4 AM18th Sep 2025

Day time

Avg. Highest Time

2PM17th Sep

64AQI

Avg. Lowest Time

8AM17th Sep

36AQI

Night time

Avg. Highest Time

7PM17th Sep

50AQI

Avg. Lowest Time

1AM18th Sep

32AQI

In the last 24 hours,

Kanonjicho's AQI reached its highest point of 64 at 2 PM during the Day, while the lowest point, 32, was recorded at 1 AM during the Night between 17th Sep and 18th Sep 2025.

Day & Night AQI Trend : Aug - Sep 2025
Kanonjicho, Kagawa, Japan

AugSep

19th - 20th20th - 21st21st - 22nd22nd - 23rd23rd - 24th24th - 25th25th - 26th26th - 27th27th - 28th28th - 29th29th - 30th30th - 31st31st - 01st01st - 02nd02nd - 03rd03rd - 04th04th - 05th05th - 06th06th - 07th07th - 08th08th - 09th09th - 10th10th - 11th11th - 12th12th - 13th13th - 14th14th - 15th15th - 16th16th - 17th17th - 18th18th

Day

Night

27°C23/31°C

27°C24/30°C

27°C23/31°C

27°C24/31°C

27°C25/31°C

27°C24/30°C

27°C23/30°C

26°C23/30°C

27°C25/30°C

27°C23/31°C

28°C24/31°C

27°C24/32°C

27°C23/32°C

27°C23/30°C

24°C23/26°C

26°C23/30°C

26°C23/29°C

27°C24/30°C

27°C25/30°C

27°C24/30°C

24°C22/27°C

25°C22/30°C

26°C23/30°C

27°C24/30°C

27°C25/30°C

27°C24/30°C

5 AM

11 AM

6 PM

11 PM

4 AM

--°C/°C

Day time

Avg. Highest Time

12 PM - 6 PM

41AQI

7 hours / Day

210 hours / Month

Avg. Lowest Time

9 AM

34AQI

1 hours / Day

30 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 12 PM to 6 PM (Avg. 41), while the lowest AQI was between 9 AM to 9 AM (Avg. 34).

Night time

Avg. Highest Time

7 PM

42AQI

1 hours / Day

30 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 7 PM to 7 PM (Avg. 42), while the lowest AQI was between 12 AM to 4 AM (Avg. 38).

2025 Days Vs Air Quality
Kanonjicho, Kagawa, Japan

2025

66%

170

34%

0.3%

Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)

Good

170 Days

Moderate

88 Days

Poor

1 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 66%

Health Risk Level:

Moderate

In 2025, 66% of 261 days were within WHO’s safe air quality limits, and 34% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.

Annual Air Quality Insights
Kanonjicho, Kagawa, 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.

41AQI

42AQI

54AQI

51AQI

47AQI

52AQI

54AQI

46AQI

32AQI

No. of days

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

202547AQI

170

Highest AQI recorded in

March

54AQI

Lowest AQI recorded in

September

32AQI

202444AQI

264

101

Highest AQI recorded in

April

59AQI

Lowest AQI recorded in

December

32AQI

202347AQI

246

118

Highest AQI recorded in

March

56AQI

Lowest AQI recorded in

August

37AQI

202247AQI

202

116

Highest AQI recorded in

August

61AQI

Lowest AQI recorded in

December

38AQI

202144AQI

255

Highest AQI recorded in

June

53AQI

Lowest AQI recorded in

January

38AQI

202044AQI

183

Highest AQI recorded in

August

59AQI

Lowest AQI recorded in

September

36AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2025(Avg.)

47AQI

Least Polluted Year Recorded

2021(Avg.)

44AQI

Kanonjicho's annual 2025 AQI (47) shows an average percentage change of 5.8% (worsened AQI) compared to previous years: 2020 (44), 2021 (44), 2022 (47), 2023 (47), 2024 (44).


5 AM	36
6 AM	36
7 AM	36
8 AM	36
9 AM	49
10 AM	54
11 AM	58
12 PM	63
1 PM	62
2 PM	64
3 PM	56
4 PM	54
5 PM	55
6 PM	60
7 PM	50
8 PM	35
9 PM	37
10 PM	38
11 PM	35
12 AM	32
1 AM	32
2 AM	35
3 AM	35
4 AM	38

Kanonjicho, Kagawa, Japan Historical Air Quality Analysis

September Air Quality AnalysisKanonjicho, Kagawa, Japan

Day & Night AQI Trend: 17th Sep - 18th Sep 2025Kanonjicho, Kagawa, Japan

Day & Night AQI Trend : Aug - Sep 2025Kanonjicho, Kagawa, Japan

2025 Days Vs Air Quality Kanonjicho, Kagawa, Japan

Annual Air Quality InsightsKanonjicho, Kagawa, Japan

AQI levels in 2025

No. of days

September Air Quality Analysis
Kanonjicho, Kagawa, Japan

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Kanonjicho, Kagawa, Japan

Day & Night AQI Trend : Aug - Sep 2025
Kanonjicho, Kagawa, Japan

2025 Days Vs Air Quality
Kanonjicho, Kagawa, Japan

Annual Air Quality Insights
Kanonjicho, Kagawa, Japan