Ozu, Ehime, 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
Ozu, Ehime, Japan

2021

2022

2023

2024

2025

AQI

Days

Days	2025	2024	2023	2022	2021
Jul. 1	56	23	43	45	42
Jul. 2	63	28	55	55	63
Jul. 3		52	52	40	63
Jul. 4		34	63	25	67
Jul. 5		40	50	42	53
Jul. 6		49	69	41	55
Jul. 7		35	52	63	32
Jul. 8		36	51	58	35
Jul. 9		28	52	54	67
Jul. 10		36	55	70
Jul. 11		31	52	60
Jul. 12		51	42
Jul. 13		47	42	32
Jul. 14		40	53	38
Jul. 15		28	53	51
Jul. 16		27	41	47	37
Jul. 17		37	47	59	39
Jul. 18		25	40	64	17
Jul. 19		48	37	39	34
Jul. 20		44	47	55	51
Jul. 21		62	62	95	59
Jul. 22		51	51	42	51
Jul. 23		20	45	38	49
Jul. 24		20	49	38	50
Jul. 25		24	42		44
Jul. 26		18	66		41
Jul. 27		18	61		46
Jul. 28		32	71		65
Jul. 29		35	65		65
Jul. 30		24	47		62
Jul. 31		26	46		46

AQI Trends: Highest and Lowest

Highest AQI recorded on

21st Jul 2022

95AQI

Lowest AQI recorded on

18th Jul 2021

17AQI

Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 63 of Moderate air quality, showing improvement over 2021 on the same day.

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025
Ozu, Ehime, Japan

AQI

Day

Night

5 AM3rd Jul 2025

7 PM

4 AM4th Jul 2025

Day time

Avg. Highest Time

12AMNaNth undefined

AQI

Avg. Lowest Time

12AMNaNth undefined

AQI

Night time

Avg. Highest Time

6PM3rd Jul

119AQI

Avg. Lowest Time

8AM3rd Jul

53AQI

In the last 24 hours,

Ozu's AQI reached its highest point of 119 at 6 PM during the Night, while the lowest point, 53, was recorded at 8 AM during the Night between 3rd Jul and 4th Jul 2025.

Day & Night AQI Trend : Jun - Jul 2025
Ozu, Ehime, Japan

JunJul

04th - 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 - 04th04th

Day

Night

19°C15/24°C

19°C14/24°C

20°C15/24°C

20°C18/23°C

20°C18/22°C

19°C18/19°C

21°C17/23°C

21°C19/23°C

19°C15/20°C

21°C17/25°C

23°C19/25°C

24°C22/28°C

25°C22/30°C

24°C21/29°C

23°C19/27°C

23°C18/28°C

24°C18/30°C

24°C20/29°C

25°C20/29°C

22°C19/24°C

21°C19/23°C

23°C20/27°C

22°C21/24°C

23°C19/27°C

22°C18/26°C

24°C19/28°C

24°C20/29°C

24°C21/30°C

25°C20/30°C

0°C0/0°C

5 AM

12 PM

7 PM

12 AM

4 AM

0°C0/0°C

Day time

Avg. Highest Time

10 AM - 7 PM

48AQI

10 hours / Day

300 hours / Month

Avg. Lowest Time

5 AM - 9 AM

44AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 10 AM to 7 PM (Avg. 48), while the lowest AQI was between 5 AM to 9 AM (Avg. 44).

Night time

Avg. Highest Time

8 PM

49AQI

1 hours / Day

30 hours / Month

Avg. Lowest Time

12 AM - 4 AM

45AQI

5 hours / Day

150 hours / Month

In the last 30 days, during the daytime, the highest AQI was between 8 PM to 8 PM (Avg. 49), while the lowest AQI was between 12 AM to 4 AM (Avg. 45).

2025 Days Vs Air Quality
Ozu, Ehime, Japan

2025

69%

126

31%

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

Good

126 Days

Moderate

57 Days

Poor

0 Days

Unhealthy

0 Days

Severe

0 Days

Hazardous

0 Days

Under WHO’s Safe Air Quality Limits: 69%

Health Risk Level:

Moderate

In 2025, 69% of 184 days were within WHO’s safe air quality limits, and 31% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.

Annual Air Quality Insights
Ozu, Ehime, 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

52AQI

45AQI

44AQI

47AQI

60AQI

No. of days

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

202545AQI

126

Highest AQI recorded in

July

60AQI

Lowest AQI recorded in

January

41AQI

202441AQI

280

Highest AQI recorded in

April

56AQI

Lowest AQI recorded in

December

32AQI

202348AQI

232

130

Highest AQI recorded in

June

57AQI

Lowest AQI recorded in

February

41AQI

202247AQI

205

113

Highest AQI recorded in

May

59AQI

Lowest AQI recorded in

August

23AQI

202145AQI

248

100

Highest AQI recorded in

June

58AQI

Lowest AQI recorded in

January

37AQI

202040AQI

197

Highest AQI recorded in

August

57AQI

Lowest AQI recorded in

October

33AQI

Most & Least Polluted Years Over the Last 6 Years

Most Polluted Year Recorded

2023(Avg.)

48AQI

Least Polluted Year Recorded

2020(Avg.)

40AQI

Ozu's annual 2025 AQI (45) shows an average percentage change of 2.3% (worsened AQI) compared to previous years: 2020 (40), 2021 (45), 2022 (47), 2023 (48), 2024 (41).


5 AM	53
6 AM	53
7 AM	53
8 AM	53
9 AM	73
10 AM	95
11 AM	94
12 PM	94
1 PM	94
2 PM	94
3 PM	94
4 PM	94
5 PM	94
6 PM	119
7 PM	117
8 PM	100
9 PM	83
10 PM	84
11 PM	83
12 AM	80
1 AM	79
2 AM	71
3 AM	71
4 AM	72

Ozu, Ehime, Japan Historical Air Quality Analysis

July Air Quality AnalysisOzu, Ehime, Japan

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025Ozu, Ehime, Japan

Day & Night AQI Trend : Jun - Jul 2025Ozu, Ehime, Japan

2025 Days Vs Air Quality Ozu, Ehime, Japan

Annual Air Quality InsightsOzu, Ehime, Japan

AQI levels in 2025

No. of days

July Air Quality Analysis
Ozu, Ehime, Japan

Day & Night AQI Trend: 3rd Jul - 4th Jul 2025
Ozu, Ehime, Japan

Day & Night AQI Trend : Jun - Jul 2025
Ozu, Ehime, Japan

2025 Days Vs Air Quality
Ozu, Ehime, Japan

Annual Air Quality Insights
Ozu, Ehime, Japan