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  • Japan
  • Oita
  • Hiji
Hiji
AQIHistoryPM2.5PM10COSO2NO2O3
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Live

Hiji Air Quality Index (AQI) | Air Pollution

Real-time PM2.5, PM10 air pollution level in Oita

Last Updated: 2025-07-17 07:54:05 AM (Local Time)

location image
Live AQI
53
Air Quality is
Moderate
pm10 :  22 µg/m³
PM2.5 :  10 µg/m³
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+
aqi moderate level.webp in Hiji
partly cloudy

26 °C

Partly Cloudy
Humidity
Humidity94 %

Wind Speed
Wind Speed4 km/h

UV Index
UV Index1
Last Updated: 2025-07-17 07:54:05 AM (Local Time)
AQI LogoMap

Hiji

Major Air Pollutants

Hiji

PM2.5's Icon

Particulate Matter(PM2.5)

10µg/m³

PM10's Icon

Particulate Matter(PM10)

22µg/m³

CO's Icon

Carbon Monoxide(CO)

87ppb

SO2's Icon

Sulfur Dioxide(SO2)

3ppb

NO2's Icon

Nitrogen Dioxide(NO2)

4ppb

O3's Icon

Ozone(O3)

26ppb

Trending in Japan

Is Poor Air Quality in Gyms Holding Back Your Fitness Goals?

Is Poor Air Quality in Gyms Holding Back Your Fitness Goals?

Why You Should Be Monitoring Air Quality During Monsoon — Not Just in Winter?

Why You Should Be Monitoring Air Quality During Monsoon — Not Just in Winter?

Air Pollution and Lung Cancer: How Toxic Air is Mutating Your DNA?

Air Pollution and Lung Cancer: How Toxic Air is Mutating Your DNA?

City Climate Change Severity Analysis is NOW LIVE on AQI.in!📢

City Climate Change Severity Analysis is NOW LIVE on AQI.in!📢

AQI Graph

Historical Air Quality Data

Hiji

24 Hours
AQI
Hiji
AQI
.
16-07-2025Time17-07-2025
TimeHiji
08 AM52
09 AM30
10 AM38
11 AM56
12 PM53
01 PM54
02 PM64
03 PM74
04 PM72
05 PM62
06 PM50
07 PM47
08 PM54
09 PM53
10 PM51
11 PM52
12 AM50
01 AM49
02 AM52
03 AM52
04 AM52
05 AM52
06 AM53
07 AM53
30
Min.at 9:09 AM on 16th Jul
74
Max.at 3:09 PM on 16th Jul

Want air quality data?

AQI Logo

Download 2024 Annual Data

World Air Quality Report

Globe

AQI Trends - Annual Air Quality Changes

Hiji, Oita, Japan

AQI
Year
.
AQI
AQI AQI
Mar 202035
Apr 202034
May 202038
Jun 202040
Jul 202029
Aug 202052
Sep 202025
Oct 202029
Nov 202031
Dec 202029
Jan 202130
Feb 202136
Mar 202134
Apr 202131
May 202140
Jun 202141
Jul 202132
Aug 202128
Sep 202135
Oct 202135
Nov 202138
Dec 202132
Jan 202233
Feb 202238
Mar 202243
Apr 202241
May 202248
Jun 202239
Jul 202237
Aug 202235
Sep 202235
Oct 202235
Nov 202239
Dec 202233
Jan 202338
Feb 202337
Mar 202343
Apr 202347
May 202343
Jun 202343
Jul 202337
Aug 202329
Sep 202337
Oct 202342
Nov 202341
Dec 202337
Jan 202436
Feb 202434
Mar 202438
Apr 202444
May 202442
Jun 202437
Jul 202433
Aug 202437
Sep 202435
Oct 202433
Nov 202436
Dec 202432
Jan 202541
Feb 202537
Mar 202547
Apr 202543
May 202540
Jun 202545
Jul 202566


Annual AQI Trends

2020
34AQI
2021
34AQI
0%
No Change
2022
38AQI
12%
Rise
2023
40AQI
5%
Rise
2024
36AQI
-10%
Fall
2025
44AQI
22%
Rise
Overall Annual Percentage (%) change of AQI in (2020 to 2025)
6%
Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedJuly, 202566AQI

Least PollutedSeptember, 202025AQI

* This data analysis is from year 2020 - 2025

Hiji's Locations

Real-time Air Pollution Level

Location
Status
AQI
PM2.5(µg/m³)
PM10(µg/m³)
Temp.(°C)
Humi.(%)
Hayami District
Moderate
53
10
22
28
76

Japan's Metro Cities

Air Quality Index

Aomori City AQI

Aomori

44

temp.27°C

hum.79%
Higashi Hiroshima City AQI

Higashi Hiroshima

55

temp.26°C

hum.79%
Higashi Osaka City AQI

Higashi Osaka

56

temp.25°C

hum.89%
Kyoto City AQI

Kyoto

56

temp.25°C

hum.89%
Saitama City AQI

Saitama

50

temp.25°C

hum.89%
Sendai City AQI

Sendai

49

temp.25°C

hum.89%
Tokyo City AQI

Tokyo

51

temp.27°C

hum.89%
Yokohama City AQI

Yokohama

52

temp.27°C

hum.89%

Air Quality Calendar 2025

Hiji

2025
AQI
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
29 Dec
-
30 Dec
-
31 Dec
-
1 Jan
32
2 Jan
34
3 Jan
33
4 Jan
31
5 Jan
34
6 Jan
41
7 Jan
32
8 Jan
38
9 Jan
28
10 Jan
31
11 Jan
29
12 Jan
35
13 Jan
40
14 Jan
40
15 Jan
42
16 Jan
36
17 Jan
41
18 Jan
37
19 Jan
41
20 Jan
41
21 Jan
59
22 Jan
65
23 Jan
74
24 Jan
73
25 Jan
46
26 Jan
45
27 Jan
35
28 Jan
37
29 Jan
32
30 Jan
34
31 Jan
42
1 Feb
49
February
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
26 Jan
45
27 Jan
35
28 Jan
37
29 Jan
32
30 Jan
34
31 Jan
42
1 Feb
49
2 Feb
35
3 Feb
44
4 Feb
31
5 Feb
36
6 Feb
30
7 Feb
32
8 Feb
30
9 Feb
29
10 Feb
31
11 Feb
36
12 Feb
31
13 Feb
31
14 Feb
36
15 Feb
32
16 Feb
39
17 Feb
38
18 Feb
35
19 Feb
35
20 Feb
33
21 Feb
34
22 Feb
36
23 Feb
36
24 Feb
35
25 Feb
36
26 Feb
43
27 Feb
62
28 Feb
55
1 Mar
81
March
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
23 Feb
36
24 Feb
35
25 Feb
36
26 Feb
43
27 Feb
62
28 Feb
55
1 Mar
81
2 Mar
68
3 Mar
48
4 Mar
39
5 Mar
35
6 Mar
37
7 Mar
33
8 Mar
39
9 Mar
40
10 Mar
44
11 Mar
44
12 Mar
47
13 Mar
51
14 Mar
36
15 Mar
35
16 Mar
23
17 Mar
41
18 Mar
34
19 Mar
37
20 Mar
43
21 Mar
52
22 Mar
56
23 Mar
59
24 Mar
51
25 Mar
70
26 Mar
66
27 Mar
61
28 Mar
60
29 Mar
52
30 Mar
41
31 Mar
34
1 Apr
39
2 Apr
35
3 Apr
31
4 Apr
31
5 Apr
41
April
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
30 Mar
41
31 Mar
34
1 Apr
39
2 Apr
35
3 Apr
31
4 Apr
31
5 Apr
41
6 Apr
41
7 Apr
37
8 Apr
34
9 Apr
52
10 Apr
50
11 Apr
52
12 Apr
53
13 Apr
43
14 Apr
48
15 Apr
29
16 Apr
42
17 Apr
43
18 Apr
53
19 Apr
54
20 Apr
45
21 Apr
44
22 Apr
36
23 Apr
28
24 Apr
37
25 Apr
53
26 Apr
46
27 Apr
55
28 Apr
41
29 Apr
46
30 Apr
47
1 May
46
2 May
38
3 May
41
May
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
27 Apr
55
28 Apr
41
29 Apr
46
30 Apr
47
1 May
46
2 May
38
3 May
41
4 May
36
5 May
37
6 May
31
7 May
31
8 May
36
9 May
30
10 May
34
11 May
33
12 May
48
13 May
53
14 May
57
15 May
55
16 May
51
17 May
38
18 May
48
19 May
54
20 May
57
21 May
37
22 May
44
23 May
40
24 May
32
25 May
29
26 May
31
27 May
36
28 May
42
29 May
38
30 May
35
31 May
37
June
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1 Jun
45
2 Jun
49
3 Jun
29
4 Jun
41
5 Jun
35
6 Jun
54
7 Jun
55
8 Jun
61
9 Jun
37
10 Jun
35
11 Jun
46
12 Jun
44
13 Jun
43
14 Jun
34
15 Jun
32
16 Jun
29
17 Jun
37
18 Jun
39
19 Jun
42
20 Jun
50
21 Jun
55
22 Jun
69
23 Jun
45
24 Jun
45
25 Jun
46
26 Jun
46
27 Jun
52
28 Jun
48
29 Jun
48
30 Jun
54
1 Jul
58
2 Jul
73
3 Jul
89
4 Jul
94
5 Jul
90
July
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
29 Jun
48
30 Jun
54
1 Jul
58
2 Jul
73
3 Jul
89
4 Jul
94
5 Jul
90
6 Jul
70
7 Jul
61
8 Jul
68
9 Jul
75
10 Jul
76
11 Jul
49
12 Jul
49
13 Jul
41
14 Jul
39
15 Jul
51
16 Jul
-
17 Jul
-
18 Jul
-
19 Jul
-
20 Jul
-
21 Jul
-
22 Jul
-
23 Jul
-
24 Jul
-
25 Jul
-
26 Jul
-
27 Jul
-
28 Jul
-
29 Jul
-
30 Jul
-
31 Jul
-
1 Aug
-
2 Aug
-
Good
050
Moderate
100
Poor
150
Unhealthy
200
Severe
300
Hazardous
301+

Health Advice For People Living In

Hiji

0Cigarettes per day

Weekly 0 Cigarettes
Monthly 0 Cigarettes

Breathe easy and get active! The air quality is perfect for enjoying outdoor activities.

Source:

Berkeley Earth


Solutions for Current AQI

  • Air Purifier
    Air PurifierTurn On
  • Car Filter
    Car FilterMust
  • N95 Mask
    N95 MaskMust
  • Stay Indoor
    Stay IndoorMust


Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Hiji

  • asthma due to air pollution in HijiAsthma
  • heart due to air pollution in HijiHeart Issues
  • allergy due to air pollution in HijiAllergies
  • sinus due to air pollution in HijiSinus
  • flu due to air pollution in HijiCold/Flu
  • copd due to air pollution in HijiChronic (COPD)
asthma due to air pollution in Hiji

Mid. Chances of Asthma

Asthma

Risk of Asthma symptoms is Mid. when AQI is Moderate (50-150)

Moderate symptoms including frequent wheezing, noticeable shortness of breath, chest tightness, and persistent cough.

Do's :

  • Limit outdoor activities when AQI is poor.

  • Clean indoor air with an air purifier to reduce exposure.

  • Soothe the respiratory tract with herbal teas or warm water to help alleviate symptoms.

Don'ts :

  • Exercise outdoors without a mask.

  • Stay in smoky areas with strong fumes.

Most Polluted Cities 2025

Japan

Analyze the real-time most air polluted cities in the country.

Most Polluted Cities Live Ranking 2025
World's Most PollutedCity Rankings (2024)
World's Most PollutedCountry Rankings(2024)
RankCityAQIAQI Status

Standard Value

Follow

1.

Imabari, Japan

58
Moderate
4xabove Standard

2.

Aioi, Japan

58
Moderate
4xabove Standard

3.

Tokushima, Japan

57
Moderate
4xabove Standard

4.

Okayama, Japan

57
Moderate
4xabove Standard

5.

Matsuyama, Japan

57
Moderate
4xabove Standard

6.

Komatsushimacho, Japan

57
Moderate
4xabove Standard

7.

Narutocho Mitsuishi, Japan

57
Moderate
4xabove Standard

8.

Saijo, Japan

57
Moderate
4xabove Standard

9.

Kariya, Japan

57
Moderate
4xabove Standard

10.

Yamazaki, Japan

57
Moderate
4xabove Standard

Last Updated: 16 Jul 2025, 10:58 PM

AQI City Rankings

Air Quality Solutions For Hiji

Explore the solutions of air quality monitoring & clean air.

Here are some applications that you can go through to find out the solutions.

Air Quality Monitor

Air Quality Monitor

Monitor the air quality
Air Quality Sensors

Air Quality Sensors

Sensors to measure the air quality
Fresh Air Machine

Fresh Air Machine

Clean the air you breathe
Car Cabin Filter

Car Cabin Filter

Purify the air in your car
N95 Mask

N95 Mask

Shield yourself from pollution
air quality solutions for offices for Hiji

Air Quality Solution For Offices

A complete solution for air quality monitoring, data analysis, and fresh air solutions in workplaces prioritizing employee's health and productivity.

air quality solutions for smart-city for Hiji

Air Quality Solutions For Smart City

Prana Air smart city project provides air quality monitors, drones, outdoor air purifiers, and data dashboards solution to improve air quality.

air quality solutions for institutes for Hiji

Air Quality Solutions for Schools | Institutes

Prana Air provides the air quality solutions for schools by air monitoring & fresh air machine that help the students to breather clean air.

air quality solutions for hotels for Hiji

Air Quality Solutions For Hotels

Prana Air air quality solutions are suited for hotel businesses. The occupancy of hotels is the main reasons for bad air quality.

air quality solutions for restaurants for Hiji

Air Quality Solutions for Restaurants

Prana Air has the air quality solutions for restaurant, cafes, and gives you the power to know what your customers and staff breathe.

air quality solutions for rmc-plants for Hiji

Air Quality Solutions for RMC Plants

Prana Air provides air quality monitoring solutions for RMC plants. Improve compliance, protect workers and community, and reduce emissions.

air quality solutions for fitness-center for Hiji

Air Quality Solutions for Fitness Center

Prana Air provides the air quality solutions of pollution monitoring and fresh air for fitness center - gym.

air quality solutions for parking-lot for Hiji

Air Quality Solutions for Parking Lot

A complete solution for air monitoring, data analysis, and fresh air solutions for enclosed car parking areas and car lots.

air quality solutions for retail-stores for Hiji

Air Quality Solutions for Retail Stores

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets.

air quality solutions for airport for Hiji

Prana Air provides air quality solutions of pollution monitoring and fresh air for retail stores and shopping outlets

Prana Air provides the air quality solutions for airport. Gathering of many passengers is the main reasons of bad air quality in airport.

air quality solutions for construction-sites for Hiji

Air Quality Solutions For Construction Sites

Prana Air offers air quality monitoring solutions for construction sites with data cloud storage, web-dashboard, mobile apps, TV display.

air quality solutions for hospitals for Hiji

Air Quality Solutions For Hospitals

Prana Air provides air quality monitoring and fresh air solutions for hospitals to ensure clean and healthy indoor air.

air quality solutions for bathroom for Hiji

Air Quality Solutions For Washroom | Bathroom

Improve washroom and bathroom air quality with Prana Air air quality monitoring devices and fresh air machine. Breathe easy and stay healthy.

air quality solutions for banks for Hiji

Air Quality Solutions for Banks

Prana Air provides air quality solutions of pollution monitoring and fresh air for banks and financial institutions.

air quality solutions for cinema for Hiji

Air Quality Solutions for Cinema

Air quality solutions for cinema halls or theatres will help the customers to get the good experience, comfort and breathe clean air.

air quality solutions for real-estates for Hiji

Air Quality Solutions For Real Estates

Prana Air provides the air quality solutions of pollution monitoring and fresh air for real estates - residential and commercial.

Hiji's AQI Data Analytics Solutions

Air quality data monitoring platforms

Mobile AppMobile App
Smart TV AppSmart TV App
Web DashboardWeb Dashboard
APIAPI
WidgetsWidgets
aqi air quality app for Hiji
Mobile App

Empower Your Decisions with Reliable Data

Get it onApp Store
Get it onGoogle Play
Your area’s real-time data with detailed parameters.

Your area’s real-time data with detailed parameters.


Personalized health advice as per current AQI.

Personalized health advice as per current AQI.


Analytical data to identify trends and conditions.

Analytical data to identify trends and conditions.


Connect and control your air quality devices.

Connect and control your air quality devices.


Air Quality FAQs

at Hiji

Frequently Asked Questions About Air Quality

What is the current AQI level in Hiji?

The current real-time AQI level in Hiji is 53 (Moderate). This was last updated 2025-07-17 07:54:05 AM (Local Time).

When was the best AQI level in Hiji in the last 24 hours?

The best AQI level was 30 (Good) at 9:09 AM (Local Time) during the last 24 hours.

When was the worst AQI level in Hiji in the last 24 hours?

The worst AQI level was 74 (Moderate) at 3:09 PM (Local Time) during the last 24 hours.

What is the current trend of AQI levels in Hiji during last 24 hours?

The AQI levels in Hiji have been fluctuating throughout the last 24 hours. The levels have increased by highest 74 at 3:09 PM (Local Time), lowest 30 at 9:09 AM (Local Time).

What actions are recommended as per the current AQI level in Hiji?

Current AQI levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.

Recent AQI Blogs

Read the latest news

Here are some latest blogs that you can go through to find out more air pollution.

Do People Really Consider Air Pollution Before Moving to Delhi NCR?

Do People Really Consider Air Pollution Before Moving to Delhi NCR?

15 Jul 2025Shakshi
Is Poor Air Quality in Gyms Holding Back Your Fitness Goals?

Is Poor Air Quality in Gyms Holding Back Your Fitness Goals?

12 Jul 2025Shakshi
Air Pollution and Lung Cancer: How Toxic Air is Mutating Your DNA?

Air Pollution and Lung Cancer: How Toxic Air is Mutating Your DNA?

7 Jul 2025Shakshi
Can Banning Old Vehicles Really Improve Delhi’s Air Quality? Here’s What the Data Says

Can Banning Old Vehicles Really Improve Delhi’s Air Quality? Here’s What the Data Says

4 Jul 2025Gyane Haobijam
Arizona Dust Storm 2025: How the Sudden Storm Pushed AQI to Hazardous Levels?

Arizona Dust Storm 2025: How the Sudden Storm Pushed AQI to Hazardous Levels?

2 Jul 2025Shakshi
Air Pollution Comparison Between England vs India: What a 45% Asthma Spike in the UK Reveals

Air Pollution Comparison Between England vs India: What a 45% Asthma Spike in the UK Reveals

1 Jul 2025Shakshi
Urban Heat Islands in India: The 2024 Climate Crisis in Metro Cities

Urban Heat Islands in India: The 2024 Climate Crisis in Metro Cities

24 Jun 2025Shakshi
Delhi AQI Drops After Months: How Rain Provided Temporary Relief in Pollution Levels 

Delhi AQI Drops After Months: How Rain Provided Temporary Relief in Pollution Levels 

19 Jun 2025Shakshi
AQI.IN Launched First Ever City-Level Climate Change Severity Index -June 2025

AQI.IN Launched First Ever City-Level Climate Change Severity Index -June 2025

19 Jun 2025Gyane Haobijam
Noise Pollution in Ocean: The Silent Threat Beneath the Waves

Noise Pollution in Ocean: The Silent Threat Beneath the Waves

17 Jun 2025Shakshi
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Prana Sense

Air Quality Monitor

Air Quality Index depicts the extent of air pollution at a particular location.

Prana Sense Air Quality MonitorPrana Sense Air Quality Monitor
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Pocket PM

Air Quality Monitor

Know the air quality around you wherever you are with the Pocket monitor to get instant air quality insights.

Pocket PM Air Quality MonitorPocket PM Air Quality Monitor
Prana Air Logo

Cair +

Indoor Air Quality Monitor

Track indoor air quality with advanced connectivity and portability for real-time air quality data.

Cair + Indoor Air Quality MonitorCair + Indoor Air Quality Monitor