AQI PM2.5 PM10 CO SO2 NO2 O3

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Hirao Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-05-28 02:54:20 PM (Local Time)

Live AQI

Air Quality is

Moderate

pm10 : 18 µg/m³

PM2.5 : 10 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

24 °C

Last Updated: 2025-05-28 02:54:20 PM (Local Time)

Map

Hirao

Major Air Pollutants
Hirao

Particulate Matter(PM2.5)

10µg/m³

Particulate Matter(PM10)

18µg/m³

Carbon Monoxide(CO)

244ppb

Sulfur Dioxide(SO2)

3ppb

Nitrogen Dioxide(NO2)

9ppb

Ozone(O3)

43ppb

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AQI Graph

Historical Air Quality Data
Hirao

24 Hours

AQI

Hirao

Want air quality data?

AQI Trends - Annual Air Quality Changes
Hirao, Yamaguchi, Japan

AQI

Year

AQI

Annual AQI Trends

2020

32AQI

2021

35AQI

Rise

2022

38AQI

Rise

2023

38AQI

No Change

2024

36AQI

-5%

Fall

2025

43AQI

19%

Rise

Overall Annual Percentage (%) change of AQI in (2020 to 2025)

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedJune, 202149AQI

Least PollutedApril, 202125AQI

* This data analysis is from year 2020 - 2025

Hirao's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Minamimachi

Moderate

Japan's Metro Cities
Air Quality Index

Aomori

Higashi Hiroshima

Higashi Osaka

Kyoto

Saitama

Sendai

Tokyo

Yokohama

Air Quality Calendar 2025
Hirao

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 28	2 Jan 32	3 Jan 30	4 Jan 29
5 Jan 28	6 Jan 38	7 Jan 29	8 Jan 32	9 Jan 27	10 Jan 27	11 Jan 27
12 Jan 28	13 Jan 40	14 Jan 47	15 Jan 39	16 Jan 36	17 Jan 40	18 Jan 32
19 Jan 43	20 Jan 42	21 Jan 51	22 Jan 61	23 Jan 70	24 Jan 71	25 Jan 45
26 Jan 43	27 Jan 37	28 Jan 35	29 Jan 32	30 Jan 41	31 Jan 48	1 Feb 52

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 43	27 Jan 37	28 Jan 35	29 Jan 32	30 Jan 41	31 Jan 48	1 Feb 52
2 Feb 35	3 Feb 47	4 Feb 31	5 Feb 38	6 Feb 29	7 Feb 36	8 Feb 30
9 Feb 31	10 Feb 31	11 Feb 34	12 Feb 39	13 Feb 30	14 Feb 38	15 Feb 31
16 Feb 40	17 Feb 38	18 Feb 34	19 Feb 34	20 Feb 31	21 Feb 33	22 Feb 37
23 Feb 37	24 Feb 37	25 Feb 38	26 Feb 43	27 Feb 66	28 Feb 61	1 Mar 72

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 37	24 Feb 37	25 Feb 38	26 Feb 43	27 Feb 66	28 Feb 61	1 Mar 72
2 Mar 67	3 Mar 46	4 Mar 39	5 Mar 31	6 Mar 34	7 Mar 33	8 Mar 39
9 Mar 40	10 Mar 41	11 Mar 45	12 Mar 51	13 Mar 53	14 Mar 37	15 Mar 37
16 Mar 24	17 Mar 39	18 Mar 32	19 Mar 41	20 Mar 48	21 Mar 55	22 Mar 64
23 Mar 68	24 Mar 59	25 Mar 69	26 Mar 71	27 Mar 57	28 Mar 56	29 Mar 48
30 Mar 40	31 Mar 38	1 Apr 41	2 Apr 34	3 Apr 28	4 Apr 32	5 Apr 40

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 40	31 Mar 38	1 Apr 41	2 Apr 34	3 Apr 28	4 Apr 32	5 Apr 40
6 Apr 43	7 Apr 43	8 Apr 43	9 Apr 59	10 Apr 56	11 Apr 59	12 Apr 57
13 Apr 46	14 Apr 47	15 Apr 33	16 Apr 48	17 Apr 48	18 Apr 58	19 Apr 55
20 Apr 42	21 Apr 42	22 Apr 48	23 Apr 30	24 Apr 40	25 Apr 60	26 Apr 55
27 Apr 58	28 Apr 48	29 Apr 49	30 Apr 53	1 May 51	2 May 42	3 May 48

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 58	28 Apr 48	29 Apr 49	30 Apr 53	1 May 51	2 May 42	3 May 48
4 May 41	5 May 43	6 May 32	7 May 34	8 May 36	9 May 36	10 May 33
11 May 40	12 May 51	13 May 55	14 May 60	15 May 54	16 May 56	17 May 46
18 May 54	19 May 59	20 May 56	21 May 48	22 May 42	23 May 48	24 May 35
25 May 28	26 May 34	27 May 40	28 May -	29 May -	30 May -	31 May -

Health Advice For People Living In
Hirao

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 PurifierTurn On
Car FilterMust
N95 MaskMust
Stay IndoorMust

Must turn on the air purifier to enjoy fresh air.

Prevent Health Problems: Understand Your Risks

Hirao

Asthma
Heart Issues
Allergies
Sinus
Cold/Flu
Chronic (COPD)

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

Kasaoka, Japan

Ozu, Japan

Yakage, Japan

Hayashima, Japan

Tama, Japan

Ogoshi, Japan

Sasaguri, Japan

Fukuoka, Japan

Umi, Japan

10.

Yamaga, Japan

Moderate

4xabove Standard

Last Updated: 28 May 2025, 07:03 AM

AQI City Rankings

Air Quality Solutions For Hirao
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

Monitor the air quality

Air Quality Sensors

Sensors to measure the air quality

Fresh Air Machine

Clean the air you breathe

Car Cabin Filter

Purify the air in your car

N95 Mask

Shield yourself from pollution

air quality solutions for offices for Hirao

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

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 Hirao

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

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

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

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

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

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

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

air quality solutions for airport for Hirao

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

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

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 Hirao

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

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

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

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

Hirao's AQI Data Analytics Solutions
Air quality data monitoring platforms

Mobile App

Smart TV App

Web Dashboard

API

Widgets

Mobile App

Empower Your Decisions with Reliable Data

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

Personalized health advice as per current AQI.

Analytical data to identify trends and conditions.

Connect and control your air quality devices.

Air Quality FAQs
at Hirao

Frequently Asked Questions About Air Quality

What is the current AQI level in Hirao?

The current real-time AQI level in Hirao is 52 (Moderate). This was last updated 2025-05-28 02:54:20 PM (Local Time).

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

The best AQI level was 32 (Good) at 4:09 AM (Local Time) during the last 24 hours.

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

The worst AQI level was 52 (Moderate) at 1:09 PM (Local Time) during the last 24 hours.

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

The AQI levels in Hirao have been fluctuating throughout the last 24 hours. The levels have increased by highest 52 at 1:09 PM (Local Time), lowest 32 at 4:09 AM (Local Time).

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

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