AQI PM2.5 PM10 CO SO2 NO2 O3

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Ershui Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-05-29 01:09:19 AM (Local Time)

Live AQI

Air Quality is

Moderate

pm10 : 33 µg/m³

PM2.5 : 11 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

22 °C

Last Updated: 2025-05-29 01:09:19 AM (Local Time)

Map

Ershui

Major Air Pollutants
Ershui

Particulate Matter(PM2.5)

11µg/m³

Particulate Matter(PM10)

33µg/m³

Carbon Monoxide(CO)

234ppb

Sulfur Dioxide(SO2)

1ppb

Nitrogen Dioxide(NO2)

8ppb

Ozone(O3)

16ppb

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AQI Graph

Historical Air Quality Data
Ershui

24 Hours

AQI

Ershui

Want air quality data?

AQI Trends - Annual Air Quality Changes
Ershui, Changhua, Taiwan

AQI

Year

AQI

Annual AQI Trends

2020

57AQI

2021

67AQI

18%

Rise

2022

58AQI

-13%

Fall

2023

62AQI

Rise

2024

61AQI

-2%

Fall

2025

65AQI

Rise

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

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedFebruary, 202199AQI

Least PollutedJune, 202225AQI

* This data analysis is from year 2020 - 2025

Ershui's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Zhushan

Moderate

Taiwan's Metro Cities
Air Quality Index

Hsinchu

Kaohsiung

Keelung

Tainan

Taipei

Air Quality Calendar 2025
Ershui

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 106	2 Jan 63	3 Jan 66	4 Jan 63
5 Jan 70	6 Jan 75	7 Jan 82	8 Jan 73	9 Jan 71	10 Jan 57	11 Jan 57
12 Jan 55	13 Jan 60	14 Jan 77	15 Jan 70	16 Jan 65	17 Jan 64	18 Jan 74
19 Jan 61	20 Jan 73	21 Jan 81	22 Jan 97	23 Jan 83	24 Jan 82	25 Jan 83
26 Jan 70	27 Jan 51	28 Jan 65	29 Jan 67	30 Jan 72	31 Jan 80	1 Feb 55

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 70	27 Jan 51	28 Jan 65	29 Jan 67	30 Jan 72	31 Jan 80	1 Feb 55
2 Feb 56	3 Feb 49	4 Feb 60	5 Feb 77	6 Feb 90	7 Feb 62	8 Feb 66
9 Feb 50	10 Feb 59	11 Feb 69	12 Feb 69	13 Feb 52	14 Feb 70	15 Feb 55
16 Feb 76	17 Feb 89	18 Feb 89	19 Feb 86	20 Feb 90	21 Feb 57	22 Feb 71
23 Feb 48	24 Feb 58	25 Feb 78	26 Feb 87	27 Feb 96	28 Feb 73	1 Mar 67

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 48	24 Feb 58	25 Feb 78	26 Feb 87	27 Feb 96	28 Feb 73	1 Mar 67
2 Mar 68	3 Mar 64	4 Mar 57	5 Mar 48	6 Mar 43	7 Mar 55	8 Mar 59
9 Mar 63	10 Mar 88	11 Mar 91	12 Mar 68	13 Mar 64	14 Mar 75	15 Mar 62
16 Mar 53	17 Mar 72	18 Mar 57	19 Mar 65	20 Mar 62	21 Mar 67	22 Mar 70
23 Mar 75	24 Mar 71	25 Mar 69	26 Mar 67	27 Mar 61	28 Mar 68	29 Mar 59
30 Mar 47	31 Mar 53	1 Apr 42	2 Apr 56	3 Apr 72	4 Apr 74	5 Apr 77

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 47	31 Mar 53	1 Apr 42	2 Apr 56	3 Apr 72	4 Apr 74	5 Apr 77
6 Apr 64	7 Apr 70	8 Apr 70	9 Apr 73	10 Apr 67	11 Apr 71	12 Apr 58
13 Apr 76	14 Apr 69	15 Apr 79	16 Apr 78	17 Apr 72	18 Apr 65	19 Apr 62
20 Apr 60	21 Apr 63	22 Apr 56	23 Apr 58	24 Apr 59	25 Apr 57	26 Apr 74
27 Apr 67	28 Apr 58	29 Apr 72	30 Apr 67	1 May 68	2 May 71	3 May 70

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 67	28 Apr 58	29 Apr 72	30 Apr 67	1 May 68	2 May 71	3 May 70
4 May 67	5 May 62	6 May 63	7 May 54	8 May 61	9 May 42	10 May 38
11 May 38	12 May 49	13 May 53	14 May 56	15 May 51	16 May 56	17 May 46
18 May 36	19 May 40	20 May 43	21 May 36	22 May 44	23 May 42	24 May 42
25 May 53	26 May 54	27 May 53	28 May -	29 May -	30 May -	31 May -

Health Advice For People Living In
Ershui

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

Ershui

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
Taiwan

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

Taibao, Taiwan

Kaohsiung, Taiwan

Chiayi, Taiwan

Pingtung, Taiwan

Douliu, Taiwan

Annan District, Taiwan

Tainan, Taiwan

Ershui, Taiwan

Pozi, Taiwan

10.

Pingzhen, Taiwan

Good

3xabove Standard

Last Updated: 28 May 2025, 05:22 PM

AQI City Rankings

Air Quality Solutions For Ershui
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 Ershui

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 Ershui

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 Ershui

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 Ershui

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.

Ershui'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 Ershui

Frequently Asked Questions About Air Quality

What is the current AQI level in Ershui?

The current real-time AQI level in Ershui is 55 (Moderate) due to recent rainfall by 0.5mm/hr. This was last updated 2025-05-29 01:09:19 AM (Local Time).

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

The best AQI level was 48 (Good) at 1:09 PM (Local Time) during the last 24 hours.

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

The worst AQI level was 76 (Moderate) at 8:09 PM (Local Time) during the last 24 hours.

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

The AQI levels in Ershui have been fluctuating throughout the last 24 hours. The levels have increased by highest 76 at 8:09 PM (Local Time), lowest 48 at 1:09 PM (Local Time).

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

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