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Daejeon Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-11-26 07:46:43 AM (Local Time)

Live AQI

96(AQI-US)

Air Quality is

Moderate

pm10 : 47 µg/m³

PM2.5 : 33 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

5 °C

Last Updated: 2025-11-26 07:46:43 AM (Local Time)

Map

Daejeon

Major Air Pollutants
Daejeon

Particulate Matter(PM2.5)

33µg/m³

Particulate Matter(PM10)

47µg/m³

Carbon Monoxide(CO)

431ppb

Sulfur Dioxide(SO2)

2ppb

Nitrogen Dioxide(NO2)

13ppb

Ozone(O3)

21ppb

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AQI Graph

Historical Air Quality Data
Daejeon

24 Hours

AQI

Daejeon

AQI

25-11-2025Time26-11-2025

Time	Daejeon
07 AM	142
08 AM	137
09 AM	133
10 AM	118
11 AM	120
12 PM	121
01 PM	132
02 PM	141
03 PM	140
04 PM	132
05 PM	110
06 PM	79
07 PM	77
08 PM	71
09 PM	75
10 PM	79
11 PM	82
12 AM	83
01 AM	90
02 AM	94
03 AM	99
04 AM	102
05 AM	101
06 AM	100
07 AM	96

Min.at 8:04 PM on 25th Nov

142

Max.at 7:52 AM on 25th Nov

Want air quality data?

AQI Trends - Annual Air Quality Changes
Daejeon, Daejeon, South Korea

AQI

Year

AQI

AQI	AQI
Mar 2020	67
Apr 2020	66
May 2020	63
Jun 2020	65
Jul 2020	38
Aug 2020	41
Sep 2020	45
Oct 2020	60
Nov 2020	66
Dec 2020	71
Jan 2021	65
Feb 2021	72
Mar 2021	81
Apr 2021	58
May 2021	70
Jun 2021	64
Jul 2021	42
Aug 2021	44
Sep 2021	38
Oct 2021	54
Nov 2021	66
Dec 2021	69
Jan 2022	77
Feb 2022	80
Mar 2022	76
Apr 2022	64
May 2022	61
Jun 2022	46
Jul 2022	50
Aug 2022	35
Sep 2022	44
Oct 2022	52
Nov 2022	76
Dec 2022	71
Jan 2023	72
Feb 2023	88
Mar 2023	86
Apr 2023	75
May 2023	58
Jun 2023	58
Jul 2023	47
Aug 2023	50
Sep 2023	44
Oct 2023	52
Nov 2023	55
Dec 2023	67
Jan 2024	67
Feb 2024	61
Mar 2024	65
Apr 2024	64
May 2024	55
Jun 2024	57
Jul 2024	34
Aug 2024	48
Sep 2024	37
Oct 2024	45
Nov 2024	53
Dec 2024	58
Jan 2025	72
Feb 2025	60
Mar 2025	74
Apr 2025	61
May 2025	55
Jun 2025	56
Jul 2025	47
Aug 2025	48
Sep 2025	38
Oct 2025	48
Nov 2025	67

Annual AQI Trends

2020

57AQI

2021

60AQI

Rise

2022

63AQI

Rise

2023

63AQI

No Change

2024

54AQI

-14%

Fall

2025

57AQI

Rise

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

No Change

Most & Least Polluted Months

Most PollutedFebruary, 202388AQI

Least PollutedJuly, 202434AQI

* This data analysis is from year 2020 - 2025

Daejeon's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Moderate

Moderate

Moderate

Moderate

Moderate

Moderate

Moderate

Moderate

Poor

102

Jeongnim Dong

Moderate

Munchang Dong

Poor

102

Munpyeong Dong

Poor

105

Noe Dong

Moderate

Okcheon Gun Okcheon Eup

Poor

107

Sangdaedong

Moderate

Seongnam Dong

Moderate

Wolpyeong Dong

Moderate

South Korea's Metro Cities
Air Quality Index

Busan

Daegu

Daejeon

Gwangju

Incheon

116

temp.3°C

hum.87%

Sejong

105

temp.5°C

hum.93%

Seoul

115

Ulsan

Air Quality Calendar 2025
Daejeon

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 62	2 Jan 60	3 Jan 54	4 Jan 54
5 Jan 59	6 Jan 76	7 Jan 53	8 Jan 61	9 Jan 41	10 Jan 55	11 Jan 58
12 Jan 69	13 Jan 76	14 Jan 81	15 Jan 55	16 Jan 61	17 Jan 82	18 Jan 79
19 Jan 73	20 Jan 95	21 Jan 127	22 Jan 130	23 Jan 117	24 Jan 107	25 Jan 81
26 Jan 57	27 Jan 64	28 Jan 49	29 Jan 57	30 Jan 57	31 Jan 71	1 Feb 83

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 57	27 Jan 64	28 Jan 49	29 Jan 57	30 Jan 57	31 Jan 71	1 Feb 83
2 Feb 89	3 Feb 60	4 Feb 52	5 Feb 47	6 Feb 51	7 Feb 50	8 Feb 45
9 Feb 50	10 Feb 57	11 Feb 69	12 Feb 65	13 Feb 50	14 Feb 71	15 Feb 56
16 Feb 96	17 Feb 53	18 Feb 58	19 Feb 47	20 Feb 54	21 Feb 50	22 Feb 57
23 Feb 53	24 Feb 52	25 Feb 53	26 Feb 75	27 Feb 61	28 Feb 64	1 Mar 74

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 53	24 Feb 52	25 Feb 53	26 Feb 75	27 Feb 61	28 Feb 64	1 Mar 74
2 Mar 68	3 Mar 49	4 Mar 44	5 Mar 36	6 Mar 62	7 Mar 73	8 Mar 70
9 Mar 81	10 Mar 79	11 Mar 88	12 Mar 82	13 Mar 78	14 Mar 73	15 Mar 46
16 Mar 62	17 Mar 59	18 Mar 72	19 Mar 79	20 Mar 89	21 Mar 93	22 Mar 101
23 Mar 98	24 Mar 103	25 Mar 122	26 Mar 82	27 Mar 87	28 Mar 68	29 Mar 52
30 Mar 51	31 Mar 60	1 Apr 71	2 Apr 76	3 Apr 77	4 Apr 79	5 Apr 66

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 51	31 Mar 60	1 Apr 71	2 Apr 76	3 Apr 77	4 Apr 79	5 Apr 66
6 Apr 64	7 Apr 64	8 Apr 73	9 Apr 65	10 Apr 75	11 Apr 73	12 Apr 63
13 Apr 58	14 Apr 45	15 Apr 53	16 Apr 61	17 Apr 64	18 Apr 77	19 Apr 53
20 Apr 60	21 Apr 46	22 Apr 41	23 Apr 40	24 Apr 56	25 Apr 59	26 Apr 48
27 Apr 41	28 Apr 52	29 Apr 59	30 Apr 56	1 May 50	2 May 49	3 May 48

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 41	28 Apr 52	29 Apr 59	30 Apr 56	1 May 50	2 May 49	3 May 48
4 May 46	5 May 47	6 May 45	7 May 50	8 May 65	9 May 42	10 May 46
11 May 62	12 May 64	13 May 69	14 May 70	15 May 53	16 May 46	17 May 46
18 May 56	19 May 58	20 May 44	21 May 43	22 May 54	23 May 56	24 May 45
25 May 44	26 May 58	27 May 70	28 May 71	29 May 76	30 May 66	31 May 74

June

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
1 Jun 81	2 Jun 91	3 Jun 78	4 Jun 60	5 Jun 56	6 Jun 61	7 Jun 64
8 Jun 62	9 Jun 60	10 Jun 57	11 Jun 52	12 Jun 56	13 Jun 62	14 Jun 42
15 Jun 51	16 Jun 55	17 Jun 60	18 Jun 61	19 Jun 63	20 Jun 48	21 Jun 42
22 Jun 33	23 Jun 46	24 Jun 45	25 Jun 38	26 Jun 49	27 Jun 56	28 Jun 58
29 Jun 46	30 Jun 45	1 Jul 43	2 Jul 41	3 Jul 51	4 Jul 51	5 Jul 47

July

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Jun 46	30 Jun 45	1 Jul 43	2 Jul 41	3 Jul 51	4 Jul 51	5 Jul 47
6 Jul 50	7 Jul 57	8 Jul 58	9 Jul 51	10 Jul 49	11 Jul 51	12 Jul 51
13 Jul 59	14 Jul 53	15 Jul 42	16 Jul 51	17 Jul 41	18 Jul 43	19 Jul 34
20 Jul 42	21 Jul 40	22 Jul 35	23 Jul 45	24 Jul 51	25 Jul 50	26 Jul 43
27 Jul 38	28 Jul 49	29 Jul 49	30 Jul 47	31 Jul 51	1 Aug 56	2 Aug 63

August

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Jul 38	28 Jul 49	29 Jul 49	30 Jul 47	31 Jul 51	1 Aug 56	2 Aug 63
3 Aug 61	4 Aug 51	5 Aug 51	6 Aug 49	7 Aug 48	8 Aug 48	9 Aug 53
10 Aug 46	11 Aug 51	12 Aug 43	13 Aug 39	14 Aug 39	15 Aug 39	16 Aug 38
17 Aug 40	18 Aug 50	19 Aug 43	20 Aug 45	21 Aug 47	22 Aug 46	23 Aug 48
24 Aug 51	25 Aug 48	26 Aug 43	27 Aug 48	28 Aug 53	29 Aug 45	30 Aug 44
31 Aug 49	1 Sep 40	2 Sep 45	3 Sep 48	4 Sep 42	5 Sep 36	6 Sep 39

September

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
31 Aug 49	1 Sep 40	2 Sep 45	3 Sep 48	4 Sep 42	5 Sep 36	6 Sep 39
7 Sep 39	8 Sep 47	9 Sep 45	10 Sep 44	11 Sep 43	12 Sep 42	13 Sep 36
14 Sep 40	15 Sep 43	16 Sep 42	17 Sep 35	18 Sep 34	19 Sep 31	20 Sep 28
21 Sep 27	22 Sep 26	23 Sep 26	24 Sep 30	25 Sep 23	26 Sep 45	27 Sep 50
28 Sep 34	29 Sep 44	30 Sep 45	1 Oct 58	2 Oct 65	3 Oct 51	4 Oct 42

October

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
28 Sep 34	29 Sep 44	30 Sep 45	1 Oct 58	2 Oct 65	3 Oct 51	4 Oct 42
5 Oct 45	6 Oct 48	7 Oct 31	8 Oct 37	9 Oct 42	10 Oct 50	11 Oct 51
12 Oct 55	13 Oct 37	14 Oct 41	15 Oct 41	16 Oct 40	17 Oct 54	18 Oct 45
19 Oct 62	20 Oct 63	21 Oct 63	22 Oct 52	23 Oct 24	24 Oct 31	25 Oct 41
26 Oct 58	27 Oct 51	28 Oct 35	29 Oct 56	30 Oct 63	31 Oct 61	1 Nov 59

November

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Oct 58	27 Oct 51	28 Oct 35	29 Oct 56	30 Oct 63	31 Oct 61	1 Nov 59
2 Nov 47	3 Nov 48	4 Nov 62	5 Nov 88	6 Nov 103	7 Nov 99	8 Nov 66
9 Nov 66	10 Nov 42	11 Nov 46	12 Nov 76	13 Nov 81	14 Nov 68	15 Nov 65
16 Nov 65	17 Nov 55	18 Nov 51	19 Nov 61	20 Nov 75	21 Nov 47	22 Nov 57
23 Nov 81	24 Nov 100	25 Nov -	26 Nov -	27 Nov -	28 Nov -	29 Nov -
30 Nov -	1 Dec -	2 Dec -	3 Dec -	4 Dec -	5 Dec -	6 Dec -

Health Advice For People Living In
Daejeon

1.6Cigarettes per day

Weekly 11.2 Cigarettes

Monthly 48 Cigarettes

Breathing the air in this location is as harmful as smoking 1.6 cigarettes a day.

Source:

Berkeley Earth

Disclaimer: This cigarette-equivalent estimate is based on the average PM2.5 concentration over the last 24 hours, assuming continuous exposure during that time.

Solutions for Current AQI

Air PurifierTurn On
Car FilterMust
N95 MaskMust
Stay IndoorMust

Must turn on the air purifier to enjoy fresh air.

Get an Air Purifier

Prevent Health Problems: Understand Your Risks

Daejeon

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

Mild Chances of Asthma

Asthma

Risk of Asthma symptoms is Mild 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.

Disclaimer: The above health risks are precautionary suggestions based on current AQI levels. You may not feel the effects immediately, but prolonged exposure to air pollution can contribute to these health conditions over time. AQI.IN is neither a medical expert nor a provider of medical advice. Please consult a doctor if you experience any of the above similar symptoms.

Most Polluted Cities 2025
South Korea

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

Pocheon, South Korea

Unhealthy

11xabove Standard

Dongducheon, South Korea

Yanggok, South Korea

Pyeongtaek, South Korea

Osan, South Korea

Paju, South Korea

Ansan, South Korea

Goyang, South Korea

Uijeongbu, South Korea

Poor

9xabove Standard

10.

Guri, South Korea

Poor

9xabove Standard

Last Updated: 25 Nov 2025, 10:49 PM

AQI City Rankings

Air Quality Solutions For Daejeon
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 Daejeon

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 Daejeon

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 Daejeon

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 Daejeon

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.

Daejeon'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

Get it onApp Store

Get it onGoogle Play

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 Daejeon

Frequently Asked Questions About Air Quality

What is the current AQI level in Daejeon?

The current real-time AQI level in Daejeon is 96 (Moderate). This was last updated 2025-11-26 07:46:43 AM (Local Time).

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

The best AQI level was 71 (Moderate) at 8:04 PM (Local Time) during the last 24 hours.

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

The worst AQI level was 142 (Poor) at 7:52 AM (Local Time) during the last 24 hours.

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

The AQI levels in Daejeon have been fluctuating throughout the last 24 hours. The levels have increased by highest 142 at 7:52 AM (Local Time), lowest 71 at 8:04 PM (Local Time).

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

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