AQI PM2.5 PM10 CO SO2 NO2 O3

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Osan Air Quality Index (AQI) | Air Pollution

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

Last Updated: 2025-05-30 02:39:46 PM (Local Time)

Live AQI

Air Quality is

Moderate

pm10 : 28 µg/m³

PM2.5 : 14 µg/m³

Good

050

Moderate

100

Poor

150

Unhealthy

200

Severe

300

Hazardous

301+

26 °C

Last Updated: 2025-05-30 02:39:46 PM (Local Time)

Map

Osan

Major Air Pollutants
Osan

Particulate Matter(PM2.5)

14µg/m³

Particulate Matter(PM10)

28µg/m³

Carbon Monoxide(CO)

218ppb

Sulfur Dioxide(SO2)

2ppb

Nitrogen Dioxide(NO2)

10ppb

Ozone(O3)

50ppb

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AQI Graph

Historical Air Quality Data
Osan

24 Hours

AQI

Osan

Want air quality data?

AQI Trends - Annual Air Quality Changes
Osan, Gyeonggi, South Korea

AQI

Year

AQI

Annual AQI Trends

2020

65AQI

2021

68AQI

Rise

2022

71AQI

Rise

2023

70AQI

-1%

Fall

2024

63AQI

-10%

Fall

2025

72AQI

14%

Rise

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

Rise (Worsened AQI)

Most & Least Polluted Months

Most PollutedMarch, 202196AQI

Least PollutedAugust, 202238AQI

* This data analysis is from year 2020 - 2025

Osan's Locations
Real-time Air Pollution Level

Location

Status

AQI

PM2.5(µg/m³)

PM10(µg/m³)

Temp.(°C)

Humi.(%)

Cheonggye Dong

Moderate

Dongtan Dong

Moderate

Hyangnam

Moderate

Part Dong

Moderate

Sinjangdong

Moderate

Songbuk Dong

Moderate

South Korea's Metro Cities
Air Quality Index

Busan

Daegu

Daejeon

Gwangju

Incheon

120

Sejong

Seoul

Ulsan

Air Quality Calendar 2025
Osan

2025

AQI

January

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
29 Dec -	30 Dec -	31 Dec -	1 Jan 77	2 Jan 63	3 Jan 63	4 Jan 66
5 Jan 69	6 Jan 98	7 Jan 57	8 Jan 71	9 Jan 43	10 Jan 57	11 Jan 58
12 Jan 81	13 Jan 88	14 Jan 101	15 Jan 56	16 Jan 77	17 Jan 86	18 Jan 84
19 Jan 87	20 Jan 131	21 Jan 144	22 Jan 150	23 Jan 130	24 Jan 107	25 Jan 75
26 Jan 57	27 Jan 68	28 Jan 55	29 Jan 60	30 Jan 52	31 Jan 73	1 Feb 74

February

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
26 Jan 57	27 Jan 68	28 Jan 55	29 Jan 60	30 Jan 52	31 Jan 73	1 Feb 74
2 Feb 86	3 Feb 53	4 Feb 53	5 Feb 44	6 Feb 56	7 Feb 47	8 Feb 45
9 Feb 49	10 Feb 58	11 Feb 71	12 Feb 76	13 Feb 51	14 Feb 92	15 Feb 58
16 Feb 114	17 Feb 51	18 Feb 63	19 Feb 47	20 Feb 57	21 Feb 54	22 Feb 58
23 Feb 54	24 Feb 58	25 Feb 56	26 Feb 71	27 Feb 60	28 Feb 83	1 Mar 101

March

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
23 Feb 54	24 Feb 58	25 Feb 56	26 Feb 71	27 Feb 60	28 Feb 83	1 Mar 101
2 Mar 73	3 Mar 56	4 Mar 46	5 Mar 37	6 Mar 78	7 Mar 94	8 Mar 91
9 Mar 108	10 Mar 114	11 Mar 110	12 Mar 107	13 Mar 98	14 Mar 83	15 Mar 58
16 Mar 76	17 Mar 64	18 Mar 73	19 Mar 82	20 Mar 91	21 Mar 105	22 Mar 108
23 Mar 117	24 Mar 117	25 Mar 133	26 Mar 94	27 Mar 95	28 Mar 63	29 Mar 51
30 Mar 48	31 Mar 63	1 Apr 79	2 Apr 86	3 Apr 83	4 Apr 88	5 Apr 77

April

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
30 Mar 48	31 Mar 63	1 Apr 79	2 Apr 86	3 Apr 83	4 Apr 88	5 Apr 77
6 Apr 73	7 Apr 74	8 Apr 80	9 Apr 72	10 Apr 79	11 Apr 91	12 Apr 67
13 Apr 66	14 Apr 46	15 Apr 60	16 Apr 63	17 Apr 71	18 Apr 87	19 Apr 58
20 Apr 67	21 Apr 55	22 Apr 51	23 Apr 35	24 Apr 67	25 Apr 63	26 Apr 58
27 Apr 44	28 Apr 63	29 Apr 71	30 Apr 60	1 May 63	2 May 52	3 May 51

May

Sun.	Mon.	Tue.	Wed.	Thu.	Fri.	Sat.
27 Apr 44	28 Apr 63	29 Apr 71	30 Apr 60	1 May 63	2 May 52	3 May 51
4 May 49	5 May 54	6 May 43	7 May 56	8 May 66	9 May 51	10 May 63
11 May 73	12 May 74	13 May 75	14 May 75	15 May 64	16 May 54	17 May 51
18 May 59	19 May 62	20 May 40	21 May 52	22 May 48	23 May 64	24 May 47
25 May 51	26 May 65	27 May 86	28 May 91	29 May 84	30 May -	31 May -

Health Advice For People Living In
Osan

1.3Cigarettes per day

Weekly 9.1 Cigarettes

Monthly 39.0 Cigarettes

Breathing the air in this location is as harmful as smoking 1.3 cigarettes a day.

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

Osan

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
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

Incheon, South Korea

Tangjin, South Korea

Iksan, South Korea

Hongseong, South Korea

Poor

7xabove Standard

Hwasu Dong, South Korea

Hosan, South Korea

Dangjin, South Korea

Jeonju, South Korea

Iksan-si, South Korea

Moderate

6xabove Standard

10.

Sosan, South Korea

Moderate

6xabove Standard

Last Updated: 30 May 2025, 06:01 AM

AQI City Rankings

Air Quality Solutions For Osan
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 Osan

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 Osan

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 Osan

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 Osan

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.

Osan'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 Osan

Frequently Asked Questions About Air Quality

What is the current AQI level in Osan?

The current real-time AQI level in Osan is 61 (Moderate). This was last updated 2025-05-30 02:39:46 PM (Local Time).

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

The best AQI level was 61 (Moderate) at 2:09 PM (Local Time) during the last 24 hours.

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

The worst AQI level was 97 (Moderate) at 6:09 PM, May 29, 2025 (Local Time) during the last 24 hours.

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

The AQI levels in Osan have been fluctuating throughout the last 24 hours. The levels have increased by highest 97 at 6:09 PM, May 29, 2025 (Local Time), lowest 61 at 2:09 PM (Local Time).

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

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