Seongnam: Air Pollution Today — AQI Index, PM2.5/PM10, Smog Alerts and Forecast

2 weather warnings in effect for South Korea 🌡️ Extreme heat💨 Strong wind

Latest air quality data: Seongnam

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Pollution and air quality forecast for Seongnam. Today is Thursday, August 27, 2026. The following air pollution values have been recorded for Seongnam:

particulate matter (PM2.5) dust - 20 (Moderate)
particulate matter (PM10) suspended dust - 20 (Moderate)
ozone (O3) - 39 (Good)
nitrogen dioxide (NO2) - 47 (Moderate)
sulfur dioxide (SO2) - 24 (Good)
carbon monoxide (CO) - 212 (Good)

Real-time Air Quality Index (AQI) for Seongnam, Thursday, August 27, 2026: 2.

AQI 2 Moderate

What is the air quality in Seongnam today? Is the air polluted in Seongnam?. Is there smog?

Today (Thursday, August 27, 2026) air quality is moderate in Seongnam. Some pollutants in Seongnam may slightly affect very few hypersensitive individuals. Air pollutants in Seongnam may cause minor breathing discomfort to sensitive people.

What is the current level of PM2.5 in Seongnam? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 20 (Moderate) For comparison, the highest level of PM2.5 in Seongnam in the last 7 days was: 53 (Thursday, August 20, 2026) and the lowest: 15 (Tuesday, August 25, 2026).

What is the level of PM10 today in Seongnam? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Seongnam is: 20 (Moderate)

How is the O3 level today in Seongnam? (ozone (O3))
39 (Good)

How high is the level of NO2? (nitrogen dioxide (NO2))
47 (Moderate)

What is the level of SO2 pollution? (sulfur dioxide (SO2))
24 (Good)

How high is the CO level? (carbon monoxide (CO))
212 (Good)

Current data Thursday, August 27, 2026 at 10:00 AM

PM2,5 20 (Moderate)

PM10 20 (Moderate)

O3 39 (Good)

NO2 47 (Moderate)

SO2 24 (Good)

CO 212 (Good)

Data on air pollution from recent days in Seongnam

index	2026-08-27	2026-08-26	2026-08-25	2026-08-24	2026-08-23	2026-08-22	2026-08-21	2026-08-20
pm25	31 Moderate	27 Moderate	15 Moderate	29 Moderate	21 Moderate	19 Moderate	44 Unhealthy for Sensitive Groups	53 Unhealthy for Sensitive Groups
pm10	31 Moderate	29 Moderate	17 Good	30 Moderate	22 Moderate	20 Moderate	45 Moderate	56 Unhealthy for Sensitive Groups
o3	38 Good	26 Good	44 Good	42 Good	52 Good	30 Good	41 Good	46 Good
no2	59 Moderate	57 Moderate	38 Good	48 Moderate	43 Moderate	45 Moderate	69 Moderate	84 Moderate
so2	25 Good	32 Good	18 Good	28 Good	19 Good	13 Good	20 Good	31 Good
co	439 Good	532 Good	303 Good	361 Good	355 Good	313 Good	452 Good	617 Good

data source »

Seongnam

Thursday, August 27, 2026 at 10:00 AM

PM2,5 20 (Moderate)

particulate matter (PM2.5) dust

PM10 20 (Moderate)

particulate matter (PM10) suspended dust

O3 39 (Good)

ozone (O3)

NO2 47 (Moderate)

nitrogen dioxide (NO2)

SO2 24 (Good)

sulfur dioxide (SO2)

CO 212 (Good)

carbon monoxide (CO)

Seongnam

index	2026-08-20	2026-08-21	2026-08-22	2026-08-23	2026-08-24	2026-08-25	2026-08-26	2026-08-27
pm25	53	44	19	21	29	15	27	31
pm10	56	45	20	22	30	17	29	31
o3	46	41	30	52	42	44	26	38
no2	84	69	45	43	48	38	57	59
so2	31	20	13	19	28	18	32	25
co	617	452	313	355	361	303	532	439

* Pollution data source: https://openaq.org () The data is licensed under CC-By 4.0

🌦️ Weather · 16-day Forecast — South Korea

16-day weather forecast for South Korea: today around 32°C (cloudy), lows near 21°C. Daily temperature and conditions, updated every day. A moderate breeze (about 7 km/h) is partially dispersing pollutants today.

☀️ UV Index · 16-day Forecast — South Korea

The UV index in South Korea today is 7.4 (high) — unprotected fair skin can burn in about 25 minutes.

📍 Air quality in nearby cities

Live PM2.5 around Seongnam — compare nearby locations.

Anyang 18 µg/m³
Suwon 27 µg/m³
Seoul 12 µg/m³
Uijeongbu 20 µg/m³
Goyang 12 µg/m³
Incheon 12 µg/m³
Hwaseong 18 µg/m³
Busan 8 µg/m³

Frequently asked questions

Is the air safe to breathe in Seongnam today?

The current average PM2.5 across Seongnam is about 20 µg/m³, rated “Moderate”. Air quality is acceptable, but unusually sensitive people should limit prolonged outdoor exertion.

What is the current PM2.5 level in Seongnam?

Right now PM2.5 in Seongnam averages about 20 µg/m³ (“Moderate”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Seongnam?

Over the past week, the highest daily PM2.5 in Seongnam was recorded on Thursday, August 20 (about 53 µg/m³).

What is the UV index in Seongnam today?

The UV index in Seongnam today is 7.4 (high) — unprotected fair skin can burn in about 25 minutes.

Does today's wind help disperse smog in Seongnam?

A moderate breeze (about 7 km/h) is partially dispersing pollutants today.

How is air quality measured?

Air quality here is based on PM2.5 — the concentration of fine particulate matter in µg/m³. Lower values mean cleaner air. Data is updated daily from Open-Meteo.