Cheongju-si: 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: Cheongju-si

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

particulate matter (PM2.5) dust - 36 (Unhealthy for Sensitive Groups)
particulate matter (PM10) suspended dust - 37 (Moderate)
ozone (O3) - 81 (Moderate)
nitrogen dioxide (NO2) - 45 (Moderate)
sulfur dioxide (SO2) - 24 (Good)
carbon monoxide (CO) - 206 (Good)

Real-time Air Quality Index (AQI) for Cheongju-si, Thursday, August 27, 2026: 3.

AQI 3 Unhealthy for Sensitive Groups

What is the air quality in Cheongju-si today? Is the air polluted in Cheongju-si?. Is there smog?

Today (Thursday, August 27, 2026) air quality is moderately polluted in Cheongju-si. Healthy people may experience slight irritations and sensitive persons will be slightly affected to a larger extent by the pollutions in Cheongju-si.

What is the current level of PM2.5 in Cheongju-si? (particulate matter (PM2.5) dust)
Today's PM2.5 level is: 36 (Unhealthy for Sensitive Groups) For comparison, the highest level of PM2.5 in Cheongju-si in the last 7 days was: 36 (Thursday, August 27, 2026) and the lowest: 12 (Sunday, August 23, 2026).

What is the level of PM10 today in Cheongju-si? (particulate matter (PM10) suspended dust)
The current level of particulate matter PM10 in Cheongju-si is: 37 (Moderate)

How is the O3 level today in Cheongju-si? (ozone (O3))
81 (Moderate)

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

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

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

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

PM2,5 36 (Unhealthy for Sensitive Groups)

PM10 37 (Moderate)

O3 81 (Moderate)

NO2 45 (Moderate)

SO2 24 (Good)

CO 206 (Good)

Data on air pollution from recent days in Cheongju-si

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	36 Unhealthy for Sensitive Groups	28 Moderate	16 Moderate	22 Moderate	12 Good	13 Moderate	16 Moderate	19 Moderate
pm10	37 Moderate	29 Moderate	17 Good	23 Moderate	12 Good	13 Good	17 Good	20 Moderate
o3	45 Good	72 Moderate	42 Good	72 Moderate	63 Good	59 Good	32 Good	72 Moderate
no2	69 Moderate	47 Moderate	36 Good	36 Good	24 Good	27 Good	46 Moderate	31 Good
so2	20 Good	12 Good	10 Good	13 Good	6 Good	6 Good	5 Good	7 Good
co	341 Good	292 Good	247 Good	272 Good	290 Good	250 Good	252 Good	290 Good

data source »

Quality of life in Cheongju-si

Green and Parks in the City

Cheongju-si 0%

Japan: 65% Taiwan: 53% Hong Kong: 52%

particulate matter PM2.5

Cheongju-si 27 (Moderate)

Pleasure of spending time in the city

Cheongju-si 0%

North Korea: 44% Japan: 69% Taiwan: 47% Hong Kong: 43%

particulate matter PM10

Cheongju-si 52 (Unhealthy for Sensitive Groups)

Air Pollution

Cheongju-si 93%

North Korea: 44% Japan: 33% Taiwan: 61% Hong Kong: 67%

Garbage Disposal

Cheongju-si 0%

North Korea: 47% Japan: 71% Taiwan: 65% Hong Kong: 52%

Availability and quality of drinking water

Cheongju-si 75%

North Korea: 47% Japan: 73% Taiwan: 54% Hong Kong: 66%

Cleanliness and tidiness

Cheongju-si 25%

North Korea: 58% Japan: 74% Taiwan: 56% Hong Kong: 54%

Noise and Light pollution

Cheongju-si 0%

North Korea: 33% Japan: 44% Taiwan: 59% Hong Kong: 66%

Water Pollution

Cheongju-si 50%

North Korea: 56% Japan: 36% Taiwan: 58% Hong Kong: 53%

Source: Numbeo

Cheongju-si

Thursday, August 27, 2026 at 10:00 AM

PM2,5 36 (Unhealthy for Sensitive Groups)

particulate matter (PM2.5) dust

PM10 37 (Moderate)

particulate matter (PM10) suspended dust

O3 81 (Moderate)

ozone (O3)

NO2 45 (Moderate)

nitrogen dioxide (NO2)

SO2 24 (Good)

sulfur dioxide (SO2)

CO 206 (Good)

carbon monoxide (CO)

Cheongju-si

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	19	16	13	12	22	16	28	36
pm10	20	17	13	12	23	17	29	37
o3	72	32	59	63	72	42	72	45
no2	31	46	27	24	36	36	47	69
so2	7.1	5.4	5.8	5.8	13	9.6	12	20
co	290	252	250	290	272	247	292	341

* 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 Cheongju-si — compare nearby locations.

Seoul 12 µg/m³
Busan 8 µg/m³
Incheon 12 µg/m³
Daegu 12 µg/m³
Daejeon 28 µg/m³
Gwangju 10 µg/m³
Suwon 27 µg/m³
Goyang 12 µg/m³

Frequently asked questions

Is the air safe to breathe in Cheongju-si today?

The current average PM2.5 across Cheongju-si is about 36 µg/m³, rated “Unhealthy for Sensitive Groups”. Air quality is acceptable, but unusually sensitive people should limit prolonged outdoor exertion.

What is the current PM2.5 level in Cheongju-si?

Right now PM2.5 in Cheongju-si averages about 36 µg/m³ (“Unhealthy for Sensitive Groups”). PM2.5 are fine particles small enough to reach the lungs and bloodstream.

Which day last week had the worst air in Cheongju-si?

Over the past week, the highest daily PM2.5 in Cheongju-si was recorded on Thursday, August 27 (about 36 µg/m³).

What is the UV index in Cheongju-si today?

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

Does today's wind help disperse smog in Cheongju-si?

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.