Key Facts
- Hangul: 미세먼지 (misemeonji)
- Meaning: fine dust, particulate matter
- Part of speech: noun
- Origin: mixed (Sino-Korean plus native)
- Syllables: four (mi-se-meon-ji)
- Register: Neutral; very common in weather news and daily conversation.
- Level: A2
Fine Dust in Korean: What Does 미세먼지 Mean?
미세먼지 is a noun for fine dust, the particulate matter reported in air-quality news. It is a mixed word: 미세 is Sino-Korean (微細, "very fine"), and 먼지 is native for dust. Register is neutral, and it is among the most common words in weather news and daily conversation, especially when the air is bad.
How Do You Pronounce 미세먼지?
Four syllables: mi-se-meon-ji. Say them evenly. The vowel in 먼 is eo, like the o of "sun" said with open lips. RR writes misemeonji. With 가 it becomes misemeonjiga.
How Do You Use 미세먼지 in a Sentence?
오늘 미세먼지가 심해요.
The fine dust is bad today.
oneul misemeonjiga simhaeyo. 오늘 means today and 심해요 means is severe. 가 marks 미세먼지 as the subject, since the word ends in a vowel.
미세먼지 때문에 마스크를 써요.
I wear a mask because of the fine dust.
misemeonji ttaemune maseukeureul sseoyo. 때문에 means because of. 마스크를 is the mask and 써요 is wear, the verb used for things on the face. The sentence gives a reason and a reaction.
미세먼지 농도를 확인해요.
I check the fine dust level.
misemeonji nongdoreul hwaginhaeyo. 농도 is concentration, so the phrase is the dust level. 확인해요 means check. Many people do this on a weather app before going out.
Common Word Combinations
| Korean | English |
|---|---|
| 미세먼지가 심하다 | fine dust is severe |
| 미세먼지 농도 | fine dust concentration |
| 초미세먼지 | ultrafine dust |
| 미세먼지 경보 | fine dust warning |
미세먼지가 심하다 is the phrase for a bad day. 미세먼지 농도 is the reading. 초미세먼지 adds a prefix for ultrafine dust, and 미세먼지 경보 is the official warning.
Cultural Note
Koreans check the fine dust level on weather apps and often wear masks on bad days.
Common Mistake
Wrong: Using 먼지 for air pollution in the news.
Correct: 미세먼지 for PM10 and 초미세먼지 for PM2.5.
먼지 is ordinary dust, like dust on a shelf. The air-quality terms are the compound forms.
How Does 미세먼지 Differ from Similar Words?
| Word | Meaning | How to tell it from 미세먼지 |
|---|---|---|
| 먼지 | dust | Ordinary dust in a room. |
| 황사 | yellow dust | Dust blown from deserts in spring. |
Deciding Where to Spend a Lunch Break
Two coworkers discuss a walk before leaving the office. One has just looked at the air-quality information on a phone.
Jisu
점심 먹고 산책할까요?
Jeomsim meokgo sanchaekalkkayo?
Shall we take a walk after lunch?
Alex
오늘은 미세먼지가 많아요.
Oneureun misemeonjiga manayo.
There’s a lot of fine dust today.
Jisu
그럼 실내에 있을까요?
Geureom sillaee isseulkkayo?
Then shall we stay indoors?
Alex
네, 카페에 가요.
Ne, kapee gayo.
Yes, let’s go to a café.
미세먼지가 많아요 describes a large amount of fine dust. The earlier example uses 심해요, “is severe”, to emphasize how bad it is. The coworkers choose a plan in response; the sentence ending 까요 makes each question a suggestion rather than a request for a weather definition.
How Do You Read an Air-Quality Label?
An air-quality display often places a category next to 미세먼지 or 초미세먼지. Learn the category as part of the label, rather than translating it as a general judgment about the weather. A sunny icon and an unfavorable dust category can appear together because sunshine and particle levels describe different conditions.
| Label | Meaning | What it tells you |
|---|---|---|
| 좋음 | good | A favorable category for the displayed measure. |
| 보통 | moderate | The middle everyday category, also translated “normal”. |
| 나쁨 | bad | An unfavorable category for that measure. |
| 매우 나쁨 | very bad | A stronger category than 나쁨. |
You can see these category labels on AirKorea’s air-quality forecast. The label belongs to the pollutant or measure beside it. If a screen gives separate rows for 미세먼지 and 초미세먼지, read each row separately. The word 농도 means concentration; a number under that heading is a measurement, while 좋음 or 나쁨 is a category.
Phrases beyond “the Dust Is Bad”
미세먼지가 많다 means there is a lot of fine dust. 미세먼지 농도가 높다 means the concentration is high. The second phrase sounds more like a report because it names the quantity being discussed. In everyday conversation, 많아요 and 심해요 are shorter ways to describe the situation.
미세먼지가 줄다 means that fine dust decreases. 미세먼지 농도가 낮다 describes a low concentration. Decreasing and low are different: a level can fall while still remaining high. This distinction helps when you hear a forecast comparing today with yesterday.
미세먼지 예보 means a fine-dust forecast. 미세먼지 경보 means a fine-dust warning. A forecast describes expected conditions; a warning is an alert. The two endings of these phrases carry useful information even before you understand the rest of a news sentence.
Where Will You Encounter 미세먼지?
Weather apps, news forecasts and conversations about outdoor plans all use 미세먼지. It may appear alongside rain, wind and temperature, but it concerns particles in the air. It is not another name for cloudy weather, and 안개, fog, describes a different phenomenon.
School or workplace notices may mention 미세먼지 when discussing an outdoor activity. In that setting, identifying the reason word 때문에 helps you connect air conditions with a changed plan. The sentence in the examples uses the same pattern to explain wearing a mask.
황사 and 미세먼지 can occur in the same report. 황사 identifies yellow dust associated with windblown desert dust, whereas 미세먼지 describes particulate pollution by its fine size. They are related air-quality vocabulary, but one label does not simply replace the other.
Related Words for the Air around You
| Related word | Meaning | Useful distinction |
|---|---|---|
| 공기 | air | The ordinary noun in descriptions of air indoors or outside. |
| 대기 | atmosphere / ambient air | Common in environmental and weather reporting. |
| 농도 | concentration | The amount of a substance within a given medium. |
| 예보 | forecast | Information about expected conditions. |
Continue with weather vocabulary to read the other parts of a forecast.
Quick Self-Test
- Does clear sunshine guarantee a 좋음 dust label?
- Which phrase names a warning: 미세먼지 예보 or 미세먼지 경보?
- Is “the concentration decreased” the same as “the concentration is low”?
Show answers
- No. Sunshine and particle levels describe different conditions.
- 미세먼지 경보. 예보 means a forecast.
- No. A concentration can decrease and still be high.
Frequently Asked Questions
What Is the Difference between 미세먼지 and 먼지?
먼지 is everyday dust. 미세먼지 is the particulate matter in air-quality news.
What Is Ultrafine Dust?
초미세먼지, the finer particles known as PM2.5.
How Do I Say the Dust Is Bad Today?
Say 오늘 미세먼지가 심해요.
What Is 황사?
Yellow dust blown from deserts in spring.
Where to Go Next
Weather words are on the nature weather vocabulary page. The next word to learn is fog in Korean, another thing that makes the air hard to see through. To practise, try the vocabulary flashcard decks or return to Korean words A to Z.