Live

Gangnam Gu Ozone (O₃) Level

Gwacheon, Gyeonggi, South Korea

Ozone (O₃)

25ppb

Good

Last Updated: 2026-07-16 05:41 (Local Time)

Map

Gangnam Gu

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Gangnam Gu

The current O₃ level at Gangnam Gu is 25 ppb making it healthy and safe for everyone in the area.

2.03xBelow

The current O₃ level in Gangnam Gu is 2.03x Below the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Gangnam Gu

24 Hours

O₃

Gangnam Gu

O₃ (ppb)

15-07-2026Time16-07-2026

Time	Gangnam Gu
6:01am	28
6:31am	28
7:01am	30
7:31am	26
8:01am	27
8:31am	25
9:01am	26
9:31am	25
10:01am	26
10:31am	24
11:01am	26
11:31am	28
12:01pm	29
12:31pm	30
1:01pm	30
1:31pm	27
2:01pm	29
2:31pm	31
3:01pm	30
3:31pm	29
4:01pm	29
4:31pm	30
5:01pm	29
5:31pm	32
6:01pm	32
6:31pm	29
7:01pm	33
7:31pm	29
8:01pm	33
8:31pm	33
9:01pm	32
9:31pm	30
10:01pm	34
10:31pm	35
11:01pm	34
11:31pm	35
12:01am	34
12:31am	36
1:01am	31
1:31am	28
2:01am	29
2:31am	33
3:01am	30
3:31am	32
4:01am	30
4:31am	28
5:01am	25
5:31am	25

Min. O₃10:31am

Max. O₃12:31am

Want air quality data?

Do you know that Ozone's total mass is 3 billion metric tons in the atmosphere? It looks like a lot but has only 0.00006% of the atmosphere. Besides, Ozone's peak concentration is 32 kilometres above the Earth's surface.

Uncovering the Sources of Ozone (O₃): Where Does It Come From?

Refineries

Industrial processes emit substances.

Power plants

Emissions from burning fossil fuels.

Paints evaporations

Vocs from paints react with sunlight.

Transportation

Diesel operated vehicles reacts and form ozone.

Short-Term O₃ Exposure Impacts

Chest pain

Discomfort or pain in the chest due to respiratory stress.

Breathing shortness

Difficulty in breathing or feeling of breathlessness.

Respiratory irritation

Inflammation and irritation of the respiratory tract.

Wheezing and coughing

Whistling sound and persistent cough.

Trigger asthma attacks

Aggravation of asthma symptoms.

Why you should care about Ozone (O₃)?

Know More About O₃ Sensor

Air Quality FAQs
at Gangnam Gu

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Gangnam Gu?

The current real-time O₃ level in Gangnam Gu is 25ppb (Good). This was last updated 2026-07-16 05:41 (Local Time).

2. When was the best O₃ level in Gangnam Gu in the last 24 hours?

The best O₃ level was 24 ppb (Good) at 10:31 AM (Local Time) during the last 24 hours.

3. When was the worst O₃ level in Gangnam Gu in the last 24 hours?

The worst O₃ level was 36 ppb (Good) at 12:31 AM, Jul 16, 2026 (Local Time) during the last 24 hours.

4. What is the current trend of O₃ levels in Gangnam Gu during last 24 hours?

The O₃ levels in Gangnam Gu have been fluctuating throughout the last 24 hours. The levels have increased by highest 36 ppb at 12:31 AM, Jul 16, 2026 (Local Time), lowest 24 ppb at 10:31 AM (Local Time).

5. What actions are recommended as per the current O₃ level in Gangnam Gu?

The air quality is satisfactory, and air pollution poses little or no risk. No special precautions are needed; enjoy outdoor activities freely.