Live

Hear Ozone (O₃) Level

Sakurai, Nara, Japan

Ozone (O₃)

22ppb

Good

Last Updated: 2026-08-04 04:21:01 (Local Time)

Map

Hear

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Hear

The current O₃ level at Hear is 22 ppb making it healthy and safe for everyone in the area.

2.3xBelow

The current O₃ level in Hear is 2.3x Below the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Hear

24 Hours

O₃

Hear

O₃ (ppb)

03-08-2026Time04-08-2026

Time	Hear
4:31am	32
5:01am	30
5:31am	30
6:01am	32
6:31am	30
7:01am	28
7:31am	30
8:01am	28
8:31am	27
9:01am	29
9:31am	26
10:01am	29
10:31am	24
11:01am	26
11:31am	32
12:01pm	29
12:31pm	29
1:01pm	30
1:31pm	37
2:01pm	34
2:31pm	35
3:01pm	41
3:31pm	39
4:01pm	40
4:31pm	39
5:01pm	42
5:31pm	39
6:01pm	42
6:31pm	40
7:01pm	40
7:31pm	36
8:01pm	31
8:31pm	32
9:01pm	36
9:31pm	30
10:01pm	26
10:31pm	26
11:01pm	27
11:31pm	24
12:01am	24
12:31am	27
1:01am	22
1:31am	22
2:01am	22
2:31am	22
3:01am	21
3:31am	24
4:01am	24
4:31am	23

Min. O₃3:01am

Max. O₃5:01pm

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 Hear

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Hear?

The current real-time O₃ level in Hear is 22ppb (Good). This was last updated 2026-08-04 04:21:01 (Local Time).

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

The best O₃ level was 21 ppb (Good) at 3:01 AM, Aug 4, 2026 (Local Time) during the last 24 hours.

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

The worst O₃ level was 42 ppb (Good) at 5:01 PM (Local Time) during the last 24 hours.

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

The O₃ levels in Hear have been fluctuating throughout the last 24 hours. The levels have increased by highest 42 ppb at 5:01 PM (Local Time), lowest 21 ppb at 3:01 AM, Aug 4, 2026 (Local Time).

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

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