Live

Sai Yoi Ozone (O₃) Level

Den Chai District, Phrae, Thailand

Ozone (O₃)

35ppb

Good

Last Updated: 2026-08-07 17:51:02 (Local Time)

Map

Sai Yoi

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Sai Yoi

The current O₃ level at Sai Yoi is 35 ppb making it healthy and safe for everyone in the area.

1.4xBelow

The current O₃ level in Sai Yoi is 1.4x Below the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Sai Yoi

24 Hours

O₃

Sai Yoi

O₃ (ppb)

06-08-2026Time07-08-2026

Time	Sai Yoi
6:01pm	35
6:31pm	33
7:01pm	32
7:31pm	32
8:01pm	35
8:31pm	32
9:01pm	30
9:31pm	31
10:01pm	27
10:31pm	27
11:01pm	30
11:31pm	27
12:01am	30
12:31am	29
1:01am	29
1:31am	27
2:01am	32
2:31am	29
3:01am	28
3:31am	30
4:01am	29
4:31am	25
5:01am	26
5:31am	27
6:01am	24
6:31am	24
7:01am	24
7:31am	23
8:01am	25
8:31am	26
9:01am	21
9:31am	23
10:01am	21
10:31am	23
11:01am	23
11:31am	29
12:01pm	33
12:31pm	35
1:01pm	37
1:31pm	35
2:01pm	36
2:31pm	36
3:01pm	36
3:31pm	36
4:01pm	34
4:31pm	36
5:01pm	34
5:31pm	36

Min. O₃9:01am

Max. O₃1:01pm

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 Sai Yoi

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Sai Yoi?

The current real-time O₃ level in Sai Yoi is 35ppb (Good). This was last updated 2026-08-07 17:51:02 (Local Time).

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

The best O₃ level was 21 ppb (Good) at 9:01 AM (Local Time) during the last 24 hours.

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

The worst O₃ level was 37 ppb (Good) at 1:01 PM (Local Time) during the last 24 hours.

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

The O₃ levels in Sai Yoi have been fluctuating throughout the last 24 hours. The levels have increased by highest 37 ppb at 1:01 PM (Local Time), lowest 21 ppb at 9:01 AM (Local Time).

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

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