Live

Visalia Ozone (O₃) Level

California, United States

Ozone (O₃)

26ppb

Good

Last Updated: 2026-08-18 07:01 (Local Time)

Map

Visalia

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Visalia

The current O₃ level in Visalia based on the average air quality level across the city is 26 ppb, making it healthy and safe for everyone.

1.9xBelow

The current O₃ level in Visalia is 1.9x Below the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Visalia

24 Hours

O₃

Visalia

O₃ (ppb)

17-08-2026Time18-08-2026

Time	Visalia
7:01am	22
7:31am	21
8:01am	14
8:31am	15
9:01am	15
9:31am	15
10:01am	23
10:31am	22
11:01am	30
11:31am	32
12:01pm	42
12:31pm	41
1:01pm	50
1:31pm	51
2:01pm	54
2:31pm	57
3:01pm	54
3:31pm	57
4:01pm	59
4:31pm	61
5:01pm	63
5:31pm	58
6:01pm	58
6:31pm	62
7:01pm	61
7:31pm	63
8:01pm	60
8:31pm	58
9:01pm	54
9:31pm	56
10:01pm	48
10:31pm	49
11:01pm	48
11:31pm	49
12:01am	40
12:31am	38
1:01am	42
1:31am	40
2:01am	36
2:31am	35
3:01am	34
3:31am	36
4:01am	30
4:31am	34
5:01am	28
5:31am	28
6:01am	24
6:31am	26
7:01am	26

Min. O₃8:01am

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 Visalia

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Visalia?

The current real-time O₃ level in Visalia is 26ppb (Good). This was last updated 2026-08-18 07:01 (Local Time).

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

The best O₃ level was 14 ppb (Good) at 8:01 AM, Aug 17, 2026 (Local Time) during the last 24 hours.

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

The worst O₃ level was 63 ppb (Moderate) at 5:01 PM, Aug 17, 2026 (Local Time) during the last 24 hours.

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

The O₃ levels in Visalia have been fluctuating throughout the last 24 hours. The levels have increased by highest 63 ppb at 5:01 PM, Aug 17, 2026 (Local Time), lowest 14 ppb at 8:01 AM, Aug 17, 2026 (Local Time).

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

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