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Minamiozuma Ozone (O₃) Level

Nagano, Japan

Ozone (O₃)

21ppb

Good

Last Updated: 2026-08-03 23:41 (Local Time)

Map

Minamiozuma

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Minamiozuma

The current O₃ level in Minamiozuma based on the average air quality level across the city is 21 ppb, making it healthy and safe for everyone.

2.4xBelow

The current O₃ level in Minamiozuma is 2.4x Below the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Minamiozuma

24 Hours

O₃

Minamiozuma

O₃ (ppb)

03-08-2026Time03-08-2026

Time	Minamiozuma
12:01am	28
12:31am	30
1:01am	28
1:31am	29
2:01am	26
2:31am	28
3:01am	28
3:31am	26
4:01am	27
4:31am	30
5:01am	26
5:31am	26
6:01am	22
6:31am	23
7:01am	22
7:31am	20
8:01am	19
8:31am	20
9:01am	17
9:31am	17
10:01am	18
10:31am	17
11:01am	16
11:31am	21
12:01pm	21
12:31pm	19
1:01pm	22
1:31pm	22
2:01pm	24
2:31pm	24
3:01pm	26
3:31pm	25
4:01pm	26
4:31pm	24
5:01pm	25
5:31pm	27
6:01pm	23
6:31pm	24
7:01pm	26
7:31pm	24
8:01pm	23
8:31pm	24
9:01pm	22
9:31pm	22
10:01pm	22
10:31pm	22
11:01pm	20
11:31pm	22

Min. O₃11:01am

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 Minamiozuma

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Minamiozuma?

The current real-time O₃ level in Minamiozuma is 21ppb (Good). This was last updated 2026-08-03 23:41 (Local Time).

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

The best O₃ level was 16 ppb (Good) at 11:01 AM (Local Time) during the last 24 hours.

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

The worst O₃ level was 30 ppb (Good) at 12:31 AM (Local Time) during the last 24 hours.

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

The O₃ levels in Minamiozuma have been fluctuating throughout the last 24 hours. The levels have increased by highest 30 ppb at 12:31 AM (Local Time), lowest 16 ppb at 11:01 AM (Local Time).

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

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