Live

Grenoble Ozone (O₃) Level

Auvergne Rhone Alpes, France

Ozone (O₃)

38ppb

Good

Last Updated: 2026-08-16 22:31 (Local Time)

Map

Grenoble

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Grenoble

The current O₃ level in Grenoble based on the average air quality level across the city is 38 ppb, making it healthy and safe for everyone.

1.3xBelow

The current O₃ level in Grenoble is 1.3x Below the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Grenoble

24 Hours

O₃

Grenoble

O₃ (ppb)

15-08-2026Time16-08-2026

Time	Grenoble
10:31pm	55
11:01pm	54
11:31pm	48
12:01am	47
12:31am	43
1:01am	45
1:31am	44
2:01am	41
2:31am	40
3:01am	38
3:31am	37
4:01am	34
4:31am	36
5:01am	38
5:31am	36
6:01am	38
6:31am	35
7:01am	34
7:31am	29
8:01am	29
8:31am	28
9:01am	27
9:31am	28
10:01am	31
10:31am	33
11:01am	36
11:31am	33
12:01pm	43
12:31pm	45
1:01pm	48
1:31pm	50
2:01pm	53
2:31pm	55
3:01pm	52
3:31pm	53
4:01pm	54
4:31pm	54
5:01pm	52
5:31pm	52
6:01pm	51
6:31pm	54
7:01pm	55
7:31pm	54
8:01pm	54
8:31pm	55
9:01pm	43
9:31pm	40
10:01pm	38
10:31pm	38

Min. O₃9:01am

Max. O₃10:31pm

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 Grenoble

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Grenoble?

The current real-time O₃ level in Grenoble is 38ppb (Good). This was last updated 2026-08-16 22:31 (Local Time).

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

The best O₃ level was 27 ppb (Good) at 9:01 AM (Local Time) during the last 24 hours.

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

The worst O₃ level was 55 ppb (Moderate) at 10:31 PM, Aug 15, 2026 (Local Time) during the last 24 hours.

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

The O₃ levels in Grenoble have been fluctuating throughout the last 24 hours. The levels have increased by highest 55 ppb at 10:31 PM, Aug 15, 2026 (Local Time), lowest 27 ppb at 9:01 AM (Local Time).

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

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