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Century Compound Ozone (O₃) Level

Zhangjiakou, Hebei, China

Ozone (O₃)

51ppb

Moderate

Last Updated: 2026-08-11 16:31 (Local Time)

Map

Century Compound

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Century Compound

The current O₃ level at Century Compound is 51 ppb making it acceptable, but sensitive individuals should be cautious.

1.0007xAbove

The current O₃ level in Century Compound is 1.0007x Above the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Century Compound

24 Hours

O₃

Century Compound

O₃ (ppb)

10-08-2026Time11-08-2026

Time	Century Compound
4:31pm	58
5:01pm	55
5:31pm	60
6:01pm	54
6:31pm	55
7:01pm	57
7:31pm	57
8:01pm	54
8:31pm	65
9:01pm	53
9:31pm	62
10:01pm	50
10:31pm	51
11:01pm	56
11:31pm	48
12:01am	53
12:31am	48
1:01am	50
1:31am	47
2:01am	49
2:31am	47
3:01am	53
3:31am	56
4:01am	54
4:31am	49
5:01am	51
5:31am	43
6:01am	43
6:31am	44
7:01am	38
7:31am	39
8:01am	38
8:31am	35
9:01am	45
9:31am	43
10:01am	53
10:31am	48
11:01am	48
11:31am	60
12:01pm	50
12:31pm	52
1:01pm	60
1:31pm	51
2:01pm	52
2:31pm	52
3:01pm	52
3:31pm	50
4:01pm	56
4:31pm	51

Min. O₃8:31am

Max. O₃8:31pm

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 Century Compound

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Century Compound?

The current real-time O₃ level in Century Compound is 51ppb (Moderate). This was last updated 2026-08-11 16:31 (Local Time).

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

The best O₃ level was 35 ppb (Good) at 8:31 AM (Local Time) during the last 24 hours.

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

The worst O₃ level was 65 ppb (Moderate) at 8:31 PM, Aug 10, 2026 (Local Time) during the last 24 hours.

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

The O₃ levels in Century Compound have been fluctuating throughout the last 24 hours. The levels have increased by highest 65 ppb at 8:31 PM, Aug 10, 2026 (Local Time), lowest 35 ppb at 8:31 AM (Local Time).

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

Current O₃ levels are acceptable; however, some pollutants may be a concern for a small number of sensitive individuals.