Live

Birganj Ozone (O₃) Level

Narayani, Nepal

Ozone (O₃)

57ppb

Moderate

Last Updated: 2026-07-29 05:26:02 (Local Time)

Map

Birganj

Good

050

Moderate

100

Poor

168

Unhealthy

208

Severe

748

Hazardous

1250+

What is the Current O₃ Level?
Birganj

The current O₃ level in Birganj based on the average air quality level across the city is 57 ppb making it acceptable, but sensitive individuals should be cautious.

1.1xAbove

The current O₃ level in Birganj is 1.1x Above the recommended WHO guideline of 50.96 ppb.

AQI Graph

Historic Air Quality Graph of Ozone (O₃)
Birganj

24 Hours

O₃

Birganj

O₃ (ppb)

28-07-2026Time29-07-2026

Time	Birganj
5:46am	52
6:16am	52
6:46am	59
7:16am	59
7:46am	61
8:16am	62
8:46am	59
9:16am	56
9:46am	30
10:16am	30
10:46am	28
11:16am	29
11:46am	30
12:16pm	32
12:46pm	28
1:16pm	31
1:46pm	27
2:16pm	28
2:46pm	29
3:16pm	30
3:46pm	28
4:16pm	43
4:46pm	42
5:16pm	44
5:46pm	43
6:16pm	46
6:46pm	41
7:16pm	46
7:46pm	46
8:16pm	57
8:46pm	61
9:16pm	62
9:46pm	60
10:16pm	60
10:46pm	57
11:16pm	52
11:46pm	55
12:16am	57
12:46am	55
1:16am	57
1:46am	57
2:16am	59
2:46am	53
3:16am	58
3:46am	61
4:16am	61
4:46am	58
5:16am	61

Min. O₃1:46pm

Max. O₃8:16am

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 Birganj

Frequently Asked Questions About Air Quality

1. What is the current O₃ level in Birganj?

The current real-time O₃ level in Birganj is 57ppb (Moderate). This was last updated 2026-07-29 05:26:02 (Local Time).

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

The best O₃ level was 27 ppb (Good) at 1:46 PM (Local Time) during the last 24 hours.

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

The worst O₃ level was 62 ppb (Moderate) at 8:16 AM (Local Time) during the last 24 hours.

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

The O₃ levels in Birganj have been fluctuating throughout the last 24 hours. The levels have increased by highest 62 ppb at 8:16 AM (Local Time), lowest 27 ppb at 1:46 PM (Local Time).

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

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