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Chuen Lung Nitrogen Dioxide (NO₂) Level

Tsuen Wan, Hong Kong, China

Nitrogen Dioxide (NO₂)

37ppb

Good

Last Updated: 2026-08-16 13:41:01 (Local Time)

Map

Chuen Lung

Good

040

Moderate

Poor

180

Unhealthy

190

Severe

400

Hazardous

500+

What is the Current NO₂ Level?
Chuen Lung

The current NO₂ level at Chuen Lung is 37 ppb making it healthy and safe for everyone in the area.

2.7xAbove

The current NO₂ level in Chuen Lung is 2.7x Above the recommended WHO guideline of 13.29 ppb.

AQI Graph

Historic Air Quality Graph of Nitrogen Dioxide (NO₂)
Chuen Lung

24 Hours

NO₂

Chuen Lung

NO₂ (ppb)

15-08-2026Time16-08-2026

Time	Chuen Lung
2:01pm	19
2:31pm	22
3:01pm	25
3:31pm	24
4:01pm	25
4:31pm	29
5:01pm	29
5:31pm	23
6:01pm	25
6:31pm	28
7:01pm	24
7:31pm	29
8:01pm	30
8:31pm	24
9:01pm	25
9:31pm	30
10:01pm	29
10:31pm	29
11:01pm	33
11:31pm	18
12:01am	21
12:31am	20
1:01am	21
1:31am	42
2:01am	42
2:31am	40
3:01am	36
3:31am	33
4:01am	32
4:31am	29
5:01am	29
5:31am	33
6:01am	35
6:31am	30
7:01am	32
7:31am	32
8:01am	30
8:31am	30
9:01am	29
9:31am	34
10:01am	33
10:31am	38
11:01am	39
11:31am	42
12:01pm	42
12:31pm	41
1:01pm	40
1:31pm	33

Min. NO₂11:31pm

Max. NO₂1:31am

Want air quality data?

Do you know NO2 can create impaired atmospheric visibility can increase atmospheric heat? It happens as its concentrations absorb the visible radiation in the atmosphere.

Uncovering the Sources of Nitrogen Dioxide (NO₂): Where Does It Come From?

Explosives and welding

Release during high-temperature processes.

Lighting

Emissions from certain types of lighting.

Power-generating plants

Emissions from fossil fuels burning for electricity.

Road traffic

Overall contributions from vehicles on the road.

Motor vehicles

Exhaust gases from cars and trucks.

Short-Term NO₂ Exposure Impacts

Coughing

Regular cough due to airways irritations.

Wheezing

More whistling sound while breathing,

Difficulty in breathing

Shortness of breath and reduced lung function.

Reduce smelling ability

Decreased sense of smell due to irritation.

Why you should care about Nitrogen Dioxide (NO₂)?

Know More About NO₂ Sensor

Air Quality FAQs
at Chuen Lung

Frequently Asked Questions About Air Quality

1. What is the current NO₂ level in Chuen Lung?

The current real-time NO₂ level in Chuen Lung is 37ppb (Good). This was last updated 2026-08-16 13:41:01 (Local Time).

2. When was the best NO₂ level in Chuen Lung in the last 24 hours?

The best NO₂ level was 18 ppb (Good) at 11:31 PM, Aug 15, 2026 (Local Time) during the last 24 hours.

3. When was the worst NO₂ level in Chuen Lung in the last 24 hours?

The worst NO₂ level was 42 ppb (Moderate) at 1:31 AM (Local Time) during the last 24 hours.

4. What is the current trend of NO₂ levels in Chuen Lung during last 24 hours?

The NO₂ levels in Chuen Lung have been fluctuating throughout the last 24 hours. The levels have increased by highest 42 ppb at 1:31 AM (Local Time), lowest 18 ppb at 11:31 PM, Aug 15, 2026 (Local Time).

5. What actions are recommended as per the current NO₂ level in Chuen Lung?

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