Live

Colombo Nitrogen Dioxide (NO2) Level

Western, Sri Lanka

location image
NO2's Icon
Nitrogen Dioxide (NO2)

7ppb



Good

Last Updated: 2024-12-13 09:28:07 PM

Good NO2 level in Colombo
Map

Colombo

Good
040
Moderate
80
Poor
180
Unhealthy
190
Severe
400
Hazardous
500+

What is the Current NO2 Level?

Colombo

The current NO2 level in Colombo based on the average air quality level across the city is 7 ppb, making it healthy and safe for everyone.


1.9xBelow

The current NO2 level in Colombo is 1.9x Below the recommended WHO guideline of 13.29 ppb.

AQI Graph

Historical Air Quality Data

Colombo

Colombo

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.

PM Image

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

Explosives and welding

Explosives and welding

Release during high-temperature processes.
Lighting

Lighting

Emissions from certain types of lighting.
Power-generating plants

Power-generating plants

Emissions from fossil fuels burning for electricity.
Road traffic

Road traffic

Overall contributions from vehicles on the road.
Motor vehicles

Motor vehicles

Exhaust gases from cars and trucks.

Short-Term NO2 Exposure Impacts

Coughing

Coughing

Regular cough due to airways irritations.
Wheezing

Wheezing

More whistling sound while breathing,
Difficulty in breathing

Difficulty in breathing

Shortness of breath and reduced lung function.
Reduce smelling ability

Reduce smelling ability

Decreased sense of smell due to irritation.

Health Advice Based on Current NO2 Level In

Colombo

  • Air Purifier
    Air PurifierTurn Off
  • Car Filter
    Car FilterAdvisable
  • N95 Mask
    N95 MaskAdvisable
  • Stay Indoor
    Stay IndoorAdvisable

As per the current NO2, turn off the air purifier.

Get an Air Purifier

Air Quality FAQs

at Colombo

Frequently Asked Questions About Air Quality

What is the current NO2 level in Colombo?

The current real-time NO2 level in Colombo is 7 ppb (Good) due to recent rainfall by 0.49mm/hr. This was last updated 2024-12-13 09:28:07 PM.

When was the best NO2 level in Colombo in the last 24 hours?

The best NO2 level was 4 ppb (Good) at 11:13 PM, Dec 12, 2024 during the last 24 hours.

When was the worst NO2 level in Colombo in the last 24 hours?

The worst NO2 level was 9 ppb (Good) at 8:13 PM during the last 24 hours.

What is the current trend of NO2 levels in Colombo during last 24 hours?

The NO2 levels in Colombo have been fluctuating throughout the last 24 hours. The levels have increased by highest 9 ppb at 8:13 PM, lowest 4 ppb at 11:13 PM, Dec 12, 2024.

What actions are recommended as per the current NO2 level in Colombo?

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