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Bethlehem Nitrogen Dioxide (NO₂) Level

Pennsylvania, United States

Nitrogen Dioxide (NO₂)

33ppb

Good

Last Updated: 2026-06-05 00:51 (Local Time)

Map

Bethlehem

Good

040

Moderate

Poor

180

Unhealthy

190

Severe

400

Hazardous

500+

What is the Current NO₂ Level?
Bethlehem

The current NO₂ level in Bethlehem based on the average air quality level across the city is 33 ppb, making it healthy and safe for everyone.

2.4xAbove

The current NO₂ level in Bethlehem is 2.4x Above the recommended WHO guideline of 13.29 ppb.

AQI Graph

Historic Air Quality Graph of Nitrogen Dioxide (NO₂)
Bethlehem

24 Hours

NO₂

Bethlehem

NO₂ (ppb)

04-06-2026Time05-06-2026

Time	Bethlehem
1:01am	29
1:31am	32
2:01am	28
2:31am	29
3:01am	24
3:31am	25
4:01am	25
4:31am	23
5:01am	20
5:31am	22
6:01am	17
6:31am	18
7:01am	17
7:31am	17
8:01am	14
8:31am	17
9:01am	21
9:31am	20
10:01am	15
10:31am	14
11:01am	7
11:31am	7
12:01pm	10
12:31pm	10
1:01pm	6
1:31pm	6
2:01pm	6
2:31pm	6
3:01pm	6
3:31pm	6
4:01pm	6
4:31pm	6
5:01pm	5
5:31pm	6
6:01pm	6
6:31pm	5
7:01pm	6
7:31pm	7
8:01pm	7
8:31pm	6
9:01pm	7
9:31pm	6
10:01pm	22
10:31pm	21
11:01pm	36
11:31pm	35
12:01am	40
12:31am	39

Min. NO₂5:01pm

Max. NO₂12:01am

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 Bethlehem

Frequently Asked Questions About Air Quality

1. What is the current NO₂ level in Bethlehem?

The current real-time NO₂ level in Bethlehem is 33ppb (Good). This was last updated 2026-06-05 00:51 (Local Time).

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

The best NO₂ level was 5 ppb (Good) at 5:01 PM, Jun 4, 2026 (Local Time) during the last 24 hours.

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

The worst NO₂ level was 40 ppb (Good) at 12:01 AM (Local Time) during the last 24 hours.

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

The NO₂ levels in Bethlehem have been fluctuating throughout the last 24 hours. The levels have increased by highest 40 ppb at 12:01 AM (Local Time), lowest 5 ppb at 5:01 PM, Jun 4, 2026 (Local Time).

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

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