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Johannesburg Carbon Monoxide (CO) Level

Gauteng, South Africa

Carbon Monoxide (CO)

213ppb

Good

Last Updated: 2026-08-16 19:01 (Local Time)

Map

Johannesburg

Good

08330

Moderate

16670

Poor

25000

Unhealthy

33330

Severe

41670

Hazardous

50000+

What is the Current CO Level?
Johannesburg

The current CO level in Johannesburg based on the average air quality level across the city is 213 ppb, making it healthy and safe for everyone.

16.3xBelow

The current CO level in Johannesburg is 16.3x Below the recommended WHO guideline of 3490 ppb.

AQI Graph

Historic Air Quality Graph of Carbon Monoxide (CO)
Johannesburg

24 Hours

Johannesburg

CO (ppb)

15-08-2026Time16-08-2026

Time	Johannesburg
7:31pm	288
8:01pm	302
8:31pm	287
9:01pm	184
9:31pm	180
10:01pm	449
10:31pm	470
11:01pm	462
11:31pm	588
12:01am	612
12:31am	585
1:01am	550
1:31am	484
2:01am	506
2:31am	610
3:01am	650
3:31am	618
4:01am	478
4:31am	466
5:01am	473
5:31am	490
6:01am	476
6:31am	502
7:01am	474
7:31am	534
8:01am	452
8:31am	439
9:01am	629
9:31am	628
10:01am	594
10:31am	581
11:01am	593
11:31am	469
12:01pm	438
12:31pm	240
1:01pm	208
1:31pm	176
2:01pm	109
2:31pm	106
3:01pm	119
3:31pm	124
4:01pm	120
4:31pm	81
5:01pm	78
5:31pm	82
6:01pm	82
6:31pm	81
7:01pm	213

Min. CO5:01pm

650

Max. CO3:01am

Want air quality data?

Do you know CO emissions in the atmosphere can affect the greenhouse gas level? It is because CO emission causes global and climate changes in the atmosphere by increasing or changing the sea and land temperatures. It makes changes in ecosystems and storm activity and affects other weather events..

Uncovering the Sources of Carbon Monoxide (CO): Where Does It Come From?

Biomass burning

Burning wood, crop residues, and organic materials.

Power plants

Emissions from burning fossil fuels in power plants.

Fireplaces

Emissions from burning wood or coal in fireplaces.

Road traffic

Overall contributions from vehicles exhaust.

Vehicles engines

Exhaust emissions from cars and trucks.

Short-Term CO Exposure Impacts

Fatigue

Feeling tiredness or lack of energy.

Chest pain

Discomfort or pain in the chest area.

Confusion

Frequent difficulty in thinking clearly.

Flu-like symptoms

Symptoms like headache and nausea.

Weakness

Frequent weakness or lack of strength.

Why you should care about Carbon Monoxide (CO)?

Know More About CO Sensor

Air Quality FAQs
at Johannesburg

Frequently Asked Questions About Air Quality

1. What is the current CO level in Johannesburg?

The current real-time CO level in Johannesburg is 213ppb (Good). This was last updated 2026-08-16 19:01 (Local Time).

2. When was the best CO level in Johannesburg in the last 24 hours?

The best CO level was 78 ppb (Good) at 5:01 PM (Local Time) during the last 24 hours.

3. When was the worst CO level in Johannesburg in the last 24 hours?

The worst CO level was 650 ppb (Good) at 3:01 AM (Local Time) during the last 24 hours.

4. What is the current trend of CO levels in Johannesburg during last 24 hours?

The CO levels in Johannesburg have been fluctuating throughout the last 24 hours. The levels have increased by highest 650 ppb at 3:01 AM (Local Time), lowest 78 ppb at 5:01 PM (Local Time).

5. What actions are recommended as per the current CO level in Johannesburg?

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