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Haarlem Carbon Monoxide (CO) Level

Noord Holland, Netherlands

Carbon Monoxide (CO)

196ppb

Good

Last Updated: 2026-08-04 18:51:01 (Local Time)

Map

Haarlem

Good

08330

Moderate

16670

Poor

25000

Unhealthy

33330

Severe

41670

Hazardous

50000+

What is the Current CO Level?
Haarlem

The current CO level in Haarlem based on the average air quality level across the city is 196 ppb, making it healthy and safe for everyone.

17.8xBelow

The current CO level in Haarlem is 17.8x Below the recommended WHO guideline of 3490 ppb.

AQI Graph

Historic Air Quality Graph of Carbon Monoxide (CO)
Haarlem

24 Hours

Haarlem

CO (ppb)

03-08-2026Time04-08-2026

Time	Haarlem
7:01pm	181
7:31pm	184
8:01pm	186
8:31pm	183
9:01pm	189
9:31pm	185
10:01pm	184
10:31pm	186
11:01pm	186
11:31pm	187
12:01am	188
12:31am	189
1:01am	188
1:31am	183
2:01am	184
2:31am	190
3:01am	190
3:31am	190
4:01am	197
4:31am	185
5:01am	188
5:31am	190
6:01am	262
6:31am	268
7:01am	270
7:31am	264
8:01am	261
8:31am	256
9:01am	262
9:31am	192
10:01am	192
10:31am	187
11:01am	196
11:31am	200
12:01pm	194
12:31pm	202
1:01pm	197
1:31pm	194
2:01pm	190
2:31pm	198
3:01pm	193
3:31pm	199
4:01pm	192
4:31pm	189
5:01pm	190
5:31pm	185
6:01pm	194
6:31pm	199
7:01pm	201

181

Min. CO7:01pm

270

Max. CO7:01am

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 Haarlem

Frequently Asked Questions About Air Quality

1. What is the current CO level in Haarlem?

The current real-time CO level in Haarlem is 196ppb (Good). This was last updated 2026-08-04 18:51:01 (Local Time).

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

The best CO level was 181 ppb (Good) at 7:01 PM, Aug 3, 2026 (Local Time) during the last 24 hours.

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

The worst CO level was 270 ppb (Good) at 7:01 AM (Local Time) during the last 24 hours.

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

The CO levels in Haarlem have been fluctuating throughout the last 24 hours. The levels have increased by highest 270 ppb at 7:01 AM (Local Time), lowest 181 ppb at 7:01 PM, Aug 3, 2026 (Local Time).

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

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