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Live air quality index in California, Maryland today

Stay updated with real-time air quality in California, Maryland featuring accurate data on AQI, PM2.5, PM10, O3, NO2, SO2, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

27

Good

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California, Maryland

Last updated: ... (Local time)

Major air pollutants in California, Maryland

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

5.30 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

21.25 μg/m³

0

55

155

255

425

605+

Ozone (O3)

18.06 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.23 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

1.17 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

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California, Maryland

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California, Maryland air quality map: Stay updated on AQI near you




How accurate is Maryland, USA air quality data?

Air quality and pollutant data for Maryland, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.


Frequently asked questions

How often is air quality information updated for California, Maryland?

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The air quality information for California, Maryland is updated every hour for accuracy.


What time in the last 24 hours was the air quality in California, Maryland at its worst?

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In the past 24 hours, the air quality in California, Maryland was at its worst at 11:00:00 on 2025-07-29.


When did California, Maryland experience the best air quality in the last 24 hours?

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In the last 24 hours, the best air quality in California, Maryland was observed at 03:00:00 on 2025-07-29.


What is the AQI in California, Maryland right now?

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As of now, the AQI in California, Maryland is 64, indicating Moderate conditions.


What is the most common type of pollution in California, Maryland?

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California, Maryland air has the highest levels of O3.


What should I do in case of poor air quality in California, Maryland?

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Poor air quality in California, Maryland means it's advisable to stay indoors and wear a mask for your protection.


What is the PM2.5 level in California, Maryland at the moment?

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PM2.5 levels in California, Maryland are currently 9.747 μg/m3.


What is the PM10 level in California, Maryland at the moment?

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The PM10 concentration in California, Maryland is 34.359 μg/m3 at the moment.


What is the carbon monoxide (CO) level in California, Maryland at the moment?

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The current carbon monoxide (CO) concentration in California, Maryland is 0.319 ppm.


What is the sulfur dioxide (SO2) level in California, Maryland at the moment?

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Currently, California, Maryland has a sulfur dioxide (SO2) concentration of 0.365 ppb.


What is the ozone (O3) level in California, Maryland at the moment?

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The current ozone (O3) level in California, Maryland at the moment is 58.611 ppm.


What is the nitrogen dioxide (NO2) level in California, Maryland at the moment?

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Nitrogen dioxide (NO2) level in California, Maryland at the moment is 2.781 ppb.


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