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Current air quality index in Montclair, California today

Stay updated with real-time air quality in Montclair, California 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)

33

Good

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Montclair, California

Last updated: ... (Local time)

Common air pollutants in Montclair, California

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter2.5 (PM2.5)

5.65 μg/m³

0

12.1

35.5

55.5

250.5

500.5+

Particulate Matter10 (PM10)

23.14 μg/m³

0

55

155

255

425

605+

Ozone (O3)

34.92 ppb

0

55

71

86

201

201+

Sulfur Dioxide (SO2)

0.47 ppb

0

36

76

186

605

1005+

Nitrogen Dioxide (NO2)

14.11 ppb

0

54

101

361

1250

2050+

Carbon Monoxide (CO)

0.20 ppm

0

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Real-time air quality map: Monitor AQI near Montclair, California




How accurate is California, USA air quality data?

The air quality data for California, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.


Frequently asked questions

How frequently does the air quality data for Montclair, California get updated?

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Air quality updates for Montclair, California are available every hour.


What time in the past 24 hours saw the poorest air quality in Montclair, California?

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Montclair, California experienced its worst air quality at 06:00:00, 2025-07-24.


When was air quality in Montclair, California the best over the past 24 hours?

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The best air quality in Montclair, California was observed at 12:00:00 on 2025-07-24.


What is the air quality in Montclair, California right now?

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The air quality in Montclair, California right now is Moderate, with an AQI of 54.


What pollutant is most frequently found in Montclair, California?

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In Montclair, California, O3 is the most frequently found pollutant.


What can I do if the air quality in Montclair, California is poor?

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When air quality in Montclair, California is compromised, staying indoors and wearing a mask can reduce health risks.


What is the PM2.5 concentration in Montclair, California right now?

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Montclair, California currently has a PM2.5 concentration of 7.662 μg/m3.


What is the current level of PM10 in Montclair, California?

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Montclair, California currently has a PM10 concentration of 37.028 μg/m3.


What is the current level of carbon monoxide (CO) in Montclair, California?

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The current carbon monoxide (CO) level in Montclair, California is 0.199 ppm.


What is the current level of sulfur dioxide (SO2) in Montclair, California?

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The current sulfur dioxide (SO2) concentration in Montclair, California is 0.496 ppb.


What is the current level of ozone (O3) in Montclair, California?

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Montclair, California currently has an ozone (O3) concentration of 55.713 ppm.


What is the current level of nitrogen dioxide (NO2) in Montclair, California?

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The current level of nitrogen dioxide (NO2) in Montclair, California is 12.659 ppb.


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