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
Montclair, California
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
5.65 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.14 μg/m³
0
55
155
255
425
605+
34.92 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
14.11 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Montclair, California
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AQI 50
Good
7.45μg/m³
PM2.5
33.61μg/m³
PM10
53.69ppb
O3
0.44ppb
SO2
10.01ppb
NO2
0.20ppm
CO
AQI 48
Good
7.09μg/m³
PM2.5
33.05μg/m³
PM10
52.49ppb
O3
0.45ppb
SO2
17.15ppb
NO2
0.19ppm
CO
AQI 49
Good
6.95μg/m³
PM2.5
34.22μg/m³
PM10
53.17ppb
O3
0.45ppb
SO2
15.63ppb
NO2
0.19ppm
CO
AQI 50
Good
7.51μg/m³
PM2.5
33.71μg/m³
PM10
53.98ppb
O3
0.44ppb
SO2
6.90ppb
NO2
0.20ppm
CO
AQI 48
Good
7.21μg/m³
PM2.5
33.53μg/m³
PM10
52.37ppb
O3
0.45ppb
SO2
15.29ppb
NO2
0.19ppm
CO
AQI 50
Good
7.51μg/m³
PM2.5
33.69μg/m³
PM10
53.93ppb
O3
0.44ppb
SO2
7.98ppb
NO2
0.20ppm
CO
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.
Source: Ambee Data Sources
Air quality updates for Montclair, California are available every hour.
Montclair, California experienced its worst air quality at 06:00:00, 2025-07-24.
The best air quality in Montclair, California was observed at 12:00:00 on 2025-07-24.
The air quality in Montclair, California right now is Moderate, with an AQI of 54.
In Montclair, California, O3 is the most frequently found pollutant.
When air quality in Montclair, California is compromised, staying indoors and wearing a mask can reduce health risks.
Montclair, California currently has a PM2.5 concentration of 7.662 μg/m3.
Montclair, California currently has a PM10 concentration of 37.028 μg/m3.
The current carbon monoxide (CO) level in Montclair, California is 0.199 ppm.
The current sulfur dioxide (SO2) concentration in Montclair, California is 0.496 ppb.
Montclair, California currently has an ozone (O3) concentration of 55.713 ppm.
The current level of nitrogen dioxide (NO2) in Montclair, California is 12.659 ppb.
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