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)
49
Good
Montclair, California
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.74 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.29 μg/m³
0
55
155
255
425
605+
34.30 ppb
0
55
71
86
201
201+
0.49 ppb
0
36
76
186
605
1005+
14.44 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Montclair, California
Scroll To Air Quality MapLoading...
AQI 44
Good
8.21μg/m³
PM2.5
18.11μg/m³
PM10
29.49ppb
O3
0.58ppb
SO2
11.92ppb
NO2
0.30ppm
CO
AQI 49
Good
9.08μg/m³
PM2.5
27.80μg/m³
PM10
29.91ppb
O3
0.58ppb
SO2
21.51ppb
NO2
0.29ppm
CO
AQI 49
Good
8.78μg/m³
PM2.5
26.75μg/m³
PM10
29.59ppb
O3
0.60ppb
SO2
19.11ppb
NO2
0.29ppm
CO
AQI 44
Good
8.16μg/m³
PM2.5
25.17μg/m³
PM10
30.77ppb
O3
0.60ppb
SO2
13.80ppb
NO2
0.30ppm
CO
AQI 49
Good
9.03μg/m³
PM2.5
27.26μg/m³
PM10
30.13ppb
O3
0.59ppb
SO2
20.11ppb
NO2
0.29ppm
CO
AQI 49
Good
8.99μg/m³
PM2.5
21.39μg/m³
PM10
29.99ppb
O3
0.57ppb
SO2
8.46ppb
NO2
0.30ppm
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 07:00:00, 2026-02-12.
The best air quality in Montclair, California was observed at 02:00:00 on 2026-02-12.
The air quality in Montclair, California right now is Good, with an AQI of 49.
In Montclair, California, PM2.5 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 8.74 μg/m3.
Montclair, California currently has a PM10 concentration of 23.285 μg/m3.
The current carbon monoxide (CO) level in Montclair, California is 0.291 ppm.
The current sulfur dioxide (SO2) concentration in Montclair, California is 0.495 ppb.
Montclair, California currently has an ozone (O3) concentration of 34.3 ppm.
The current level of nitrogen dioxide (NO2) in Montclair, California is 14.44 ppb.
All Rights Reserved © Ambee Inc. 2025