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)
16
Good
California, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.94 μg/m³
0
55
155
255
425
605+
12.96 ppb
0
55
71
86
201
201+
0.60 ppb
0
36
76
186
605
1005+
4.16 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
California, Maryland
California, Maryland
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AQI 16
Good
2.91μg/m³
PM2.5
8.82μg/m³
PM10
13.22ppb
O3
0.61ppb
SO2
4.24ppb
NO2
0.26ppm
CO
AQI 11
Good
2.40μg/m³
PM2.5
10.66μg/m³
PM10
10.64ppb
O3
0.55ppb
SO2
4.52ppb
NO2
0.26ppm
CO
AQI 27
Good
5.50μg/m³
PM2.5
21.80μg/m³
PM10
8.52ppb
O3
0.50ppb
SO2
5.08ppb
NO2
0.27ppm
CO
AQI 27
Good
5.11μg/m³
PM2.5
21.98μg/m³
PM10
7.69ppb
O3
0.46ppb
SO2
2.56ppb
NO2
0.27ppm
CO
AQI 27
Good
5.16μg/m³
PM2.5
21.99μg/m³
PM10
7.81ppb
O3
0.45ppb
SO2
6.71ppb
NO2
0.27ppm
CO
AQI 27
Good
5.19μg/m³
PM2.5
22.72μg/m³
PM10
8.57ppb
O3
0.47ppb
SO2
2.56ppb
NO2
0.27ppm
CO
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.
Source: Ambee Data Sources
The air quality information for California, Maryland is updated every hour for accuracy.
In the past 24 hours, the air quality in California, Maryland was at its worst at 07:00:00 on 2026-09-07.
In the last 24 hours, the best air quality in California, Maryland was observed at 12:00:00 on 2026-09-07.
As of now, the AQI in California, Maryland is 16, indicating Good conditions.
California, Maryland air has the highest levels of PM2.5.
Poor air quality in California, Maryland means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in California, Maryland are currently 3.481 μg/m3.
The PM10 concentration in California, Maryland is 14.938 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in California, Maryland is 0.263 ppm.
Currently, California, Maryland has a sulfur dioxide (SO2) concentration of 0.603 ppb.
The current ozone (O3) level in California, Maryland at the moment is 12.958 ppm.
Nitrogen dioxide (NO2) level in California, Maryland at the moment is 4.159 ppb.
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