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)
38
Good
California, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.15 μg/m³
0
55
155
255
425
605+
34.74 ppb
0
55
71
86
201
201+
0.37 ppb
0
36
76
186
605
1005+
7.51 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
California, Maryland
California, Maryland
Scroll To Air Quality MapLoading...
AQI 38
Good
7.29μg/m³
PM2.5
19.45μg/m³
PM10
34.10ppb
O3
0.40ppb
SO2
4.95ppb
NO2
0.28ppm
CO
AQI 44
Good
8.03μg/m³
PM2.5
35.24μg/m³
PM10
37.55ppb
O3
0.21ppb
SO2
5.32ppb
NO2
0.28ppm
CO
AQI 29
Good
5.00μg/m³
PM2.5
15.36μg/m³
PM10
30.79ppb
O3
0.52ppb
SO2
9.52ppb
NO2
0.30ppm
CO
AQI 33
Good
5.05μg/m³
PM2.5
19.68μg/m³
PM10
35.65ppb
O3
0.53ppb
SO2
10.42ppb
NO2
0.30ppm
CO
AQI 33
Good
5.00μg/m³
PM2.5
19.55μg/m³
PM10
35.98ppb
O3
0.49ppb
SO2
10.69ppb
NO2
0.30ppm
CO
AQI 33
Good
5.28μg/m³
PM2.5
19.93μg/m³
PM10
35.55ppb
O3
0.62ppb
SO2
11.31ppb
NO2
0.30ppm
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 08:00:00 on 2026-06-07.
In the last 24 hours, the best air quality in California, Maryland was observed at 04:00:00 on 2026-06-08.
As of now, the AQI in California, Maryland is 38, 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 6.841 μg/m3.
The PM10 concentration in California, Maryland is 19.454 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in California, Maryland is 0.285 ppm.
Currently, California, Maryland has a sulfur dioxide (SO2) concentration of 0.404 ppb.
The current ozone (O3) level in California, Maryland at the moment is 34.145 ppm.
Nitrogen dioxide (NO2) level in California, Maryland at the moment is 4.965 ppb.
All Rights Reserved © Ambee Inc. 2025