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)
32
Good
California, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.46 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.47 μg/m³
0
55
155
255
425
605+
35.15 ppb
0
55
71
86
201
201+
0.48 ppb
0
36
76
186
605
1005+
3.12 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
California, Maryland
California, Maryland
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AQI 31
Good
3.12μg/m³
PM2.5
13.16μg/m³
PM10
33.25ppb
O3
0.38ppb
SO2
2.90ppb
NO2
0.10ppm
CO
AQI 33
Good
3.52μg/m³
PM2.5
10.97μg/m³
PM10
35.98ppb
O3
0.11ppb
SO2
3.14ppb
NO2
0.10ppm
CO
AQI 33
Good
2.05μg/m³
PM2.5
8.63μg/m³
PM10
35.69ppb
O3
0.39ppb
SO2
2.90ppb
NO2
0.10ppm
CO
AQI 34
Good
1.53μg/m³
PM2.5
5.50μg/m³
PM10
37.07ppb
O3
0.34ppb
SO2
3.18ppb
NO2
0.10ppm
CO
AQI 35
Good
1.48μg/m³
PM2.5
6.15μg/m³
PM10
37.54ppb
O3
0.32ppb
SO2
3.43ppb
NO2
0.10ppm
CO
AQI 35
Good
2.08μg/m³
PM2.5
8.68μg/m³
PM10
37.66ppb
O3
0.36ppb
SO2
2.96ppb
NO2
0.10ppm
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 01:00:00 on 2026-10-22.
In the last 24 hours, the best air quality in California, Maryland was observed at 12:00:00 on 2026-10-22.
As of now, the AQI in California, Maryland is 32, indicating Good conditions.
California, Maryland air has the highest levels of O3.
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 2.458 μg/m3.
The PM10 concentration in California, Maryland is 10.473 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in California, Maryland is 0.1 ppm.
Currently, California, Maryland has a sulfur dioxide (SO2) concentration of 0.481 ppb.
The current ozone (O3) level in California, Maryland at the moment is 35.152 ppm.
Nitrogen dioxide (NO2) level in California, Maryland at the moment is 3.124 ppb.
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