Stay updated with real-time air quality in Severn, 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)
49
Good
Severn, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.86 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.16 μg/m³
0
55
155
255
425
605+
53.06 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
2.37 ppb
0
54
101
361
1250
2050+
0.14 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Severn, Maryland
Severn, Maryland
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AQI 50
Good
3.53μg/m³
PM2.5
15.98μg/m³
PM10
54.20ppb
O3
0.40ppb
SO2
2.48ppb
NO2
0.13ppm
CO
AQI 61
Moderate
4.08μg/m³
PM2.5
15.74μg/m³
PM10
58.17ppb
O3
0.35ppb
SO2
2.55ppb
NO2
0.16ppm
CO
AQI 47
Good
3.98μg/m³
PM2.5
17.01μg/m³
PM10
51.35ppb
O3
0.27ppb
SO2
2.81ppb
NO2
0.16ppm
CO
AQI 47
Good
4.01μg/m³
PM2.5
16.99μg/m³
PM10
50.94ppb
O3
0.26ppb
SO2
3.06ppb
NO2
0.16ppm
CO
AQI 47
Good
4.04μg/m³
PM2.5
17.07μg/m³
PM10
50.99ppb
O3
0.27ppb
SO2
3.00ppb
NO2
0.16ppm
CO
AQI 48
Good
3.31μg/m³
PM2.5
14.31μg/m³
PM10
52.16ppb
O3
0.36ppb
SO2
3.24ppb
NO2
0.13ppm
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 Severn, Maryland is updated every hour for accuracy.
In the past 24 hours, the air quality in Severn, Maryland was at its worst at 10:00:00 on 2026-07-23.
In the last 24 hours, the best air quality in Severn, Maryland was observed at 10:00:00 on 2026-07-23.
As of now, the AQI in Severn, Maryland is 49, indicating Good conditions.
Severn, Maryland air has the highest levels of O3.
Poor air quality in Severn, Maryland means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Severn, Maryland are currently 3.861 μg/m3.
The PM10 concentration in Severn, Maryland is 17.159 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Severn, Maryland is 0.137 ppm.
Currently, Severn, Maryland has a sulfur dioxide (SO2) concentration of 0.351 ppb.
The current ozone (O3) level in Severn, Maryland at the moment is 53.062 ppm.
Nitrogen dioxide (NO2) level in Severn, Maryland at the moment is 2.37 ppb.
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