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)
69
Moderate
Severn, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
18.73 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
71.56 μg/m³
0
55
155
255
425
605+
5.05 ppb
0
55
71
86
201
201+
0.69 ppb
0
36
76
186
605
1005+
15.38 ppb
0
54
101
361
1250
2050+
0.40 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Severn, Maryland
Severn, Maryland
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AQI 64
Moderate
16.00μg/m³
PM2.5
76.17μg/m³
PM10
4.88ppb
O3
0.51ppb
SO2
15.45ppb
NO2
0.36ppm
CO
AQI 73
Moderate
20.56μg/m³
PM2.5
98.93μg/m³
PM10
5.12ppb
O3
0.63ppb
SO2
13.33ppb
NO2
0.40ppm
CO
AQI 73
Moderate
20.66μg/m³
PM2.5
67.31μg/m³
PM10
4.55ppb
O3
0.79ppb
SO2
15.34ppb
NO2
0.40ppm
CO
AQI 73
Moderate
20.66μg/m³
PM2.5
67.31μg/m³
PM10
4.55ppb
O3
0.79ppb
SO2
15.34ppb
NO2
0.40ppm
CO
AQI 71
Moderate
20.04μg/m³
PM2.5
70.84μg/m³
PM10
5.22ppb
O3
0.85ppb
SO2
16.09ppb
NO2
0.40ppm
CO
AQI 62
Moderate
15.18μg/m³
PM2.5
66.65μg/m³
PM10
5.71ppb
O3
0.61ppb
SO2
15.86ppb
NO2
0.36ppm
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 06:00:00 on 2025-12-07.
In the last 24 hours, the best air quality in Severn, Maryland was observed at 11:00:00 on 2025-12-06.
As of now, the AQI in Severn, Maryland is 69, indicating Moderate conditions.
Severn, Maryland air has the highest levels of PM2.5.
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 18.733 μg/m3.
The PM10 concentration in Severn, Maryland is 71.559 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Severn, Maryland is 0.397 ppm.
Currently, Severn, Maryland has a sulfur dioxide (SO2) concentration of 0.693 ppb.
The current ozone (O3) level in Severn, Maryland at the moment is 5.049 ppm.
Nitrogen dioxide (NO2) level in Severn, Maryland at the moment is 15.381 ppb.
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