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)
42
Good
Severn, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.83 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.30 μg/m³
0
55
155
255
425
605+
44.61 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
3.96 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Severn, Maryland
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AQI 41
Good
2.89μg/m³
PM2.5
10.37μg/m³
PM10
44.14ppb
O3
0.23ppb
SO2
3.81ppb
NO2
0.16ppm
CO
AQI 42
Good
4.46μg/m³
PM2.5
8.21μg/m³
PM10
44.84ppb
O3
0.23ppb
SO2
5.65ppb
NO2
0.17ppm
CO
AQI 42
Good
3.67μg/m³
PM2.5
15.11μg/m³
PM10
45.17ppb
O3
0.25ppb
SO2
4.05ppb
NO2
0.19ppm
CO
AQI 42
Good
3.68μg/m³
PM2.5
15.41μg/m³
PM10
45.36ppb
O3
0.25ppb
SO2
4.18ppb
NO2
0.19ppm
CO
AQI 43
Good
3.74μg/m³
PM2.5
15.78μg/m³
PM10
45.83ppb
O3
0.25ppb
SO2
4.25ppb
NO2
0.19ppm
CO
AQI 42
Good
3.15μg/m³
PM2.5
12.63μg/m³
PM10
44.63ppb
O3
0.24ppb
SO2
4.23ppb
NO2
0.18ppm
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 12:00:00 on 2026-03-09.
In the last 24 hours, the best air quality in Severn, Maryland was observed at 07:00:00 on 2026-03-09.
As of now, the AQI in Severn, Maryland is 42, 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 3.834 μg/m3.
The PM10 concentration in Severn, Maryland is 16.297 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Severn, Maryland is 0.181 ppm.
Currently, Severn, Maryland has a sulfur dioxide (SO2) concentration of 0.192 ppb.
The current ozone (O3) level in Severn, Maryland at the moment is 44.61 ppm.
Nitrogen dioxide (NO2) level in Severn, Maryland at the moment is 3.964 ppb.
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