Stay updated with real-time air quality in Adelphi, 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)
56
Moderate
Adelphi, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.29 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
51.50 μg/m³
0
55
155
255
425
605+
4.28 ppb
0
55
71
86
201
201+
0.75 ppb
0
36
76
186
605
1005+
15.54 ppb
0
54
101
361
1250
2050+
0.43 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Adelphi, Maryland
Adelphi, Maryland
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AQI 60
Moderate
14.02μg/m³
PM2.5
68.39μg/m³
PM10
3.29ppb
O3
0.72ppb
SO2
15.68ppb
NO2
0.43ppm
CO
AQI 60
Moderate
14.43μg/m³
PM2.5
67.50μg/m³
PM10
2.23ppb
O3
0.73ppb
SO2
15.23ppb
NO2
0.43ppm
CO
AQI 62
Moderate
14.63μg/m³
PM2.5
73.06μg/m³
PM10
3.71ppb
O3
0.73ppb
SO2
15.39ppb
NO2
0.44ppm
CO
AQI 62
Moderate
14.82μg/m³
PM2.5
70.38μg/m³
PM10
2.64ppb
O3
0.74ppb
SO2
15.28ppb
NO2
0.45ppm
CO
AQI 60
Moderate
13.87μg/m³
PM2.5
66.64μg/m³
PM10
3.29ppb
O3
0.72ppb
SO2
16.58ppb
NO2
0.45ppm
CO
AQI 62
Moderate
14.66μg/m³
PM2.5
73.28μg/m³
PM10
3.75ppb
O3
0.74ppb
SO2
15.38ppb
NO2
0.45ppm
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 Adelphi, Maryland is updated every hour for accuracy.
In the past 24 hours, the air quality in Adelphi, Maryland was at its worst at 08:00:00 on 2025-12-07.
In the last 24 hours, the best air quality in Adelphi, Maryland was observed at 10:00:00 on 2025-12-06.
As of now, the AQI in Adelphi, Maryland is 56, indicating Moderate conditions.
Adelphi, Maryland air has the highest levels of PM2.5.
Poor air quality in Adelphi, Maryland means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Adelphi, Maryland are currently 12.293 μg/m3.
The PM10 concentration in Adelphi, Maryland is 51.503 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Adelphi, Maryland is 0.427 ppm.
Currently, Adelphi, Maryland has a sulfur dioxide (SO2) concentration of 0.753 ppb.
The current ozone (O3) level in Adelphi, Maryland at the moment is 4.28 ppm.
Nitrogen dioxide (NO2) level in Adelphi, Maryland at the moment is 15.537 ppb.
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