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
11.92 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
56.77 μg/m³
0
55
155
255
425
605+
3.11 ppb
0
55
71
86
201
201+
0.49 ppb
0
36
76
186
605
1005+
26.59 ppb
0
54
101
361
1250
2050+
0.60 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Adelphi, Maryland
Adelphi, Maryland
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AQI 52
Moderate
10.46μg/m³
PM2.5
44.87μg/m³
PM10
2.52ppb
O3
0.53ppb
SO2
28.36ppb
NO2
0.63ppm
CO
AQI 54
Moderate
11.02μg/m³
PM2.5
48.33μg/m³
PM10
1.99ppb
O3
0.50ppb
SO2
27.36ppb
NO2
0.69ppm
CO
AQI 52
Moderate
10.30μg/m³
PM2.5
43.35μg/m³
PM10
2.29ppb
O3
0.53ppb
SO2
28.63ppb
NO2
0.57ppm
CO
AQI 54
Moderate
10.52μg/m³
PM2.5
45.60μg/m³
PM10
2.10ppb
O3
0.50ppb
SO2
27.24ppb
NO2
0.61ppm
CO
AQI 52
Moderate
9.56μg/m³
PM2.5
41.26μg/m³
PM10
3.06ppb
O3
0.53ppb
SO2
27.57ppb
NO2
0.57ppm
CO
AQI 52
Moderate
10.27μg/m³
PM2.5
43.16μg/m³
PM10
2.30ppb
O3
0.53ppb
SO2
28.63ppb
NO2
0.56ppm
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 03:00:00 on 2025-12-13.
In the last 24 hours, the best air quality in Adelphi, Maryland was observed at 02:00:00 on 2025-12-12.
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 11.923 μg/m3.
The PM10 concentration in Adelphi, Maryland is 56.772 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Adelphi, Maryland is 0.6 ppm.
Currently, Adelphi, Maryland has a sulfur dioxide (SO2) concentration of 0.492 ppb.
The current ozone (O3) level in Adelphi, Maryland at the moment is 3.108 ppm.
Nitrogen dioxide (NO2) level in Adelphi, Maryland at the moment is 26.59 ppb.
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