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)
44
Good
Adelphi, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.68 μg/m³
0
55
155
255
425
605+
36.95 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
3.93 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Adelphi, Maryland
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AQI 49
Good
8.83μg/m³
PM2.5
19.93μg/m³
PM10
36.66ppb
O3
0.49ppb
SO2
4.02ppb
NO2
0.16ppm
CO
AQI 38
Good
6.78μg/m³
PM2.5
21.39μg/m³
PM10
36.19ppb
O3
0.43ppb
SO2
4.19ppb
NO2
0.14ppm
CO
AQI 52
Moderate
9.81μg/m³
PM2.5
16.77μg/m³
PM10
38.03ppb
O3
0.49ppb
SO2
3.46ppb
NO2
0.16ppm
CO
AQI 38
Good
7.42μg/m³
PM2.5
19.34μg/m³
PM10
37.44ppb
O3
0.43ppb
SO2
3.78ppb
NO2
0.14ppm
CO
AQI 44
Good
8.26μg/m³
PM2.5
20.83μg/m³
PM10
36.85ppb
O3
0.49ppb
SO2
4.22ppb
NO2
0.17ppm
CO
AQI 52
Moderate
9.87μg/m³
PM2.5
16.62μg/m³
PM10
38.13ppb
O3
0.49ppb
SO2
3.42ppb
NO2
0.16ppm
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 06:00:00 on 2026-03-09.
In the last 24 hours, the best air quality in Adelphi, Maryland was observed at 02:00:00 on 2026-03-09.
As of now, the AQI in Adelphi, Maryland is 44, indicating Good 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 7.805 μg/m3.
The PM10 concentration in Adelphi, Maryland is 19.679 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Adelphi, Maryland is 0.146 ppm.
Currently, Adelphi, Maryland has a sulfur dioxide (SO2) concentration of 0.452 ppb.
The current ozone (O3) level in Adelphi, Maryland at the moment is 36.952 ppm.
Nitrogen dioxide (NO2) level in Adelphi, Maryland at the moment is 3.932 ppb.
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