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)
27
Good
Adelphi, Maryland
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.95 μg/m³
0
55
155
255
425
605+
18.77 ppb
0
55
71
86
201
201+
0.22 ppb
0
36
76
186
605
1005+
3.73 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Adelphi, Maryland
Adelphi, Maryland
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AQI 45
Good
7.22μg/m³
PM2.5
30.47μg/m³
PM10
49.38ppb
O3
0.11ppb
SO2
3.27ppb
NO2
0.32ppm
CO
AQI 42
Good
6.76μg/m³
PM2.5
29.22μg/m³
PM10
44.75ppb
O3
0.11ppb
SO2
3.89ppb
NO2
0.30ppm
CO
AQI 46
Good
6.96μg/m³
PM2.5
28.66μg/m³
PM10
50.34ppb
O3
0.11ppb
SO2
2.83ppb
NO2
0.31ppm
CO
AQI 43
Good
6.46μg/m³
PM2.5
27.45μg/m³
PM10
45.56ppb
O3
0.11ppb
SO2
3.52ppb
NO2
0.30ppm
CO
AQI 46
Good
6.94μg/m³
PM2.5
29.60μg/m³
PM10
49.77ppb
O3
0.11ppb
SO2
3.32ppb
NO2
0.34ppm
CO
AQI 46
Good
6.94μg/m³
PM2.5
28.53μg/m³
PM10
50.40ppb
O3
0.11ppb
SO2
2.80ppb
NO2
0.31ppm
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 11:00:00 on 2025-07-18.
In the last 24 hours, the best air quality in Adelphi, Maryland was observed at 01:00:00 on 2025-07-18.
As of now, the AQI in Adelphi, Maryland is 44, indicating Good conditions.
Adelphi, Maryland air has the highest levels of O3.
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 6.765 μg/m3.
The PM10 concentration in Adelphi, Maryland is 28.76 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Adelphi, Maryland is 0.309 ppm.
Currently, Adelphi, Maryland has a sulfur dioxide (SO2) concentration of 0.108 ppb.
The current ozone (O3) level in Adelphi, Maryland at the moment is 46.909 ppm.
Nitrogen dioxide (NO2) level in Adelphi, Maryland at the moment is 3.502 ppb.
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