Stay updated with real-time air quality in Greenbelt, 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)
66
Moderate
Greenbelt, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
16.55 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
78.95 μg/m³
0
55
155
255
425
605+
1.52 ppb
0
55
71
86
201
201+
0.80 ppb
0
36
76
186
605
1005+
13.33 ppb
0
54
101
361
1250
2050+
0.51 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Greenbelt, Maryland
Greenbelt, Maryland
Scroll To Air Quality MapLoading...
AQI 64
Moderate
15.65μg/m³
PM2.5
77.67μg/m³
PM10
1.64ppb
O3
0.78ppb
SO2
13.66ppb
NO2
0.46ppm
CO
AQI 60
Moderate
14.10μg/m³
PM2.5
66.27μg/m³
PM10
1.41ppb
O3
0.73ppb
SO2
14.64ppb
NO2
0.40ppm
CO
AQI 66
Moderate
17.42μg/m³
PM2.5
79.28μg/m³
PM10
1.49ppb
O3
0.80ppb
SO2
13.22ppb
NO2
0.55ppm
CO
AQI 64
Moderate
15.65μg/m³
PM2.5
77.67μg/m³
PM10
1.64ppb
O3
0.78ppb
SO2
13.66ppb
NO2
0.46ppm
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 60
Moderate
13.88μg/m³
PM2.5
64.07μg/m³
PM10
1.75ppb
O3
0.72ppb
SO2
14.99ppb
NO2
0.40ppm
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 Greenbelt, Maryland is updated every hour for accuracy.
In the past 24 hours, the air quality in Greenbelt, Maryland was at its worst at 08:00:00 on 2025-12-07.
In the last 24 hours, the best air quality in Greenbelt, Maryland was observed at 10:00:00 on 2025-12-06.
As of now, the AQI in Greenbelt, Maryland is 66, indicating Moderate conditions.
Greenbelt, Maryland air has the highest levels of PM2.5.
Poor air quality in Greenbelt, Maryland means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Greenbelt, Maryland are currently 16.551 μg/m3.
The PM10 concentration in Greenbelt, Maryland is 78.951 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Greenbelt, Maryland is 0.511 ppm.
Currently, Greenbelt, Maryland has a sulfur dioxide (SO2) concentration of 0.798 ppb.
The current ozone (O3) level in Greenbelt, Maryland at the moment is 1.525 ppm.
Nitrogen dioxide (NO2) level in Greenbelt, Maryland at the moment is 13.328 ppb.
All Rights Reserved © Ambee Inc. 2025