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)
49
Good
Greenbelt, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
40.64 μg/m³
0
55
155
255
425
605+
45.59 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
4.36 ppb
0
54
101
361
1250
2050+
0.47 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Greenbelt, Maryland
Greenbelt, Maryland
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AQI 54
Moderate
10.97μg/m³
PM2.5
49.47μg/m³
PM10
49.10ppb
O3
0.73ppb
SO2
4.32ppb
NO2
0.39ppm
CO
AQI 54
Moderate
11.41μg/m³
PM2.5
51.39μg/m³
PM10
49.98ppb
O3
0.71ppb
SO2
4.12ppb
NO2
0.32ppm
CO
AQI 52
Moderate
10.08μg/m³
PM2.5
45.37μg/m³
PM10
47.22ppb
O3
0.78ppb
SO2
4.94ppb
NO2
0.52ppm
CO
AQI 54
Moderate
10.97μg/m³
PM2.5
49.47μg/m³
PM10
49.10ppb
O3
0.73ppb
SO2
4.32ppb
NO2
0.39ppm
CO
AQI 54
Moderate
11.38μg/m³
PM2.5
51.94μg/m³
PM10
48.82ppb
O3
0.71ppb
SO2
3.49ppb
NO2
0.36ppm
CO
AQI 54
Moderate
11.44μg/m³
PM2.5
51.64μg/m³
PM10
49.87ppb
O3
0.71ppb
SO2
4.00ppb
NO2
0.32ppm
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 07:00:00 on 2026-06-11.
In the last 24 hours, the best air quality in Greenbelt, Maryland was observed at 07:00:00 on 2026-06-11.
As of now, the AQI in Greenbelt, Maryland is 49, indicating Good 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 9.278 μg/m3.
The PM10 concentration in Greenbelt, Maryland is 40.641 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Greenbelt, Maryland is 0.474 ppm.
Currently, Greenbelt, Maryland has a sulfur dioxide (SO2) concentration of 0.668 ppb.
The current ozone (O3) level in Greenbelt, Maryland at the moment is 45.588 ppm.
Nitrogen dioxide (NO2) level in Greenbelt, Maryland at the moment is 4.362 ppb.
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