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)
33
Good
Greenbelt, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.70 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.74 μg/m³
0
55
155
255
425
605+
30.60 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
9.29 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Greenbelt, Maryland
Greenbelt, Maryland
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AQI 38
Good
6.50μg/m³
PM2.5
28.62μg/m³
PM10
34.17ppb
O3
0.39ppb
SO2
8.72ppb
NO2
0.15ppm
CO
AQI 44
Good
7.59μg/m³
PM2.5
32.25μg/m³
PM10
33.62ppb
O3
0.43ppb
SO2
8.78ppb
NO2
0.17ppm
CO
AQI 33
Good
6.35μg/m³
PM2.5
29.44μg/m³
PM10
31.50ppb
O3
0.37ppb
SO2
8.60ppb
NO2
0.11ppm
CO
AQI 38
Good
6.50μg/m³
PM2.5
28.62μg/m³
PM10
34.17ppb
O3
0.39ppb
SO2
8.72ppb
NO2
0.15ppm
CO
AQI 49
Good
9.07μg/m³
PM2.5
50.45μg/m³
PM10
34.33ppb
O3
0.43ppb
SO2
8.02ppb
NO2
0.17ppm
CO
AQI 44
Good
8.15μg/m³
PM2.5
41.34μg/m³
PM10
33.73ppb
O3
0.44ppb
SO2
8.38ppb
NO2
0.18ppm
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 03:00:00 on 2026-01-22.
In the last 24 hours, the best air quality in Greenbelt, Maryland was observed at 01:00:00 on 2026-01-23.
As of now, the AQI in Greenbelt, Maryland is 33, 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 5.704 μg/m3.
The PM10 concentration in Greenbelt, Maryland is 24.736 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Greenbelt, Maryland is 0.121 ppm.
Currently, Greenbelt, Maryland has a sulfur dioxide (SO2) concentration of 0.43 ppb.
The current ozone (O3) level in Greenbelt, Maryland at the moment is 30.602 ppm.
Nitrogen dioxide (NO2) level in Greenbelt, Maryland at the moment is 9.288 ppb.
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