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)
38
Good
Greenbelt, Maryland
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
6.59 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.07 μg/m³
0
55
155
255
425
605+
3.46 ppb
0
55
71
86
201
201+
0.31 ppb
0
36
76
186
605
1005+
11.68 ppb
0
54
101
361
1250
2050+
0.44 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Greenbelt, Maryland
Greenbelt, Maryland
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AQI 26
Good
1.58μg/m³
PM2.5
8.38μg/m³
PM10
28.13ppb
O3
0.12ppb
SO2
4.09ppb
NO2
0.12ppm
CO
AQI 28
Good
1.19μg/m³
PM2.5
5.80μg/m³
PM10
30.44ppb
O3
0.13ppb
SO2
4.41ppb
NO2
0.13ppm
CO
AQI 22
Good
1.88μg/m³
PM2.5
10.43μg/m³
PM10
23.69ppb
O3
0.11ppb
SO2
3.72ppb
NO2
0.11ppm
CO
AQI 26
Good
1.58μg/m³
PM2.5
8.38μg/m³
PM10
28.13ppb
O3
0.12ppb
SO2
4.09ppb
NO2
0.12ppm
CO
AQI 23
Good
1.24μg/m³
PM2.5
5.57μg/m³
PM10
24.97ppb
O3
0.13ppb
SO2
3.64ppb
NO2
0.16ppm
CO
AQI 26
Good
1.10μg/m³
PM2.5
4.95μg/m³
PM10
27.56ppb
O3
0.13ppb
SO2
4.21ppb
NO2
0.14ppm
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 2025-10-21.
In the last 24 hours, the best air quality in Greenbelt, Maryland was observed at 02:00:00 on 2025-10-21.
As of now, the AQI in Greenbelt, Maryland is 38, 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 6.589 μg/m3.
The PM10 concentration in Greenbelt, Maryland is 29.07 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Greenbelt, Maryland is 0.437 ppm.
Currently, Greenbelt, Maryland has a sulfur dioxide (SO2) concentration of 0.306 ppb.
The current ozone (O3) level in Greenbelt, Maryland at the moment is 3.462 ppm.
Nitrogen dioxide (NO2) level in Greenbelt, Maryland at the moment is 11.683 ppb.
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