Stay updated with real-time air quality in Waldorf, 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)
51
Moderate
Waldorf, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.35 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.40 μg/m³
0
55
155
255
425
605+
54.65 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
3.48 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Waldorf, Maryland
Waldorf, Maryland
Scroll To Air Quality MapLoading...
AQI 50
Good
5.30μg/m³
PM2.5
19.07μg/m³
PM10
53.65ppb
O3
0.35ppb
SO2
3.47ppb
NO2
0.17ppm
CO
AQI 49
Good
5.36μg/m³
PM2.5
19.34μg/m³
PM10
53.10ppb
O3
0.34ppb
SO2
3.48ppb
NO2
0.17ppm
CO
AQI 49
Good
5.24μg/m³
PM2.5
21.80μg/m³
PM10
52.82ppb
O3
0.36ppb
SO2
3.52ppb
NO2
0.17ppm
CO
AQI 50
Good
5.36μg/m³
PM2.5
16.01μg/m³
PM10
53.61ppb
O3
0.34ppb
SO2
3.40ppb
NO2
0.17ppm
CO
AQI 50
Good
4.12μg/m³
PM2.5
16.19μg/m³
PM10
54.44ppb
O3
0.36ppb
SO2
3.57ppb
NO2
0.18ppm
CO
AQI 58
Moderate
2.85μg/m³
PM2.5
11.36μg/m³
PM10
57.04ppb
O3
0.36ppb
SO2
3.72ppb
NO2
0.19ppm
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 Waldorf, Maryland is updated every hour for accuracy.
In the past 24 hours, the air quality in Waldorf, Maryland was at its worst at 09:00:00 on 2026-07-23.
In the last 24 hours, the best air quality in Waldorf, Maryland was observed at 12:00:00 on 2026-07-23.
As of now, the AQI in Waldorf, Maryland is 51, indicating Moderate conditions.
Waldorf, Maryland air has the highest levels of O3.
Poor air quality in Waldorf, Maryland means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Waldorf, Maryland are currently 5.352 μg/m3.
The PM10 concentration in Waldorf, Maryland is 19.398 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Waldorf, Maryland is 0.172 ppm.
Currently, Waldorf, Maryland has a sulfur dioxide (SO2) concentration of 0.342 ppb.
The current ozone (O3) level in Waldorf, Maryland at the moment is 54.653 ppm.
Nitrogen dioxide (NO2) level in Waldorf, Maryland at the moment is 3.478 ppb.
All Rights Reserved © Ambee Inc. 2025