Real-time air quality index in Colesville, Maryland today
Stay updated with real-time air quality in Colesville, 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)
48
Good
Colesville, Maryland
Last updated: ... (Local time)
Common air pollutants in Colesville, Maryland
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
4.87 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
21.77 μg/m³
0
55
155
255
425
605+
Ozone (O3)
52.14 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.37 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
2.34 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Colesville, Maryland
Colesville, Maryland
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Colesville, Maryland air quality map: Real-time AQI near you
Air quality in nearby cities
Cloverly, Maryland
AQI 46
Good
4.56μg/m³
PM2.5
21.45μg/m³
PM10
50.41ppb
O3
0.35ppb
SO2
2.88ppb
NO2
0.15ppm
CO
Fairland, Maryland
AQI 50
Good
5.66μg/m³
PM2.5
25.41μg/m³
PM10
54.14ppb
O3
0.38ppb
SO2
1.84ppb
NO2
0.12ppm
CO
White Oak, Maryland
AQI 48
Good
5.32μg/m³
PM2.5
23.92μg/m³
PM10
52.24ppb
O3
0.36ppb
SO2
2.89ppb
NO2
0.17ppm
CO
Kemp Mill, Maryland
AQI 47
Good
4.75μg/m³
PM2.5
21.47μg/m³
PM10
51.37ppb
O3
0.36ppb
SO2
2.67ppb
NO2
0.18ppm
CO
Glenmont, Maryland
AQI 48
Good
4.78μg/m³
PM2.5
21.59μg/m³
PM10
51.70ppb
O3
0.36ppb
SO2
2.63ppb
NO2
0.18ppm
CO
Wheaton, Maryland
AQI 48
Good
4.78μg/m³
PM2.5
21.59μg/m³
PM10
51.70ppb
O3
0.36ppb
SO2
2.63ppb
NO2
0.18ppm
CO
How accurate is Maryland, USA air quality data?
Air quality measurements for Maryland, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Frequently asked questions
How frequently is the air quality data for Colesville, Maryland updated?
Air quality data for Colesville, Maryland is updated on an hourly basis.
When did Colesville, Maryland experience the worst air quality in the last 24 hours?
The worst air quality in Colesville, Maryland was recorded at 11:00:00 on 2026-07-22.
When did Colesville, Maryland have its best air quality in the last 24 hours?
The best air quality in Colesville, Maryland was recorded at 03:00:00 on 2026-07-23.
What is the real-time air quality index for Colesville, Maryland?
The real-time air quality index in Colesville, Maryland is 48, currently categorized as Good.
Which pollutant is found most often in Colesville, Maryland?
The most common pollutant in Colesville, Maryland is O3.
What can I do if the air quality in Colesville, Maryland is poor?
If the air quality in Colesville, Maryland is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Colesville, Maryland?
The measured PM2.5 levels in Colesville, Maryland at present are 4.871 μg/m3.
What are the current PM10 levels at Colesville, Maryland?
The current PM10 levels in Colesville, Maryland are 21.771 μg/m3.
What are the current carbon monoxide (CO) levels at Colesville, Maryland?
The current carbon monoxide (CO) level in Colesville, Maryland is 0.155 ppm.
What are the current sulfur dioxide (SO2) levels at Colesville, Maryland?
The current sulfur dioxide (SO2) levels in Colesville, Maryland are 0.366 ppb.
What are the current ozone (O3) levels at Colesville, Maryland?
The current ozone (O3) levels at Colesville, Maryland is 52.142 ppm.
What are the current nitrogen dioxide (NO2) levels at Colesville, Maryland?
The current nitrogen dioxide (NO2) levels at Colesville, Maryland is 2.34 ppb.
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