Real-time air quality index in Bethesda, Maryland today
Stay updated with real-time air quality in Bethesda, 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)
22
Good
Bethesda, Maryland
Last updated: ... (Local time)
Common air pollutants in Bethesda, Maryland
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
3.81 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
16.63 μg/m³
0
55
155
255
425
605+
Ozone (O3)
18.30 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.20 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
4.82 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Bethesda, Maryland
Bethesda, Maryland
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Bethesda, Maryland air quality map: Real-time AQI near you
Air quality in nearby cities
Silver Spring, Maryland
AQI 60
Moderate
13.56μg/m³
PM2.5
46.98μg/m³
PM10
46.87ppb
O3
0.19ppb
SO2
0.96ppb
NO2
0.27ppm
CO
North Bethesda, Maryland
AQI 56
Moderate
11.95μg/m³
PM2.5
50.16μg/m³
PM10
47.58ppb
O3
0.19ppb
SO2
1.64ppb
NO2
0.23ppm
CO
Takoma Park, Maryland
AQI 60
Moderate
13.54μg/m³
PM2.5
47.08μg/m³
PM10
46.81ppb
O3
0.19ppb
SO2
0.99ppb
NO2
0.27ppm
CO
Wheaton, Maryland
AQI 56
Moderate
12.38μg/m³
PM2.5
49.73μg/m³
PM10
47.36ppb
O3
0.20ppb
SO2
1.45ppb
NO2
0.25ppm
CO
Kemp Mill, Maryland
AQI 58
Moderate
12.69μg/m³
PM2.5
49.81μg/m³
PM10
47.40ppb
O3
0.20ppb
SO2
1.37ppb
NO2
0.25ppm
CO
McLean, Virginia
AQI 58
Moderate
13.35μg/m³
PM2.5
42.44μg/m³
PM10
48.35ppb
O3
0.19ppb
SO2
1.81ppb
NO2
0.21ppm
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 Bethesda, Maryland updated?
Air quality data for Bethesda, Maryland is updated on an hourly basis.
When did Bethesda, Maryland experience the worst air quality in the last 24 hours?
The worst air quality in Bethesda, Maryland was recorded at 04:00:00 on 2025-07-25.
When did Bethesda, Maryland have its best air quality in the last 24 hours?
The best air quality in Bethesda, Maryland was recorded at 02:00:00 on 2025-07-25.
What is the real-time air quality index for Bethesda, Maryland?
The real-time air quality index in Bethesda, Maryland is 60, currently categorized as Moderate.
Which pollutant is found most often in Bethesda, Maryland?
The most common pollutant in Bethesda, Maryland is PM2.5.
What can I do if the air quality in Bethesda, Maryland is poor?
If the air quality in Bethesda, Maryland is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Bethesda, Maryland?
The measured PM2.5 levels in Bethesda, Maryland at present are 14.263 μg/m3.
What are the current PM10 levels at Bethesda, Maryland?
The current PM10 levels in Bethesda, Maryland are 57.617 μg/m3.
What are the current carbon monoxide (CO) levels at Bethesda, Maryland?
The current carbon monoxide (CO) level in Bethesda, Maryland is 0.256 ppm.
What are the current sulfur dioxide (SO2) levels at Bethesda, Maryland?
The current sulfur dioxide (SO2) levels in Bethesda, Maryland are 0.186 ppb.
What are the current ozone (O3) levels at Bethesda, Maryland?
The current ozone (O3) levels at Bethesda, Maryland is 51.534 ppm.
What are the current nitrogen dioxide (NO2) levels at Bethesda, Maryland?
The current nitrogen dioxide (NO2) levels at Bethesda, Maryland is 1.378 ppb.
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