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)
33
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)
5.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
24.60 μg/m³
0
55
155
255
425
605+
Ozone (O3)
19.24 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.20 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
7.76 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.24 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 38
Good
6.89μg/m³
PM2.5
33.96μg/m³
PM10
14.85ppb
O3
0.23ppb
SO2
8.02ppb
NO2
0.25ppm
CO
North Bethesda, Maryland
AQI 33
Good
5.69μg/m³
PM2.5
25.48μg/m³
PM10
20.06ppb
O3
0.23ppb
SO2
6.41ppb
NO2
0.21ppm
CO
Takoma Park, Maryland
AQI 38
Good
6.89μg/m³
PM2.5
33.94μg/m³
PM10
15.12ppb
O3
0.23ppb
SO2
8.01ppb
NO2
0.25ppm
CO
Wheaton, Maryland
AQI 33
Good
6.05μg/m³
PM2.5
28.17μg/m³
PM10
18.69ppb
O3
0.22ppb
SO2
6.61ppb
NO2
0.23ppm
CO
Kemp Mill, Maryland
AQI 33
Good
6.25μg/m³
PM2.5
29.42μg/m³
PM10
18.42ppb
O3
0.22ppb
SO2
6.76ppb
NO2
0.24ppm
CO
McLean, Virginia
AQI 38
Good
6.95μg/m³
PM2.5
26.45μg/m³
PM10
30.24ppb
O3
0.25ppb
SO2
6.87ppb
NO2
0.19ppm
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 03:00:00 on 2025-10-18.
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 2025-10-19.
What is the real-time air quality index for Bethesda, Maryland?
The real-time air quality index in Bethesda, Maryland is 38, currently categorized as Good.
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 7.124 μg/m3.
What are the current PM10 levels at Bethesda, Maryland?
The current PM10 levels in Bethesda, Maryland are 30.773 μg/m3.
What are the current carbon monoxide (CO) levels at Bethesda, Maryland?
The current carbon monoxide (CO) level in Bethesda, Maryland is 0.315 ppm.
What are the current sulfur dioxide (SO2) levels at Bethesda, Maryland?
The current sulfur dioxide (SO2) levels in Bethesda, Maryland are 0.224 ppb.
What are the current ozone (O3) levels at Bethesda, Maryland?
The current ozone (O3) levels at Bethesda, Maryland is 22.765 ppm.
What are the current nitrogen dioxide (NO2) levels at Bethesda, Maryland?
The current nitrogen dioxide (NO2) levels at Bethesda, Maryland is 9.864 ppb.
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