Real-time air quality index in Arnold, Maryland today
Stay updated with real-time air quality in Arnold, 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)
77
Moderate
Arnold, Maryland
Last updated: ... (Local time)
Common air pollutants in Arnold, Maryland
Good
Fine
Moderate
Poor
Very poor
Hazardous
Particulate Matter2.5 (PM2.5)
9.40 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
Particulate Matter10 (PM10)
29.13 μg/m³
0
55
155
255
425
605+
Ozone (O3)
62.59 ppb
0
55
71
86
201
201+
Sulfur Dioxide (SO2)
0.55 ppb
0
36
76
186
605
1005+
Nitrogen Dioxide (NO2)
7.23 ppb
0
54
101
361
1250
2050+
Carbon Monoxide (CO)
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Arnold, Maryland
Arnold, Maryland
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Arnold, Maryland air quality map: Real-time AQI near you
Air quality in nearby cities
Severna Park, Maryland
AQI 74
Moderate
9.13μg/m³
PM2.5
40.53μg/m³
PM10
62.35ppb
O3
0.55ppb
SO2
4.24ppb
NO2
0.16ppm
CO
Annapolis, Maryland
AQI 64
Moderate
9.60μg/m³
PM2.5
27.22μg/m³
PM10
58.96ppb
O3
0.54ppb
SO2
10.48ppb
NO2
0.16ppm
CO
Parole, Maryland
AQI 77
Moderate
8.91μg/m³
PM2.5
29.15μg/m³
PM10
62.93ppb
O3
0.54ppb
SO2
8.00ppb
NO2
0.16ppm
CO
Lake Shore, Maryland
AQI 77
Moderate
8.90μg/m³
PM2.5
35.76μg/m³
PM10
62.76ppb
O3
0.55ppb
SO2
4.50ppb
NO2
0.16ppm
CO
Annapolis Neck, Maryland
AQI 64
Moderate
9.60μg/m³
PM2.5
27.22μg/m³
PM10
58.96ppb
O3
0.54ppb
SO2
10.48ppb
NO2
0.16ppm
CO
Pasadena, Maryland
AQI 74
Moderate
9.77μg/m³
PM2.5
30.08μg/m³
PM10
62.30ppb
O3
0.55ppb
SO2
4.08ppb
NO2
0.16ppm
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 Arnold, Maryland updated?
Air quality data for Arnold, Maryland is updated on an hourly basis.
When did Arnold, Maryland experience the worst air quality in the last 24 hours?
The worst air quality in Arnold, Maryland was recorded at 10:00:00 on 2026-04-23.
When did Arnold, Maryland have its best air quality in the last 24 hours?
The best air quality in Arnold, Maryland was recorded at 01:00:00 on 2026-04-23.
What is the real-time air quality index for Arnold, Maryland?
The real-time air quality index in Arnold, Maryland is 77, currently categorized as Moderate.
Which pollutant is found most often in Arnold, Maryland?
The most common pollutant in Arnold, Maryland is O3.
What can I do if the air quality in Arnold, Maryland is poor?
If the air quality in Arnold, Maryland is poor, limit outdoor activities and use a mask to safeguard your health.
What are the current PM2.5 levels in Arnold, Maryland?
The measured PM2.5 levels in Arnold, Maryland at present are 9.402 μg/m3.
What are the current PM10 levels at Arnold, Maryland?
The current PM10 levels in Arnold, Maryland are 29.131 μg/m3.
What are the current carbon monoxide (CO) levels at Arnold, Maryland?
The current carbon monoxide (CO) level in Arnold, Maryland is 0.158 ppm.
What are the current sulfur dioxide (SO2) levels at Arnold, Maryland?
The current sulfur dioxide (SO2) levels in Arnold, Maryland are 0.546 ppb.
What are the current ozone (O3) levels at Arnold, Maryland?
The current ozone (O3) levels at Arnold, Maryland is 62.591 ppm.
What are the current nitrogen dioxide (NO2) levels at Arnold, Maryland?
The current nitrogen dioxide (NO2) levels at Arnold, Maryland is 7.229 ppb.
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