Stay updated with real-time air quality in Annapolis, 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)
52
Moderate
Annapolis, Maryland
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.50 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
12.44 μg/m³
0
55
155
255
425
605+
13.17 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
14.16 ppb
0
54
101
361
1250
2050+
0.43 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Annapolis, Maryland
Annapolis, Maryland
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AQI 33
Good
6.13μg/m³
PM2.5
28.90μg/m³
PM10
6.52ppb
O3
0.25ppb
SO2
15.92ppb
NO2
0.35ppm
CO
AQI 27
Good
5.44μg/m³
PM2.5
25.77μg/m³
PM10
5.94ppb
O3
0.25ppb
SO2
15.32ppb
NO2
0.35ppm
CO
AQI 33
Good
5.87μg/m³
PM2.5
24.71μg/m³
PM10
5.76ppb
O3
0.27ppb
SO2
15.62ppb
NO2
0.35ppm
CO
AQI 38
Good
7.33μg/m³
PM2.5
28.63μg/m³
PM10
6.22ppb
O3
0.28ppb
SO2
15.39ppb
NO2
0.35ppm
CO
AQI 38
Good
7.19μg/m³
PM2.5
28.58μg/m³
PM10
7.78ppb
O3
0.28ppb
SO2
16.30ppb
NO2
0.35ppm
CO
AQI 33
Good
5.75μg/m³
PM2.5
24.07μg/m³
PM10
5.05ppb
O3
0.24ppb
SO2
19.35ppb
NO2
0.32ppm
CO
Air quality data and pollutant measurements for Maryland, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Annapolis, Maryland is updated every hour.
The worst air quality in Annapolis, Maryland in the last 24 hours was observed at 03:00:00 on 2025-10-21.
In the last 24 hrs, the best air quality in Annapolis, Maryland was observed at 02:00:00 on 2025-10-21.
The current air quality in Annapolis, Maryland is 22, categorized as Good based on real-time data.
The most common pollutant in Annapolis, Maryland is PM2.5.
If the air quality in Annapolis, Maryland is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Annapolis, Maryland is 4.201 μg/m3.
The current PM10 concentration at Annapolis, Maryland is 11.2 μg/m3.
The current carbon monoxide (CO) concentration at Annapolis, Maryland is 0.354 ppm.
The current sulfur dioxide (SO2) concentration at Annapolis, Maryland is 0.242 ppb.
The current ozone (O3) concentration at Annapolis, Maryland is 4.847 ppm.
The current nitrogen dioxide (NO2) concentration at Annapolis, Maryland is 15.916 ppb.
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