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)
49
Good
Annapolis, Maryland
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.16 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.46 μg/m³
0
55
155
255
425
605+
17.81 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
5.40 ppb
0
54
101
361
1250
2050+
0.30 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Annapolis, Maryland
Annapolis, Maryland
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AQI 49
Good
9.22μg/m³
PM2.5
40.97μg/m³
PM10
45.56ppb
O3
0.13ppb
SO2
2.59ppb
NO2
0.21ppm
CO
AQI 49
Good
9.47μg/m³
PM2.5
43.91μg/m³
PM10
48.58ppb
O3
0.14ppb
SO2
2.61ppb
NO2
0.21ppm
CO
AQI 49
Good
9.47μg/m³
PM2.5
37.91μg/m³
PM10
48.91ppb
O3
0.15ppb
SO2
3.25ppb
NO2
0.21ppm
CO
AQI 49
Good
9.18μg/m³
PM2.5
42.47μg/m³
PM10
37.30ppb
O3
0.15ppb
SO2
2.68ppb
NO2
0.21ppm
CO
AQI 49
Good
9.46μg/m³
PM2.5
37.90μg/m³
PM10
47.06ppb
O3
0.15ppb
SO2
3.20ppb
NO2
0.21ppm
CO
AQI 49
Good
8.65μg/m³
PM2.5
34.80μg/m³
PM10
46.36ppb
O3
0.24ppb
SO2
2.36ppb
NO2
0.20ppm
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 06:00:00 on 2025-07-27.
In the last 24 hrs, the best air quality in Annapolis, Maryland was observed at 05:00:00 on 2025-07-28.
The current air quality in Annapolis, Maryland is 49, 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 9.474 μg/m3.
The current PM10 concentration at Annapolis, Maryland is 43.905 μg/m3.
The current carbon monoxide (CO) concentration at Annapolis, Maryland is 0.213 ppm.
The current sulfur dioxide (SO2) concentration at Annapolis, Maryland is 0.136 ppb.
The current ozone (O3) concentration at Annapolis, Maryland is 48.582 ppm.
The current nitrogen dioxide (NO2) concentration at Annapolis, Maryland is 2.612 ppb.
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