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)
27
Good
Annapolis, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.92 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.61 μg/m³
0
55
155
255
425
605+
27.43 ppb
0
55
71
86
201
201+
0.41 ppb
0
36
76
186
605
1005+
11.24 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Annapolis, Maryland
Annapolis, Maryland
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AQI 33
Good
5.71μg/m³
PM2.5
23.16μg/m³
PM10
29.01ppb
O3
0.36ppb
SO2
11.14ppb
NO2
0.18ppm
CO
AQI 33
Good
5.76μg/m³
PM2.5
23.21μg/m³
PM10
30.78ppb
O3
0.36ppb
SO2
11.89ppb
NO2
0.18ppm
CO
AQI 38
Good
6.62μg/m³
PM2.5
28.67μg/m³
PM10
31.00ppb
O3
0.32ppb
SO2
10.02ppb
NO2
0.18ppm
CO
AQI 44
Good
8.38μg/m³
PM2.5
30.86μg/m³
PM10
29.93ppb
O3
0.32ppb
SO2
9.06ppb
NO2
0.18ppm
CO
AQI 49
Good
8.53μg/m³
PM2.5
31.22μg/m³
PM10
29.92ppb
O3
0.31ppb
SO2
9.21ppb
NO2
0.18ppm
CO
AQI 33
Good
5.69μg/m³
PM2.5
22.48μg/m³
PM10
33.60ppb
O3
0.41ppb
SO2
10.93ppb
NO2
0.19ppm
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 05:00:00 on 2026-01-22.
In the last 24 hrs, the best air quality in Annapolis, Maryland was observed at 02:00:00 on 2026-01-23.
The current air quality in Annapolis, Maryland is 27, 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 4.915 μg/m3.
The current PM10 concentration at Annapolis, Maryland is 20.609 μg/m3.
The current carbon monoxide (CO) concentration at Annapolis, Maryland is 0.179 ppm.
The current sulfur dioxide (SO2) concentration at Annapolis, Maryland is 0.407 ppb.
The current ozone (O3) concentration at Annapolis, Maryland is 27.427 ppm.
The current nitrogen dioxide (NO2) concentration at Annapolis, Maryland is 11.239 ppb.
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