Stay updated with real-time air quality in Crofton, 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
Crofton, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.10 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.14 μg/m³
0
55
155
255
425
605+
5.04 ppb
0
55
71
86
201
201+
0.25 ppb
0
36
76
186
605
1005+
4.66 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Crofton, Maryland
Crofton, Maryland
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AQI 33
Good
6.14μg/m³
PM2.5
26.39μg/m³
PM10
5.71ppb
O3
0.28ppb
SO2
7.20ppb
NO2
0.23ppm
CO
AQI 33
Good
5.69μg/m³
PM2.5
23.76μg/m³
PM10
4.90ppb
O3
0.19ppb
SO2
6.35ppb
NO2
0.24ppm
CO
AQI 33
Good
6.00μg/m³
PM2.5
25.44μg/m³
PM10
5.54ppb
O3
0.28ppb
SO2
8.01ppb
NO2
0.24ppm
CO
AQI 33
Good
6.19μg/m³
PM2.5
27.04μg/m³
PM10
8.12ppb
O3
0.24ppb
SO2
5.86ppb
NO2
0.21ppm
CO
AQI 33
Good
5.92μg/m³
PM2.5
21.48μg/m³
PM10
5.91ppb
O3
0.19ppb
SO2
4.82ppb
NO2
0.25ppm
CO
AQI 27
Good
5.01μg/m³
PM2.5
25.13μg/m³
PM10
7.35ppb
O3
0.27ppb
SO2
6.00ppb
NO2
0.25ppm
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 Crofton, Maryland is updated every hour.
The worst air quality in Crofton, Maryland in the last 24 hours was observed at 04:00:00 on 2026-09-07.
In the last 24 hrs, the best air quality in Crofton, Maryland was observed at 01:00:00 on 2026-09-06.
The current air quality in Crofton, Maryland is 33, categorized as Good based on real-time data.
The most common pollutant in Crofton, Maryland is PM2.5.
If the air quality in Crofton, Maryland is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Crofton, Maryland is 6.104 μg/m3.
The current PM10 concentration at Crofton, Maryland is 24.136 μg/m3.
The current carbon monoxide (CO) concentration at Crofton, Maryland is 0.248 ppm.
The current sulfur dioxide (SO2) concentration at Crofton, Maryland is 0.253 ppb.
The current ozone (O3) concentration at Crofton, Maryland is 5.04 ppm.
The current nitrogen dioxide (NO2) concentration at Crofton, Maryland is 4.659 ppb.
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