Stay updated with real-time air quality in Reisterstown, 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)
40
Good
Reisterstown, Maryland
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.30 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.94 μg/m³
0
55
155
255
425
605+
43.40 ppb
0
55
71
86
201
201+
0.26 ppb
0
36
76
186
605
1005+
4.01 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Reisterstown, Maryland
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AQI 36
Good
4.49μg/m³
PM2.5
18.01μg/m³
PM10
39.29ppb
O3
0.26ppb
SO2
3.10ppb
NO2
0.18ppm
CO
AQI 36
Good
4.41μg/m³
PM2.5
17.22μg/m³
PM10
38.71ppb
O3
0.26ppb
SO2
2.96ppb
NO2
0.18ppm
CO
AQI 36
Good
4.43μg/m³
PM2.5
17.56μg/m³
PM10
38.85ppb
O3
0.26ppb
SO2
3.02ppb
NO2
0.18ppm
CO
AQI 37
Good
3.63μg/m³
PM2.5
16.30μg/m³
PM10
40.32ppb
O3
0.26ppb
SO2
3.48ppb
NO2
0.18ppm
CO
AQI 36
Good
4.44μg/m³
PM2.5
17.25μg/m³
PM10
38.69ppb
O3
0.26ppb
SO2
2.94ppb
NO2
0.18ppm
CO
AQI 36
Good
4.39μg/m³
PM2.5
17.06μg/m³
PM10
38.57ppb
O3
0.26ppb
SO2
2.93ppb
NO2
0.18ppm
CO
Air quality and pollutant data for Maryland, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Reisterstown, Maryland is updated every hour for accuracy.
In the past 24 hours, the air quality in Reisterstown, Maryland was at its worst at 07:00:00 on 2026-03-15.
In the last 24 hours, the best air quality in Reisterstown, Maryland was observed at 10:00:00 on 2026-03-15.
As of now, the AQI in Reisterstown, Maryland is 40, indicating Good conditions.
Reisterstown, Maryland air has the highest levels of O3.
Poor air quality in Reisterstown, Maryland means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Reisterstown, Maryland are currently 4.303 μg/m3.
The PM10 concentration in Reisterstown, Maryland is 17.938 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Reisterstown, Maryland is 0.177 ppm.
Currently, Reisterstown, Maryland has a sulfur dioxide (SO2) concentration of 0.259 ppb.
The current ozone (O3) level in Reisterstown, Maryland at the moment is 43.402 ppm.
Nitrogen dioxide (NO2) level in Reisterstown, Maryland at the moment is 4.007 ppb.
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