Stay updated with real-time air quality in Timonium, 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)
56
Moderate
Timonium, Maryland
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.52 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
51.09 μg/m³
0
55
155
255
425
605+
14.07 ppb
0
55
71
86
201
201+
0.19 ppb
0
36
76
186
605
1005+
13.69 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Timonium, Maryland
Timonium, Maryland
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AQI 56
Moderate
11.59μg/m³
PM2.5
51.67μg/m³
PM10
14.23ppb
O3
0.19ppb
SO2
14.33ppb
NO2
0.28ppm
CO
AQI 56
Moderate
11.56μg/m³
PM2.5
51.20μg/m³
PM10
14.06ppb
O3
0.18ppb
SO2
12.43ppb
NO2
0.28ppm
CO
AQI 56
Moderate
11.54μg/m³
PM2.5
51.28μg/m³
PM10
14.10ppb
O3
0.19ppb
SO2
14.37ppb
NO2
0.28ppm
CO
AQI 54
Moderate
11.33μg/m³
PM2.5
49.48μg/m³
PM10
14.02ppb
O3
0.19ppb
SO2
11.27ppb
NO2
0.28ppm
CO
AQI 54
Moderate
11.33μg/m³
PM2.5
49.48μg/m³
PM10
14.02ppb
O3
0.19ppb
SO2
11.27ppb
NO2
0.28ppm
CO
AQI 58
Moderate
12.60μg/m³
PM2.5
59.61μg/m³
PM10
17.74ppb
O3
0.18ppb
SO2
19.27ppb
NO2
0.28ppm
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 Timonium, Maryland is updated every hour.
The worst air quality in Timonium, Maryland in the last 24 hours was observed at 09:00:00 on 2025-06-05.
In the last 24 hrs, the best air quality in Timonium, Maryland was observed at 08:00:00 on 2025-06-06.
The current air quality in Timonium, Maryland is 56, categorized as Moderate based on real-time data.
The most common pollutant in Timonium, Maryland is PM2.5.
If the air quality in Timonium, Maryland is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Timonium, Maryland is 11.523 μg/m3.
The current PM10 concentration at Timonium, Maryland is 51.094 μg/m3.
The current carbon monoxide (CO) concentration at Timonium, Maryland is 0.28 ppm.
The current sulfur dioxide (SO2) concentration at Timonium, Maryland is 0.186 ppb.
The current ozone (O3) concentration at Timonium, Maryland is 14.066 ppm.
The current nitrogen dioxide (NO2) concentration at Timonium, Maryland is 13.693 ppb.
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