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

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.60 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.53 μg/m³
0
55
155
255
425
605+
29.29 ppb
0
55
71
86
201
201+
0.58 ppb
0
36
76
186
605
1005+
18.81 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Hagerstown, Maryland
Hagerstown, Maryland
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AQI 27
Good
4.59μg/m³
PM2.5
19.65μg/m³
PM10
29.14ppb
O3
0.58ppb
SO2
18.90ppb
NO2
0.18ppm
CO
AQI 44
Good
7.62μg/m³
PM2.5
22.77μg/m³
PM10
30.71ppb
O3
0.47ppb
SO2
16.09ppb
NO2
0.18ppm
CO
AQI 27
Good
4.83μg/m³
PM2.5
24.36μg/m³
PM10
25.16ppb
O3
0.63ppb
SO2
16.91ppb
NO2
0.18ppm
CO
AQI 33
Good
6.17μg/m³
PM2.5
18.89μg/m³
PM10
36.38ppb
O3
0.47ppb
SO2
14.48ppb
NO2
0.18ppm
CO
AQI 33
Good
4.67μg/m³
PM2.5
18.75μg/m³
PM10
35.79ppb
O3
0.48ppb
SO2
14.23ppb
NO2
0.18ppm
CO
AQI 39
Good
3.66μg/m³
PM2.5
13.34μg/m³
PM10
41.74ppb
O3
0.40ppb
SO2
14.32ppb
NO2
0.18ppm
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 Hagerstown, Maryland is updated every hour.
The worst air quality in Hagerstown, Maryland in the last 24 hours was observed at 01:00:00 on 2026-01-22.
In the last 24 hrs, the best air quality in Hagerstown, Maryland was observed at 04:00:00 on 2026-01-23.
The current air quality in Hagerstown, Maryland is 27, categorized as Good based on real-time data.
The most common pollutant in Hagerstown, Maryland is O3.
If the air quality in Hagerstown, Maryland is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Hagerstown, Maryland is 4.598 μg/m3.
The current PM10 concentration at Hagerstown, Maryland is 19.527 μg/m3.
The current carbon monoxide (CO) concentration at Hagerstown, Maryland is 0.18 ppm.
The current sulfur dioxide (SO2) concentration at Hagerstown, Maryland is 0.58 ppb.
The current ozone (O3) concentration at Hagerstown, Maryland is 29.29 ppm.
The current nitrogen dioxide (NO2) concentration at Hagerstown, Maryland is 18.809 ppb.
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