Health Risk AQHI At Risk Population General Population
Low Risk 1 – 3 Enjoy your usual outdoor activities. Ideal air quality for outdoor activities.
Moderate Risk 4 – 6 Consider reducing or rescheduling strenuous activities outdoors if you are experiencing symptoms. No need to modify your usual outdoor activities unless you experience symptoms.
High Risk 7 – 10 Reduce or reschedule strenuous activities outdoors. Children and the elderly should also take it easy. Consider reducing or rescheduling strenuous activities outdoors if you experience symptoms.
Very High Risk 10+ Avoid strenuous activities outdoors. Children and the elderly should also avoid outdoor physical exertion. Reduce or reschedule strenuous activities outdoors, especially if you experience symptoms.

Health Vulnerability Statement

All communities included in this report are designated as “underserved” by MDEnviroScreen. Notably, Turner Station, Cheverly, Cedar Heights, Curtis Bay, and areas near HCNR, and HU-B are further classified as “overburdened,” meaning they face a cumulative impact of three or more environmental or health stressors.

Critical sensitive population indicators (75th Percentile or higher):

Due to these compounding health disparities and socio-environmental stressors, the reported Air Quality Health Index (AQHI) represents a conservative baseline; the actual risk to residents in the tracts mentioned above is likely higher than the index alone suggests.

MDEnviroScreen Map

Spatial distribution of overburdened communities via MDEnviroScreen.

AQHI Summary for All ARP Grant-funded Modulair Sensors
Sensor Total_Hours Mean_AQHI Median_AQHI Max_AQHI Hours_High_Risk Min_AQHI
MOD-00536 - Cheverly 6111 4 4 9 22 1
MOD-00537 - Turner Station North 6533 4 4 9 107 1
MOD-00733 196 2 2 4 0 2
MOD-00745 - Cedar Heights 5908 3 3 9 8 1
MOD-00746 - HCNR 5540 4 4 6 0 1
MOD-00747 - Turner Station South 8041 3 3 6 0 1
MOD-00748 - Annapolis 7218 3 3 6 0 0
MOD-00749 - HU - Beltsville 4550 3 3 6 0 0
MOD-00760 2197 3 3 8 47 0
MOD-00824 - Curtis Bay 2675 3 3 5 0 1
AQHI Summary at MDE Regulatory Monitors*
Monitor Total_Hours Mean_AQHI Median_AQHI Max_AQHI Hours_High_Risk Min_AQHI
HUB 8222 2 2 5 0 0
Essex 7108 3 3 8 6 1
Lake_Montebello 5794 3 3 7 2 1
Piney_Run 7956 2 2 6 0 0
HCNR 5183 3 2 5 0 1
*HCNR statistics are a hybrid of regulatory monitor data (PM2.5 & NO2) and sensor data (O3).  
## The highest AQHI value recorded was 9, reached by sensor(s) MOD-00536 - Cheverly ( 2 h) and MOD-00537 - Turner Station North ( 6 h) and MOD-00745 - Cedar Heights ( 1 h)
Highest AQHI Sensor(s) and Hours at Maximum
Sensor Max_AQHI Hours_at_Max
MOD-00536 - Cheverly 9 2
MOD-00537 - Turner Station North 9 6
MOD-00745 - Cedar Heights 9 1

Concentration Statistics
Station Pollutant Mean Median MAD Max (Outlier Check) Skew Kurtosis Valid Obs
Annapolis co 772.68 742.15 59.30 1783.25 2.49 9.87 7237
Annapolis no 2.54 2.19 0.52 138.3 23.18 742.13 7152
Annapolis no2 21.48 25.23 8.26 44.96 -0.47 -1.10 7237
Annapolis o3 20.38 19.19 11.09 67.68 0.64 0.18 7237
Annapolis pm1 4.69 3.59 2.77 80.17 3.82 47.71 7282
Annapolis pm10 14.12 9.64 5.91 6943.32 62.34 4475.28 7282
Annapolis pm25 5.26 4.23 3.07 81.52 3.59 42.77 7282
Cedar Heights co 807.20 766.92 81.04 2057.53 2.32 8.89 5952
Cedar Heights no 2.75 2.18 0.50 108.92 12.84 200.88 5948
Cedar Heights no2 23.01 26.59 7.07 51.46 -0.57 -0.78 5952
Cedar Heights o3 19.62 17.83 12.32 68.01 0.75 0.30 5952
Cedar Heights pm1 6.98 5.80 4.04 142.65 7.04 119.23 6006
Cedar Heights pm10 14.31 11.48 6.00 2188.35 36.80 1577.31 6006
Cedar Heights pm25 7.45 6.28 4.22 144.95 6.94 117.03 6006
Cheverly co 510.03 466.94 75.28 1626.81 2.69 10.29 6212
Cheverly no 3.33 2.11 0.46 220.72 11.68 173.29 6181
Cheverly no2 17.70 19.65 8.94 52.11 -0.14 -0.95 6212
Cheverly o3 31.22 30.42 11.39 74.18 0.58 0.24 6212
Cheverly pm1 8.42 7.05 5.24 114.3 4.90 60.24 6202
Cheverly pm10 20.69 14.18 10.09 4376.43 31.75 1191.77 6202
Cheverly pm25 8.86 7.49 5.35 115.96 4.87 60.06 6202
Curtis Bay co 742.45 672.18 88.85 4432.01 5.83 66.74 2700
Curtis Bay no 3.04 2.40 0.35 79.82 12.08 179.98 2700
Curtis Bay no2 10.89 10.55 3.88 27.81 0.64 0.37 2700
Curtis Bay o3 36.86 37.09 8.64 75.05 -0.05 0.17 2700
Curtis Bay pm1 3.74 2.06 2.58 27.54 1.79 3.79 2680
Curtis Bay pm10 10.52 3.83 4.90 276.88 3.80 26.69 2680
Curtis Bay pm25 4.08 2.43 2.91 30.63 1.69 3.24 2680
HCNR co 787.37 763.59 75.73 2050.87 1.60 7.49 5541
HCNR no 2.98 2.34 0.63 70.09 9.15 128.94 5541
HCNR no2 27.41 30.55 7.53 48.48 -0.78 -0.42 5541
HCNR o3 24.05 23.90 12.30 58.49 0.21 -0.57 5541
HCNR pm1 4.80 3.79 2.78 23.78 1.40 2.24 5546
HCNR pm10 21.57 10.39 6.41 3868.74 22.46 612.28 5546
HCNR pm25 5.44 4.38 3.13 25.38 1.33 2.06 5546
HU-Beltsville co 740.55 720.98 53.56 1199.57 1.65 4.22 4550
HU-Beltsville no 2.45 2.24 0.51 15.35 3.92 32.74 4550
HU-Beltsville no2 20.81 23.36 7.29 51.75 -0.30 -0.85 4550
HU-Beltsville o3 19.69 18.56 12.11 69.83 0.64 0.28 4550
HU-Beltsville pm1 4.88 3.81 2.80 27.02 1.57 3.29 4555
HU-Beltsville pm10 27.51 9.39 5.94 2912.87 12.85 184.94 4555
HU-Beltsville pm25 5.45 4.43 3.15 27.69 1.42 2.60 4555
MOD-00733 co 1063.99 1002.75 114.21 4502.59 7.56 113.86 659
MOD-00733 no 2.34 2.08 0.35 30.11 14.50 273.00 659
MOD-00733 no2 13.76 12.03 7.03 29.57 0.36 -1.12 659
MOD-00733 o3 30.36 27.82 7.47 65.7 0.50 0.06 659
MOD-00733 pm1 1.32 0.36 0.30 52.68 7.62 63.36 197
MOD-00733 pm10 2.85 0.48 0.39 183.93 9.81 109.36 197
MOD-00733 pm25 1.66 0.38 0.31 56.21 6.51 44.66 197
MOD-00760 co 841.04 821.84 91.33 1340.87 0.89 1.17 2197
MOD-00760 no 2.17 1.98 0.47 12.55 4.30 39.48 2197
MOD-00760 no2 21.35 19.94 17.92 52.72 0.28 -1.31 2197
MOD-00760 o3 18.05 15.39 21.30 84.48 0.53 -0.39 2197
MOD-00760 pm1 8.74 7.01 5.19 118.69 3.65 37.40 2200
MOD-00760 pm10 19.51 17.46 7.54 128.48 2.20 11.39 2200
MOD-00760 pm25 9.64 7.98 5.31 120.46 3.65 37.38 2200
Turner Station North co 524.38 487.43 63.12 1434.11 2.49 8.70 6547
Turner Station North no 3.00 2.20 0.51 183.9 14.46 272.43 6547
Turner Station North no2 18.15 20.07 8.52 37.77 -0.18 -1.10 6547
Turner Station North o3 33.10 32.05 8.71 128.17 0.91 2.27 6547
Turner Station North pm1 15.17 10.28 8.71 151.92 2.34 8.81 6538
Turner Station North pm10 26.79 20.30 12.95 2202.2 27.17 1130.59 6538
Turner Station North pm25 15.90 11.00 8.78 153.69 2.35 8.94 6538
Turner Station South co 629.10 602.67 55.82 2145.74 3.00 18.47 8075
Turner Station South no 2.98 2.25 0.61 149.4 15.04 262.14 8015
Turner Station South no2 18.64 20.28 11.47 51.08 -0.10 -1.28 8075
Turner Station South o3 27.27 25.73 9.75 79.2 0.79 0.70 8075
Turner Station South pm1 5.38 4.18 3.18 78.81 2.41 20.76 8131
Turner Station South pm10 23.49 14.41 9.03 5084.11 27.37 917.34 8131
Turner Station South pm25 6.16 5.02 3.52 80.51 2.23 18.17 8131