Stay updated with real-time air quality in Smithfield, North Carolina 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)
49
Good
Smithfield, North Carolina
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
9.22 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.78 μg/m³
0
55
155
255
425
605+
35.34 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
5.15 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Smithfield, North Carolina
Smithfield, North Carolina
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AQI 58
Moderate
12.77μg/m³
PM2.5
56.90μg/m³
PM10
26.05ppb
O3
0.32ppb
SO2
5.78ppb
NO2
0.21ppm
CO
AQI 44
Good
8.09μg/m³
PM2.5
28.34μg/m³
PM10
32.47ppb
O3
0.30ppb
SO2
5.83ppb
NO2
0.21ppm
CO
AQI 44
Good
7.74μg/m³
PM2.5
26.45μg/m³
PM10
32.07ppb
O3
0.26ppb
SO2
5.91ppb
NO2
0.20ppm
CO
AQI 44
Good
8.07μg/m³
PM2.5
24.66μg/m³
PM10
35.66ppb
O3
0.24ppb
SO2
5.69ppb
NO2
0.20ppm
CO
AQI 52
Moderate
9.83μg/m³
PM2.5
39.49μg/m³
PM10
29.02ppb
O3
0.38ppb
SO2
7.35ppb
NO2
0.20ppm
CO
AQI 38
Good
7.21μg/m³
PM2.5
19.89μg/m³
PM10
36.20ppb
O3
0.24ppb
SO2
5.88ppb
NO2
0.20ppm
CO
Air quality measurements for North Carolina, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Smithfield, North Carolina is updated on an hourly basis.
The worst air quality in Smithfield, North Carolina was recorded at 05:00:00 on 2026-08-11.
The best air quality in Smithfield, North Carolina was recorded at 08:00:00 on 2026-08-12.
The real-time air quality index in Smithfield, North Carolina is 49, currently categorized as Good.
The most common pollutant in Smithfield, North Carolina is PM2.5.
If the air quality in Smithfield, North Carolina is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Smithfield, North Carolina at present are 9.221 μg/m3.
The current PM10 levels in Smithfield, North Carolina are 41.776 μg/m3.
The current carbon monoxide (CO) level in Smithfield, North Carolina is 0.337 ppm.
The current sulfur dioxide (SO2) levels in Smithfield, North Carolina are 0.346 ppb.
The current ozone (O3) levels at Smithfield, North Carolina is 35.337 ppm.
The current nitrogen dioxide (NO2) levels at Smithfield, North Carolina is 5.154 ppb.
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