Stay updated with real-time air quality in Knightdale, 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)
31
Good
Knightdale, North Carolina
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
1.21 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
3.22 μg/m³
0
55
155
255
425
605+
33.94 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
1.86 ppb
0
54
101
361
1250
2050+
0.10 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Knightdale, North Carolina
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AQI 31
Good
1.21μg/m³
PM2.5
4.56μg/m³
PM10
33.55ppb
O3
0.55ppb
SO2
2.23ppb
NO2
0.11ppm
CO
AQI 31
Good
1.33μg/m³
PM2.5
3.58μg/m³
PM10
33.84ppb
O3
0.55ppb
SO2
2.40ppb
NO2
0.10ppm
CO
AQI 31
Good
1.24μg/m³
PM2.5
2.57μg/m³
PM10
33.86ppb
O3
0.54ppb
SO2
2.46ppb
NO2
0.10ppm
CO
AQI 31
Good
1.19μg/m³
PM2.5
3.78μg/m³
PM10
33.82ppb
O3
0.55ppb
SO2
2.14ppb
NO2
0.10ppm
CO
AQI 30
Good
0.98μg/m³
PM2.5
4.36μg/m³
PM10
32.16ppb
O3
0.54ppb
SO2
2.49ppb
NO2
0.11ppm
CO
AQI 31
Good
1.24μg/m³
PM2.5
3.79μg/m³
PM10
32.66ppb
O3
0.55ppb
SO2
2.27ppb
NO2
0.10ppm
CO
Air quality data and pollutant measurements for North Carolina, 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 Knightdale, North Carolina is updated every hour.
The worst air quality in Knightdale, North Carolina in the last 24 hours was observed at 01:00:00 on 2026-03-17.
In the last 24 hrs, the best air quality in Knightdale, North Carolina was observed at 11:00:00 on 2026-03-16.
The current air quality in Knightdale, North Carolina is 31, categorized as Good based on real-time data.
The most common pollutant in Knightdale, North Carolina is O3.
If the air quality in Knightdale, North Carolina is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Knightdale, North Carolina is 1.213 μg/m3.
The current PM10 concentration at Knightdale, North Carolina is 3.223 μg/m3.
The current carbon monoxide (CO) concentration at Knightdale, North Carolina is 0.102 ppm.
The current sulfur dioxide (SO2) concentration at Knightdale, North Carolina is 0.546 ppb.
The current ozone (O3) concentration at Knightdale, North Carolina is 33.936 ppm.
The current nitrogen dioxide (NO2) concentration at Knightdale, North Carolina is 1.861 ppb.
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