Stay updated with real-time air quality in Holly Springs, 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)
33
Good
Holly Springs, North Carolina
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.20 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.66 μg/m³
0
55
155
255
425
605+
28.87 ppb
0
55
71
86
201
201+
0.32 ppb
0
36
76
186
605
1005+
4.11 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Holly Springs, North Carolina
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AQI 33
Good
5.96μg/m³
PM2.5
20.97μg/m³
PM10
28.74ppb
O3
0.32ppb
SO2
4.05ppb
NO2
0.26ppm
CO
AQI 38
Good
7.46μg/m³
PM2.5
11.16μg/m³
PM10
27.79ppb
O3
0.31ppb
SO2
4.43ppb
NO2
0.27ppm
CO
AQI 52
Moderate
9.71μg/m³
PM2.5
35.09μg/m³
PM10
26.96ppb
O3
0.31ppb
SO2
6.10ppb
NO2
0.29ppm
CO
AQI 52
Moderate
9.88μg/m³
PM2.5
35.14μg/m³
PM10
26.71ppb
O3
0.31ppb
SO2
6.28ppb
NO2
0.29ppm
CO
AQI 33
Good
6.06μg/m³
PM2.5
14.87μg/m³
PM10
28.17ppb
O3
0.32ppb
SO2
3.42ppb
NO2
0.23ppm
CO
AQI 38
Good
7.21μg/m³
PM2.5
17.29μg/m³
PM10
28.47ppb
O3
0.31ppb
SO2
2.93ppb
NO2
0.23ppm
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 Holly Springs, North Carolina is updated every hour.
The worst air quality in Holly Springs, North Carolina in the last 24 hours was observed at 11:00:00 on 2026-07-22.
In the last 24 hrs, the best air quality in Holly Springs, North Carolina was observed at 02:00:00 on 2026-07-23.
The current air quality in Holly Springs, North Carolina is 33, categorized as Good based on real-time data.
The most common pollutant in Holly Springs, North Carolina is PM2.5.
If the air quality in Holly Springs, North Carolina is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Holly Springs, North Carolina is 6.199 μg/m3.
The current PM10 concentration at Holly Springs, North Carolina is 16.662 μg/m3.
The current carbon monoxide (CO) concentration at Holly Springs, North Carolina is 0.265 ppm.
The current sulfur dioxide (SO2) concentration at Holly Springs, North Carolina is 0.32 ppb.
The current ozone (O3) concentration at Holly Springs, North Carolina is 28.874 ppm.
The current nitrogen dioxide (NO2) concentration at Holly Springs, North Carolina is 4.113 ppb.
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