Chapel Hill, North Carolina
Hourly Air Quality Forecast - AQI (US EPA)
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
16.68 µg/m³
- PM10:
24.85 µg/m³
- O3:
0.013 ppm
- NO2:
8.7 ppb
- SO2:
0.5 ppb
- CO:
0.26 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
17.92 µg/m³
- PM10:
26.74 µg/m³
- O3:
0.012 ppm
- NO2:
8.9 ppb
- SO2:
0.4 ppb
- CO:
0.27 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
19.11 µg/m³
- PM10:
28.59 µg/m³
- O3:
0.011 ppm
- NO2:
9.4 ppb
- SO2:
0.4 ppb
- CO:
0.27 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
20.22 µg/m³
- PM10:
30.33 µg/m³
- O3:
0.010 ppm
- NO2:
10.3 ppb
- SO2:
0.4 ppb
- CO:
0.29 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
20.65 µg/m³
- PM10:
30.98 µg/m³
- O3:
0.008 ppm
- NO2:
11.5 ppb
- SO2:
0.3 ppb
- CO:
0.30 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
20.34 µg/m³
- PM10:
30.13 µg/m³
- O3:
0.010 ppm
- NO2:
8.9 ppb
- SO2:
0.3 ppb
- CO:
0.31 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
19.84 µg/m³
- PM10:
28.5 µg/m³
- O3:
0.012 ppm
- NO2:
6.3 ppb
- SO2:
0.2 ppb
- CO:
0.31 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
18.54 µg/m³
- PM10:
21.91 µg/m³
- O3:
0.031 ppm
- NO2:
3.4 ppb
- SO2:
1.4 ppb
- CO:
0.21 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
18.74 µg/m³
- PM10:
21.69 µg/m³
- O3:
0.034 ppm
- NO2:
2.6 ppb
- SO2:
1.2 ppb
- CO:
0.20 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
20.42 µg/m³
- PM10:
23.41 µg/m³
- O3:
0.035 ppm
- NO2:
2.4 ppb
- SO2:
1 ppb
- CO:
0.21 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
19.27 µg/m³
- PM10:
21.82 µg/m³
- O3:
0.040 ppm
- NO2:
2.1 ppb
- SO2:
0.8 ppb
- CO:
0.20 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
16.22 µg/m³
- PM10:
18.36 µg/m³
- O3:
0.043 ppm
- NO2:
1.9 ppb
- SO2:
0.6 ppb
- CO:
0.19 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
14.42 µg/m³
- PM10:
16.39 µg/m³
- O3:
0.043 ppm
- NO2:
2 ppb
- SO2:
0.5 ppb
- CO:
0.18 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
13.27 µg/m³
- PM10:
15.18 µg/m³
- O3:
0.043 ppm
- NO2:
2.2 ppb
- SO2:
0.5 ppb
- CO:
0.17 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
12.76 µg/m³
- PM10:
14.69 µg/m³
- O3:
0.041 ppm
- NO2:
2.7 ppb
- SO2:
0.4 ppb
- CO:
0.18 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Moderate air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
12.38 µg/m³
- PM10:
14.34 µg/m³
- O3:
0.039 ppm
- NO2:
3.1 ppb
- SO2:
0.4 ppb
- CO:
0.18 ppm
Health Recommendations:
Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.
Good air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
12.16 µg/m³
- PM10:
14.24 µg/m³
- O3:
0.037 ppm
- NO2:
3.4 ppb
- SO2:
0.4 ppb
- CO:
0.18 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
10.96 µg/m³
- PM10:
13.1 µg/m³
- O3:
0.036 ppm
- NO2:
3.4 ppb
- SO2:
0.4 ppb
- CO:
0.18 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
7.07 µg/m³
- PM10:
8.84 µg/m³
- O3:
0.038 ppm
- NO2:
3.1 ppb
- SO2:
0.5 ppb
- CO:
0.18 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.68 µg/m³
- PM10:
4.87 µg/m³
- O3:
0.039 ppm
- NO2:
2.6 ppb
- SO2:
0.5 ppb
- CO:
0.17 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.