Chapel Hill, North Carolina
Hourly Air Quality Forecast - AQI (US EPA)
Moderate air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
4.1 µg/m³
- PM10:
5.03 µg/m³
- O3:
0.060 ppm
- NO2:
0.4 ppb
- SO2:
0.7 ppb
- CO:
0.12 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:
O3
Details
Pollutant Concentrations:
- PM2.5:
4.01 µg/m³
- PM10:
4.86 µg/m³
- O3:
0.062 ppm
- NO2:
0.4 ppb
- SO2:
0.7 ppb
- CO:
0.12 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:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.69 µg/m³
- PM10:
4.48 µg/m³
- O3:
0.063 ppm
- NO2:
0.4 ppb
- SO2:
0.6 ppb
- CO:
0.12 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:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.46 µg/m³
- PM10:
4.22 µg/m³
- O3:
0.062 ppm
- NO2:
0.4 ppb
- SO2:
0.5 ppb
- CO:
0.12 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:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.39 µg/m³
- PM10:
4.32 µg/m³
- O3:
0.061 ppm
- NO2:
0.6 ppb
- SO2:
0.5 ppb
- CO:
0.12 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:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.43 µg/m³
- PM10:
4.7 µg/m³
- O3:
0.059 ppm
- NO2:
1 ppb
- SO2:
0.5 ppb
- CO:
0.13 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:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.42 µg/m³
- PM10:
5.02 µg/m³
- O3:
0.057 ppm
- NO2:
1.3 ppb
- SO2:
0.5 ppb
- CO:
0.13 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:
O3
Details
Pollutant Concentrations:
- PM2.5:
3.31 µg/m³
- PM10:
5.11 µg/m³
- O3:
0.054 ppm
- NO2:
1.3 ppb
- SO2:
0.5 ppb
- CO:
0.13 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:
3.19 µg/m³
- PM10:
5.06 µg/m³
- O3:
0.053 ppm
- NO2:
1.3 ppb
- SO2:
0.5 ppb
- CO:
0.13 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:
3.07 µg/m³
- PM10:
4.9 µg/m³
- O3:
0.053 ppm
- NO2:
1.3 ppb
- SO2:
0.5 ppb
- CO:
0.14 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
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