Somerville, Massachusetts
Hourly Air Quality Forecast - AQI (US EPA)
Good air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
4.08 µg/m³
- PM10:
5.61 µg/m³
- O3:
0.019 ppm
- NO2:
6.4 ppb
- SO2:
0.2 ppb
- CO:
0.19 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:
4.14 µg/m³
- PM10:
5.67 µg/m³
- O3:
0.019 ppm
- NO2:
6.3 ppb
- SO2:
0.2 ppb
- CO:
0.19 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:
4.17 µg/m³
- PM10:
5.75 µg/m³
- O3:
0.022 ppm
- NO2:
5.1 ppb
- SO2:
0.3 ppb
- CO:
0.20 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:
3.98 µg/m³
- PM10:
5.55 µg/m³
- O3:
0.028 ppm
- NO2:
4.5 ppb
- SO2:
0.4 ppb
- CO:
0.19 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:
4.06 µg/m³
- PM10:
5.71 µg/m³
- O3:
0.031 ppm
- NO2:
4.3 ppb
- SO2:
0.4 ppb
- CO:
0.19 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:
4.51 µg/m³
- PM10:
6.27 µg/m³
- O3:
0.036 ppm
- NO2:
4.1 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:
3.64 µg/m³
- PM10:
5.02 µg/m³
- O3:
0.051 ppm
- NO2:
2 ppb
- SO2:
0.5 ppb
- CO:
0.15 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate air quality
Dominant pollutant:
O3
Details
Pollutant Concentrations:
- PM2.5:
4.02 µg/m³
- PM10:
5.37 µg/m³
- O3:
0.056 ppm
- NO2:
1.2 ppb
- SO2:
0.5 ppb
- CO:
0.14 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:
4.28 µg/m³
- PM10:
5.68 µg/m³
- O3:
0.059 ppm
- NO2:
0.8 ppb
- SO2:
0.4 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:
4.17 µg/m³
- PM10:
5.62 µg/m³
- O3:
0.061 ppm
- NO2:
0.7 ppb
- SO2:
0.4 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:
3.81 µg/m³
- PM10:
5.26 µg/m³
- O3:
0.061 ppm
- NO2:
0.8 ppb
- SO2:
0.4 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:
3.34 µg/m³
- PM10:
4.75 µg/m³
- O3:
0.061 ppm
- NO2:
0.9 ppb
- SO2:
0.4 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:
2.94 µg/m³
- PM10:
4.34 µg/m³
- O3:
0.059 ppm
- NO2:
1.5 ppb
- SO2:
0.4 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:
2.61 µg/m³
- PM10:
4.04 µg/m³
- O3:
0.056 ppm
- NO2:
2.5 ppb
- SO2:
0.4 ppb
- CO:
0.14 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:
2.32 µg/m³
- PM10:
3.82 µg/m³
- O3:
0.053 ppm
- NO2:
3.2 ppb
- SO2:
0.4 ppb
- CO:
0.14 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:
2.02 µg/m³
- PM10:
3.58 µg/m³
- O3:
0.050 ppm
- NO2:
3.4 ppb
- SO2:
0.5 ppb
- CO:
0.14 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:
1.78 µg/m³
- PM10:
3.4 µg/m³
- O3:
0.049 ppm
- NO2:
3.4 ppb
- SO2:
0.5 ppb
- CO:
0.15 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:
1.63 µg/m³
- PM10:
3.27 µg/m³
- O3:
0.048 ppm
- NO2:
3.3 ppb
- SO2:
0.5 ppb
- CO:
0.15 ppm
Health Recommendations:
Air quality is considered satisfactory, and air pollution poses little or no risk.
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