Hourly Air Quality Forecast - AQI (US EPA)
Unhealthy air quality for sensitive groups
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
47.06 µg/m³
- PM10:
47.64 µg/m³
- O3:
0.030 ppm
- NO2:
2.3 ppb
- SO2:
0.2 ppb
- CO:
0.54 ppm
Health Recommendations:
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Unhealthy air quality for sensitive groups
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
50.44 µg/m³
- PM10:
50.95 µg/m³
- O3:
0.028 ppm
- NO2:
2.2 ppb
- SO2:
0.2 ppb
- CO:
0.56 ppm
Health Recommendations:
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Unhealthy air quality for sensitive groups
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
55.14 µg/m³
- PM10:
55.63 µg/m³
- O3:
0.027 ppm
- NO2:
2.3 ppb
- SO2:
0.2 ppb
- CO:
0.59 ppm
Health Recommendations:
Members of sensitive groups may experience health effects. The general public is less likely to be affected.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
61.52 µg/m³
- PM10:
62.04 µg/m³
- O3:
0.028 ppm
- NO2:
2.6 ppb
- SO2:
0.3 ppb
- CO:
0.64 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
68.97 µg/m³
- PM10:
69.57 µg/m³
- O3:
0.032 ppm
- NO2:
3.1 ppb
- SO2:
0.3 ppb
- CO:
0.70 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
76.96 µg/m³
- PM10:
77.8 µg/m³
- O3:
0.037 ppm
- NO2:
3.3 ppb
- SO2:
0.3 ppb
- CO:
0.76 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
86.79 µg/m³
- PM10:
88.1 µg/m³
- O3:
0.045 ppm
- NO2:
3.2 ppb
- SO2:
0.4 ppb
- CO:
0.82 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
110.61 µg/m³
- PM10:
112.45 µg/m³
- O3:
0.058 ppm
- NO2:
2.4 ppb
- SO2:
0.5 ppb
- CO:
0.97 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
131.61 µg/m³
- PM10:
134.12 µg/m³
- O3:
0.066 ppm
- NO2:
2.5 ppb
- SO2:
0.7 ppb
- CO:
1.10 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
145.54 µg/m³
- PM10:
148.56 µg/m³
- O3:
0.074 ppm
- NO2:
2.4 ppb
- SO2:
0.7 ppb
- CO:
1.17 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
149.94 µg/m³
- PM10:
152.81 µg/m³
- O3:
0.083 ppm
- NO2:
2 ppb
- SO2:
0.7 ppb
- CO:
1.18 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
142.24 µg/m³
- PM10:
145.08 µg/m³
- O3:
0.087 ppm
- NO2:
1.9 ppb
- SO2:
0.7 ppb
- CO:
1.15 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
124.76 µg/m³
- PM10:
127.6 µg/m³
- O3:
0.089 ppm
- NO2:
1.8 ppb
- SO2:
0.6 ppb
- CO:
1.09 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
104.16 µg/m³
- PM10:
107.14 µg/m³
- O3:
0.089 ppm
- NO2:
2.1 ppb
- SO2:
0.5 ppb
- CO:
1.03 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
88.49 µg/m³
- PM10:
91.68 µg/m³
- O3:
0.084 ppm
- NO2:
2.6 ppb
- SO2:
0.5 ppb
- CO:
0.97 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
82.1 µg/m³
- PM10:
85.32 µg/m³
- O3:
0.078 ppm
- NO2:
2.9 ppb
- SO2:
0.5 ppb
- CO:
0.92 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
80.93 µg/m³
- PM10:
84.06 µg/m³
- O3:
0.071 ppm
- NO2:
2.9 ppb
- SO2:
0.5 ppb
- CO:
0.87 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
80.15 µg/m³
- PM10:
82.79 µg/m³
- O3:
0.064 ppm
- NO2:
2.9 ppb
- SO2:
0.5 ppb
- CO:
0.83 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Unhealthy air quality
Dominant pollutant:
PM2.5
Details
Pollutant Concentrations:
- PM2.5:
75.06 µg/m³
- PM10:
76.88 µg/m³
- O3:
0.055 ppm
- NO2:
2.9 ppb
- SO2:
0.5 ppb
- CO:
0.76 ppm
Health Recommendations:
Everyone may begin to experience health effects; sensitive groups may experience more serious effects.
Weather Alerts and Warnings for Cambridge
Air Quality Alert
Air Quality Alert issued July 15 at 4:34PM EDT by NWS Boston/Norton MA
Jul 15, 4:34 PM
→ Jul 16, 12:00 PM
The Massachusetts Department of Environmental Protection has issued
an Air Quality Alert for Fine Particulates, until midnight EDT
Thursday night.
An Air Quality Alert day means that Fine Particulates concentrations
within the region may approach or exceed levels that are Unhealthy
for Sensitive Groups.
Air is unhealthy for sensitive children and adults, such as those
with asthma, lung or heart disease, and older adults. Sensitive
children and adults should limit prolonged outdoor activity.
For additional information, please visit the Massachusetts
Department of Environmental Protection website at:
https://mass.gov/dep/massair/forecast
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