Hourly Weather | Today Wednesday, November 12, 2025
Cambridge, Massachusetts
7 AM
Snowy Weather
36°
Feels Like 21°
51
Humidity: 74%
Wind: 15 mph
UV Index: 0
8 AM
Cloudy Weather
36°
Feels Like 23°
44
Humidity: 72%
Wind: 15 mph
UV Index: 0
9 AM
Cloudy Weather
37°
Feels Like 25°
37
Humidity: 71%
Wind: 17 mph
UV Index: 0
10 AM
Cloudy Weather
39°
Feels Like 27°
44
Humidity: 68%
Wind: 18 mph
UV Index: 1
11 AM
Snowy Weather
41°
Feels Like 27°
51
Humidity: 62%
Wind: 18 mph
UV Index: 1
12 PM
Cloudy Weather
43°
Feels Like 30°
44
Humidity: 57%
Wind: 20 mph
UV Index: 1
1 PM
Cloudy Weather
45°
Feels Like 32°
0
Humidity: 54%
Wind: 21 mph
UV Index: 1
2 PM
Cloudy Weather
45°
Feels Like 34°
0
Humidity: 52%
Wind: 20 mph
UV Index: 1
3 PM
Cloudy Weather
45°
Feels Like 34°
0
Humidity: 56%
Wind: 17 mph
UV Index: 0
4 PM
Cloudy Weather
43°
Feels Like 32°
0
Humidity: 58%
Wind: 16 mph
UV Index: 0
5 PM
Cloudy Night
41°
Feels Like 28°
0
Humidity: 64%
Wind: 17 mph
UV Index: 0
6 PM
Cloudy Night
39°
Feels Like 28°
0
Humidity: 67%
Wind: 17 mph
UV Index: 0
7 PM
Cloudy Night
39°
Feels Like 27°
0
Humidity: 69%
Wind: 20 mph
UV Index: 0
8 PM
Cloudy Night
39°
Feels Like 25°
0
Humidity: 72%
Wind: 20 mph
UV Index: 0
9 PM
Cloudy Night
37°
Feels Like 25°
0
Humidity: 73%
Wind: 20 mph
UV Index: 0
10 PM
Cloudy Night
37°
Feels Like 25°
0
Humidity: 75%
Wind: 20 mph
UV Index: 0
11 PM
Cloudy Night
37°
Feels Like 23°
0
Humidity: 78%
Wind: 20 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.52 µg/m³
  • PM10: 3.51 µg/m³
  • O3: 0.031 ppm
  • NO2: 4 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 AM
30 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.73 µg/m³
  • PM10: 3.77 µg/m³
  • O3: 0.032 ppm
  • NO2: 4.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 AM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.64 µg/m³
  • PM10: 3.72 µg/m³
  • O3: 0.033 ppm
  • NO2: 4.6 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 AM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.55 µg/m³
  • PM10: 3.69 µg/m³
  • O3: 0.034 ppm
  • NO2: 4.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 AM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.48 µg/m³
  • PM10: 3.65 µg/m³
  • O3: 0.035 ppm
  • NO2: 4.3 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

12 PM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.7 µg/m³
  • PM10: 3.92 µg/m³
  • O3: 0.035 ppm
  • NO2: 4.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

1 PM
32 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.14 µg/m³
  • PM10: 4.51 µg/m³
  • O3: 0.034 ppm
  • NO2: 4.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

2 PM
31 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.93 µg/m³
  • PM10: 5.68 µg/m³
  • O3: 0.033 ppm
  • NO2: 6 ppb
  • SO2: 1 ppb
  • CO: 0.13 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

3 PM
29 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.01 µg/m³
  • PM10: 7.26 µg/m³
  • O3: 0.031 ppm
  • NO2: 8.1 ppb
  • SO2: 1.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

4 PM
26 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.8 µg/m³
  • PM10: 8.38 µg/m³
  • O3: 0.028 ppm
  • NO2: 10.4 ppb
  • SO2: 1.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

5 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.17 µg/m³
  • PM10: 8.78 µg/m³
  • O3: 0.026 ppm
  • NO2: 11.5 ppb
  • SO2: 1.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

6 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.43 µg/m³
  • PM10: 8.83 µg/m³
  • O3: 0.026 ppm
  • NO2: 11 ppb
  • SO2: 1.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

7 PM
24 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.6 µg/m³
  • PM10: 8.68 µg/m³
  • O3: 0.026 ppm
  • NO2: 10 ppb
  • SO2: 1.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

8 PM
24 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.7 µg/m³
  • PM10: 8.57 µg/m³
  • O3: 0.025 ppm
  • NO2: 9.5 ppb
  • SO2: 1.3 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

9 PM
24 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.74 µg/m³
  • PM10: 8.51 µg/m³
  • O3: 0.024 ppm
  • NO2: 9.5 ppb
  • SO2: 1.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

10 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 7.72 µg/m³
  • O3: 0.024 ppm
  • NO2: 9.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

11 PM
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 6.48 µg/m³
  • O3: 0.023 ppm
  • NO2: 8.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.