Hourly Weather | Today Friday, December 5, 2025
Cambridge, Massachusetts
2 PM
Sunny Weather
25°
Feels Like 21°
0
Humidity: 34%
Wind: 8 mph
UV Index: 2
3 PM
Cloudy Weather
27°
Feels Like 23°
0
Humidity: 35%
Wind: 7 mph
UV Index: 1
4 PM
Cloudy Weather
25°
Feels Like 21°
0
Humidity: 40%
Wind: 6 mph
UV Index: 0
5 PM
Cloudy Night
25°
Feels Like 19°
0
Humidity: 46%
Wind: 6 mph
UV Index: 0
6 PM
Cloudy Night
23°
Feels Like 19°
0
Humidity: 52%
Wind: 6 mph
UV Index: 0
7 PM
Cloudy Night
23°
Feels Like 19°
0
Humidity: 63%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
25°
Feels Like 21°
0
Humidity: 65%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
25°
Feels Like 21°
0
Humidity: 70%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Weather
25°
Feels Like 21°
0
Humidity: 73%
Wind: 5 mph
UV Index: 0
11 PM
Cloudy Weather
25°
Feels Like 23°
0
Humidity: 75%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.56 µg/m³
  • PM10: 1.05 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.56 µg/m³
  • PM10: 0.99 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.58 µg/m³
  • PM10: 0.99 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.66 µg/m³
  • PM10: 1.1 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.82 µg/m³
  • PM10: 1.32 µg/m³
  • O3: 0.037 ppm
  • NO2: 3.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.02 µg/m³
  • PM10: 1.62 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

8 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.19 µg/m³
  • PM10: 1.86 µg/m³
  • O3: 0.037 ppm
  • NO2: 3.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

9 PM
34 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.26 µg/m³
  • PM10: 1.97 µg/m³
  • O3: 0.037 ppm
  • NO2: 3.3 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.32 µg/m³
  • PM10: 2.05 µg/m³
  • O3: 0.037 ppm
  • NO2: 3 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.32 µg/m³
  • PM10: 2.03 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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