Hourly Weather | Today Monday, February 2, 2026
Cambridge, Massachusetts
2 AM
Cloudy Night
14°
Feels Like -9°
0
Humidity: 60%
Wind: 20 mph
UV Index: 0
3 AM
Cloudy Night
14°
Feels Like -9°
0
Humidity: 61%
Wind: 20 mph
UV Index: 0
4 AM
Cloudy Night
12°
Feels Like -9°
0
Humidity: 61%
Wind: 18 mph
UV Index: 0
5 AM
Cloudy Night
12°
Feels Like -9°
0
Humidity: 62%
Wind: 18 mph
UV Index: 0
6 AM
Cloudy Night
10°
Feels Like -11°
0
Humidity: 63%
Wind: 17 mph
UV Index: 0
7 AM
Cloudy Weather
10°
Feels Like
0
Humidity: 67%
Wind: 6 mph
UV Index: 0
8 AM
Cloudy Weather
12°
Feels Like
0
Humidity: 65%
Wind: 7 mph
UV Index: 1
9 AM
Cloudy Weather
16°
Feels Like 12°
0
Humidity: 61%
Wind: 7 mph
UV Index: 2
10 AM
Cloudy Weather
19°
Feels Like 16°
0
Humidity: 58%
Wind: 8 mph
UV Index: 2
11 AM
Sunny Weather
21°
Feels Like 19°
0
Humidity: 55%
Wind: 8 mph
UV Index: 2
12 PM
Sunny Weather
25°
Feels Like 21°
0
Humidity: 54%
Wind: 8 mph
UV Index: 3
1 PM
Sunny Weather
28°
Feels Like 25°
0
Humidity: 52%
Wind: 8 mph
UV Index: 2
2 PM
Sunny Weather
28°
Feels Like 27°
0
Humidity: 52%
Wind: 8 mph
UV Index: 2
3 PM
Sunny Weather
30°
Feels Like 27°
0
Humidity: 50%
Wind: 8 mph
UV Index: 2
4 PM
Sunny Weather
28°
Feels Like 23°
0
Humidity: 53%
Wind: 8 mph
UV Index: 1
5 PM
Sunny Weather
27°
Feels Like 19°
0
Humidity: 57%
Wind: 8 mph
UV Index: 0
6 PM
Night
23°
Feels Like 18°
0
Humidity: 60%
Wind: 7 mph
UV Index: 0
7 PM
Night
21°
Feels Like 16°
0
Humidity: 62%
Wind: 6 mph
UV Index: 0
8 PM
Night
18°
Feels Like 14°
0
Humidity: 64%
Wind: 6 mph
UV Index: 0
9 PM
Night
16°
Feels Like 12°
0
Humidity: 66%
Wind: 6 mph
UV Index: 0
10 PM
Night
16°
Feels Like 10°
0
Humidity: 67%
Wind: 6 mph
UV Index: 0
11 PM
Night
12°
Feels Like
0
Humidity: 68%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

2 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.54 µg/m³
  • PM10: 3.08 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.44 µg/m³
  • PM10: 2.96 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

4 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.34 µg/m³
  • PM10: 2.84 µg/m³
  • O3: 0.040 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.

5 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.24 µg/m³
  • PM10: 2.71 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

6 AM
37 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 2.18 µg/m³
  • PM10: 2.64 µg/m³
  • O3: 0.040 ppm
  • NO2: 1.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.2 µg/m³
  • PM10: 2.7 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.26 µg/m³
  • PM10: 2.82 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.33 µg/m³
  • PM10: 2.95 µg/m³
  • O3: 0.039 ppm
  • NO2: 3 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.46 µg/m³
  • PM10: 3.14 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.9 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.58 µg/m³
  • PM10: 3.26 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.83 µg/m³
  • PM10: 3.5 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.26 µg/m³
  • PM10: 3.92 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.72 µg/m³
  • PM10: 4.4 µg/m³
  • O3: 0.043 ppm
  • NO2: 2.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.05 µg/m³
  • PM10: 4.75 µg/m³
  • O3: 0.044 ppm
  • NO2: 3 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.06 µg/m³
  • PM10: 4.76 µg/m³
  • O3: 0.043 ppm
  • NO2: 3.7 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.93 µg/m³
  • PM10: 4.65 µg/m³
  • O3: 0.043 ppm
  • NO2: 4.6 ppb
  • SO2: 0.5 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.84 µg/m³
  • PM10: 4.61 µg/m³
  • O3: 0.042 ppm
  • NO2: 5.2 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.79 µg/m³
  • PM10: 4.6 µg/m³
  • O3: 0.041 ppm
  • NO2: 5.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.79 µg/m³
  • PM10: 4.67 µg/m³
  • O3: 0.040 ppm
  • NO2: 5.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.99 µg/m³
  • PM10: 4.95 µg/m³
  • O3: 0.039 ppm
  • NO2: 5.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.29 µg/m³
  • PM10: 5.33 µg/m³
  • O3: 0.039 ppm
  • NO2: 5.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 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: 4.58 µg/m³
  • PM10: 5.67 µg/m³
  • O3: 0.038 ppm
  • NO2: 5.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

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