Hourly Weather | Today Wednesday, March 18, 2026
Framingham, Massachusetts
8 AM
Cloudy Weather
25°
Feels Like 18°
0
Humidity: 46%
UV Index: 1
Wind: 8 mph
9 AM
Cloudy Weather
27°
Feels Like 23°
0
Humidity: 41%
UV Index: 2
Wind: 8 mph
10 AM
Cloudy Weather
30°
Feels Like 27°
0
Humidity: 35%
UV Index: 3
Wind: 9 mph
11 AM
Cloudy Weather
32°
Feels Like 28°
0
Humidity: 31%
UV Index: 4
Wind: 9 mph
12 PM
Cloudy Weather
34°
Feels Like 34°
0
Humidity: 28%
UV Index: 4
Wind: 8 mph
1 PM
Cloudy Weather
36°
Feels Like 39°
0
Humidity: 26%
UV Index: 5
Wind: 7 mph
2 PM
Cloudy Weather
36°
Feels Like 43°
0
Humidity: 24%
UV Index: 4
Wind: 5 mph
3 PM
Cloudy Weather
36°
Feels Like 41°
0
Humidity: 23%
UV Index: 4
Wind: 6 mph
4 PM
Cloudy Weather
37°
Feels Like 37°
0
Humidity: 23%
UV Index: 3
Wind: 7 mph
5 PM
Cloudy Weather
37°
Feels Like 37°
0
Humidity: 23%
UV Index: 2
Wind: 7 mph
6 PM
Cloudy Weather
36°
Feels Like 34°
0
Humidity: 28%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 35%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
32°
Feels Like 28°
0
Humidity: 42%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
30°
Feels Like 27°
0
Humidity: 49%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 54%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
27°
Feels Like 23°
0
Humidity: 57%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.67 µg/m³
  • PM10: 1.37 µg/m³
  • O3: 0.048 ppm
  • NO2: 2 ppb
  • SO2: 0.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.74 µg/m³
  • PM10: 1.43 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.7 µg/m³
  • PM10: 1.38 µg/m³
  • O3: 0.047 ppm
  • NO2: 2.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.68 µg/m³
  • PM10: 1.33 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.7 µg/m³
  • PM10: 1.23 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.8 µg/m³
  • PM10: 1.32 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1 µg/m³
  • PM10: 1.51 µg/m³
  • O3: 0.052 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.32 µg/m³
  • PM10: 1.84 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

4 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.63 µg/m³
  • PM10: 2.16 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

5 PM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.82 µg/m³
  • PM10: 2.37 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 1.9 µg/m³
  • PM10: 2.45 µg/m³
  • O3: 0.054 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.98 µg/m³
  • PM10: 2.57 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2 µg/m³
  • PM10: 2.66 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.07 µg/m³
  • PM10: 2.84 µg/m³
  • O3: 0.050 ppm
  • NO2: 2.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.24 µg/m³
  • PM10: 3.13 µg/m³
  • O3: 0.049 ppm
  • NO2: 2.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.49 µg/m³
  • PM10: 3.53 µg/m³
  • O3: 0.048 ppm
  • NO2: 3.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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