Hourly Weather | Today Thursday, December 4, 2025
Quincy, Massachusetts
6 AM
Cloudy Night
34°
Feels Like 25°
0
Humidity: 71%
Wind: 9 mph
UV Index: 0
7 AM
Cloudy Weather
30°
Feels Like 21°
7
Humidity: 78%
Wind: 10 mph
UV Index: 0
8 AM
Cloudy Weather
32°
Feels Like 21°
7
Humidity: 78%
Wind: 12 mph
UV Index: 0
9 AM
Cloudy Weather
34°
Feels Like 25°
7
Humidity: 73%
Wind: 12 mph
UV Index: 1
10 AM
Cloudy Weather
36°
Feels Like 27°
7
Humidity: 69%
Wind: 13 mph
UV Index: 1
11 AM
Cloudy Weather
37°
Feels Like 27°
7
Humidity: 66%
Wind: 14 mph
UV Index: 1
12 PM
Cloudy Weather
39°
Feels Like 28°
10
Humidity: 62%
Wind: 15 mph
UV Index: 1
1 PM
Snowy Weather
39°
Feels Like 27°
44
Humidity: 60%
Wind: 16 mph
UV Index: 1
2 PM
Cloudy Weather
39°
Feels Like 28°
40
Humidity: 55%
Wind: 17 mph
UV Index: 1
3 PM
Cloudy Weather
41°
Feels Like 28°
31
Humidity: 49%
Wind: 20 mph
UV Index: 1
4 PM
Cloudy Weather
37°
Feels Like 23°
19
Humidity: 51%
Wind: 21 mph
UV Index: 0
5 PM
Cloudy Night
34°
Feels Like 18°
19
Humidity: 50%
Wind: 21 mph
UV Index: 0
6 PM
Cloudy Night
30°
Feels Like 14°
13
Humidity: 48%
Wind: 21 mph
UV Index: 0
7 PM
Night
28°
Feels Like 10°
0
Humidity: 47%
Wind: 18 mph
UV Index: 0
8 PM
Night
27°
Feels Like
0
Humidity: 46%
Wind: 17 mph
UV Index: 0
9 PM
Night
23°
Feels Like
0
Humidity: 43%
Wind: 16 mph
UV Index: 0
10 PM
Night
21°
Feels Like
0
Humidity: 41%
Wind: 15 mph
UV Index: 0
11 PM
Night
19°
Feels Like
0
Humidity: 41%
Wind: 14 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.93 µg/m³
  • PM10: 20.17 µg/m³
  • O3: 0.021 ppm
  • NO2: 15.9 ppb
  • SO2: 2.7 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

7 AM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.54 µg/m³
  • PM10: 20.57 µg/m³
  • O3: 0.021 ppm
  • NO2: 14.7 ppb
  • SO2: 2.8 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

8 AM
57 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.47 µg/m³
  • PM10: 20.25 µg/m³
  • O3: 0.021 ppm
  • NO2: 14.1 ppb
  • SO2: 2.8 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

9 AM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.6 µg/m³
  • PM10: 19.11 µg/m³
  • O3: 0.025 ppm
  • NO2: 13.5 ppb
  • SO2: 2.6 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

10 AM
53 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.29 µg/m³
  • PM10: 17.54 µg/m³
  • O3: 0.027 ppm
  • NO2: 12.1 ppb
  • SO2: 2.5 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

11 AM
46 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 11.02 µg/m³
  • PM10: 14.76 µg/m³
  • O3: 0.029 ppm
  • NO2: 11.3 ppb
  • SO2: 2.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

12 PM
41 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.92 µg/m³
  • PM10: 13.43 µg/m³
  • O3: 0.030 ppm
  • NO2: 11.3 ppb
  • SO2: 2.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

1 PM
38 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.17 µg/m³
  • PM10: 12.37 µg/m³
  • O3: 0.029 ppm
  • NO2: 12 ppb
  • SO2: 1.8 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

2 PM
33 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 7.81 µg/m³
  • PM10: 10.21 µg/m³
  • O3: 0.028 ppm
  • NO2: 12.7 ppb
  • SO2: 1.4 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.75 µg/m³
  • PM10: 7.38 µg/m³
  • O3: 0.027 ppm
  • NO2: 12.2 ppb
  • SO2: 1.1 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.77 µg/m³
  • PM10: 5.05 µg/m³
  • O3: 0.027 ppm
  • NO2: 10.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.95 µg/m³
  • PM10: 2.92 µg/m³
  • O3: 0.028 ppm
  • NO2: 7.3 ppb
  • SO2: 0.6 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.9 µg/m³
  • PM10: 1.64 µg/m³
  • O3: 0.032 ppm
  • NO2: 4.6 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.56 µg/m³
  • PM10: 1.14 µg/m³
  • O3: 0.038 ppm
  • NO2: 3 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.97 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.2 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.92 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.8 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.89 µg/m³
  • O3: 0.041 ppm
  • NO2: 1.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.87 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.3 ppb
  • SO2: 0.1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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