Hourly Weather | Today Wednesday, October 22, 2025
Quincy, Massachusetts
8 AM
Rainy Weather
57°
Feels Like 52°
54
Humidity: 91%
Wind: 10 mph
UV Index: 0
9 AM
Cloudy Weather
59°
Feels Like 54°
49
Humidity: 88%
Wind: 12 mph
UV Index: 2
10 AM
Cloudy Weather
61°
Feels Like 55°
49
Humidity: 85%
Wind: 13 mph
UV Index: 4
11 AM
Rainy Weather
63°
Feels Like 55°
61
Humidity: 80%
Wind: 14 mph
UV Index: 5
12 PM
Cloudy Weather
64°
Feels Like 61°
49
Humidity: 72%
Wind: 15 mph
UV Index: 10
1 PM
Cloudy Weather
66°
Feels Like 63°
39
Humidity: 63%
Wind: 16 mph
UV Index: 14
2 PM
Cloudy Weather
68°
Feels Like 66°
20
Humidity: 55%
Wind: 16 mph
UV Index: 30
3 PM
Cloudy Weather
66°
Feels Like 64°
20
Humidity: 54%
Wind: 16 mph
UV Index: 24
4 PM
Cloudy Weather
66°
Feels Like 64°
20
Humidity: 56%
Wind: 15 mph
UV Index: 18
5 PM
Cloudy Weather
63°
Feels Like 61°
20
Humidity: 58%
Wind: 14 mph
UV Index: 10
6 PM
Cloudy Night
61°
Feels Like 55°
20
Humidity: 63%
Wind: 14 mph
UV Index: 0
7 PM
Cloudy Night
59°
Feels Like 54°
13
Humidity: 65%
Wind: 13 mph
UV Index: 0
8 PM
Cloudy Night
57°
Feels Like 50°
0
Humidity: 68%
Wind: 15 mph
UV Index: 0
9 PM
Cloudy Night
55°
Feels Like 48°
0
Humidity: 68%
Wind: 15 mph
UV Index: 0
10 PM
Cloudy Night
55°
Feels Like 46°
0
Humidity: 69%
Wind: 15 mph
UV Index: 0
11 PM
Cloudy Night
54°
Feels Like 46°
0
Humidity: 69%
Wind: 15 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 4.95 µg/m³
  • PM10: 6.28 µg/m³
  • O3: 0.050 ppm
  • NO2: 0.5 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.6 µg/m³
  • PM10: 5.47 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.10 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: 4.81 µg/m³
  • PM10: 5.75 µg/m³
  • O3: 0.048 ppm
  • NO2: 1 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.3 µg/m³
  • PM10: 6.59 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.19 µg/m³
  • PM10: 6.93 µg/m³
  • O3: 0.045 ppm
  • NO2: 1.8 ppb
  • SO2: 0.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.62 µg/m³
  • PM10: 6.58 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.45 µg/m³
  • PM10: 6.4 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.6 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.32 µg/m³
  • PM10: 6.01 µg/m³
  • O3: 0.051 ppm
  • NO2: 1.5 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.16 µg/m³
  • PM10: 5.77 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.7 ppb
  • SO2: 0.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.78 µg/m³
  • PM10: 5.45 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.2 µg/m³
  • PM10: 4.93 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.9 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 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: 2.69 µg/m³
  • PM10: 4.48 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.28 µg/m³
  • PM10: 4.14 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.95 µg/m³
  • PM10: 3.81 µg/m³
  • O3: 0.035 ppm
  • NO2: 4.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.7 µg/m³
  • PM10: 3.53 µg/m³
  • O3: 0.033 ppm
  • NO2: 4.7 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.53 µg/m³
  • PM10: 3.33 µg/m³
  • O3: 0.032 ppm
  • NO2: 4.8 ppb
  • SO2: 1 ppb
  • CO: 0.12 ppm

Health Recommendations:

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