Hourly Weather | Today › Friday, October 23, 2026
Boston, Massachusetts
10 AM
Sunny Weather
46°
Feels Like 41°
0
Humidity: 51%
UV Index: 2
Wind: 12 mph
11 AM
Sunny Weather
48°
Feels Like 45°
0
Humidity: 48%
UV Index: 2
Wind: 12 mph
12 PM
Sunny Weather
52°
Feels Like 48°
0
Humidity: 43%
UV Index: 3
Wind: 12 mph
1 PM
Sunny Weather
54°
Feels Like 52°
0
Humidity: 39%
UV Index: 3
Wind: 10 mph
2 PM
Cloudy Weather
54°
Feels Like 54°
0
Humidity: 38%
UV Index: 3
Wind: 10 mph
3 PM
Sunny Weather
55°
Feels Like 55°
0
Humidity: 36%
UV Index: 2
Wind: 9 mph
4 PM
Sunny Weather
55°
Feels Like 54°
0
Humidity: 38%
UV Index: 2
Wind: 9 mph
5 PM
Sunny Weather
54°
Feels Like 52°
0
Humidity: 40%
UV Index: 1
Wind: 8 mph
6 PM
Night
52°
Feels Like 48°
0
Humidity: 46%
UV Index: 0
Wind: 7 mph
7 PM
Night
48°
Feels Like 46°
0
Humidity: 53%
UV Index: 0
Wind: 6 mph
8 PM
Night
46°
Feels Like 45°
0
Humidity: 59%
UV Index: 0
Wind: 5 mph
9 PM
Night
45°
Feels Like 43°
0
Humidity: 63%
UV Index: 0
Wind: 5 mph
10 PM
Night
43°
Feels Like 43°
0
Humidity: 66%
UV Index: 0
Wind: 5 mph
11 PM
Night
43°
Feels Like 39°
0
Humidity: 68%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.59 µg/m³
  • PM10: 1.27 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.57 µg/m³
  • PM10: 1.28 µg/m³
  • O3: 0.031 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.57 µg/m³
  • PM10: 1.26 µg/m³
  • O3: 0.033 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.66 µg/m³
  • PM10: 1.32 µg/m³
  • O3: 0.035 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 0.8 µg/m³
  • PM10: 1.45 µg/m³
  • O3: 0.036 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.94 µg/m³
  • PM10: 1.57 µg/m³
  • O3: 0.037 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.03 µg/m³
  • PM10: 1.64 µg/m³
  • O3: 0.038 ppm
  • NO2: 1.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.04 µg/m³
  • PM10: 1.65 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.09 µg/m³
  • PM10: 1.79 µg/m³
  • O3: 0.034 ppm
  • NO2: 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.

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

Pollutant Concentrations:

  • PM2.5: 1.24 µg/m³
  • PM10: 2.12 µg/m³
  • O3: 0.030 ppm
  • NO2: 6.4 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.4 µg/m³
  • PM10: 2.5 µg/m³
  • O3: 0.027 ppm
  • NO2: 8.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.53 µg/m³
  • PM10: 2.83 µg/m³
  • O3: 0.026 ppm
  • NO2: 9.1 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.65 µg/m³
  • PM10: 3.09 µg/m³
  • O3: 0.025 ppm
  • NO2: 9.4 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
22 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 1.76 µg/m³
  • PM10: 3.26 µg/m³
  • O3: 0.024 ppm
  • NO2: 9.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.19 ppm

Health Recommendations:

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