Hourly Weather | Today Sunday, January 4, 2026
Boston, Massachusetts
9 PM
Cloudy Weather
25°
Feels Like 18°
0
Humidity: 62%
Wind: 8 mph
UV Index: 0
10 PM
Cloudy Weather
27°
Feels Like 18°
0
Humidity: 64%
Wind: 8 mph
UV Index: 0
11 PM
Cloudy Weather
25°
Feels Like 16°
0
Humidity: 64%
Wind: 9 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 2.61 µg/m³
  • PM10: 3.52 µg/m³
  • O3: 0.032 ppm
  • NO2: 5.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.14 µg/m³
  • PM10: 4.15 µg/m³
  • O3: 0.031 ppm
  • NO2: 5.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.58 µg/m³
  • PM10: 4.65 µg/m³
  • O3: 0.030 ppm
  • NO2: 5.9 ppb
  • SO2: 0.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

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