Hourly Weather | Today › Wednesday, October 28, 2026
Worcester, Massachusetts
4 PM
Cloudy Weather
54°
Feels Like 54°
0
Humidity: 48%
UV Index: 2
Wind: 6 mph
5 PM
Cloudy Weather
52°
Feels Like 52°
0
Humidity: 54%
UV Index: 1
Wind: 6 mph
6 PM
Cloudy Night
50°
Feels Like 48°
0
Humidity: 61%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
48°
Feels Like 46°
0
Humidity: 66%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
46°
Feels Like 45°
0
Humidity: 66%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
46°
Feels Like 43°
0
Humidity: 73%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
45°
Feels Like 41°
0
Humidity: 79%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
45°
Feels Like 39°
0
Humidity: 85%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.76 µg/m³
  • PM10: 5.11 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.95 µg/m³
  • PM10: 5.4 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.08 µg/m³
  • PM10: 5.66 µg/m³
  • O3: 0.036 ppm
  • NO2: 4.5 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.22 µg/m³
  • PM10: 6 µg/m³
  • O3: 0.033 ppm
  • NO2: 6.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.29 µg/m³
  • PM10: 6.37 µg/m³
  • O3: 0.030 ppm
  • NO2: 6.9 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
27 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.22 µg/m³
  • PM10: 6.6 µg/m³
  • O3: 0.029 ppm
  • NO2: 6.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.1 µg/m³
  • PM10: 6.78 µg/m³
  • O3: 0.029 ppm
  • NO2: 6.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.01 µg/m³
  • PM10: 7.04 µg/m³
  • O3: 0.029 ppm
  • NO2: 5.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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