Hourly Weather | Today Wednesday, December 24, 2025
Worcester, Massachusetts
2 PM
Cloudy Weather
36°
Feels Like 27°
32
Humidity: 59%
Wind: 15 mph
UV Index: 2
3 PM
Cloudy Weather
36°
Feels Like 25°
32
Humidity: 56%
Wind: 13 mph
UV Index: 1
4 PM
Cloudy Weather
34°
Feels Like 25°
32
Humidity: 60%
Wind: 10 mph
UV Index: 0
5 PM
Cloudy Night
34°
Feels Like 27°
32
Humidity: 61%
Wind: 8 mph
UV Index: 0
6 PM
Cloudy Night
30°
Feels Like 27°
21
Humidity: 63%
Wind: 7 mph
UV Index: 0
7 PM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 67%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 70%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
27°
Feels Like 25°
0
Humidity: 72%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
25°
Feels Like 23°
0
Humidity: 75%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
27°
Feels Like 23°
0
Humidity: 72%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 0.5 µg/m³
  • PM10: 0.81 µg/m³
  • O3: 0.027 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.53 µg/m³
  • PM10: 1.02 µg/m³
  • O3: 0.026 ppm
  • NO2: 2.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.63 µg/m³
  • PM10: 1.2 µg/m³
  • O3: 0.025 ppm
  • NO2: 3.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 0.79 µg/m³
  • PM10: 1.49 µg/m³
  • O3: 0.024 ppm
  • NO2: 4.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.08 µg/m³
  • PM10: 1.99 µg/m³
  • O3: 0.022 ppm
  • NO2: 6.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.49 µg/m³
  • PM10: 2.66 µg/m³
  • O3: 0.021 ppm
  • NO2: 7.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.17 µg/m³
  • PM10: 3.67 µg/m³
  • O3: 0.019 ppm
  • NO2: 8.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.09 µg/m³
  • PM10: 4.99 µg/m³
  • O3: 0.018 ppm
  • NO2: 9.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

10 PM
17 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 4.1 µg/m³
  • PM10: 6.34 µg/m³
  • O3: 0.016 ppm
  • NO2: 10.8 ppb
  • SO2: 0.4 ppb
  • CO: 0.25 ppm

Health Recommendations:

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

11 PM
21 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 5.07 µg/m³
  • PM10: 7.58 µg/m³
  • O3: 0.015 ppm
  • NO2: 11.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.26 ppm

Health Recommendations:

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