Hourly Weather | Today Wednesday, October 22, 2025
Worcester, Massachusetts
7 AM
Cloudy Night
54°
Feels Like 48°
49
Humidity: 94%
Wind: 9 mph
UV Index: 0
8 AM
Rainy Weather
54°
Feels Like 45°
61
Humidity: 95%
Wind: 9 mph
UV Index: 0
9 AM
Cloudy Weather
54°
Feels Like 48°
49
Humidity: 92%
Wind: 10 mph
UV Index: 2
10 AM
Cloudy Weather
55°
Feels Like 52°
49
Humidity: 87%
Wind: 13 mph
UV Index: 4
11 AM
Rainy Weather
57°
Feels Like 50°
57
Humidity: 80%
Wind: 14 mph
UV Index: 6
12 PM
Cloudy Weather
61°
Feels Like 55°
49
Humidity: 71%
Wind: 15 mph
UV Index: 11
1 PM
Cloudy Weather
61°
Feels Like 57°
39
Humidity: 64%
Wind: 16 mph
UV Index: 17
2 PM
Cloudy Weather
63°
Feels Like 61°
20
Humidity: 56%
Wind: 16 mph
UV Index: 30
3 PM
Cloudy Weather
61°
Feels Like 59°
20
Humidity: 55%
Wind: 16 mph
UV Index: 24
4 PM
Cloudy Weather
61°
Feels Like 57°
20
Humidity: 54%
Wind: 15 mph
UV Index: 18
5 PM
Cloudy Weather
57°
Feels Like 54°
20
Humidity: 55%
Wind: 14 mph
UV Index: 11
6 PM
Cloudy Night
55°
Feels Like 52°
20
Humidity: 57%
Wind: 12 mph
UV Index: 0
7 PM
Cloudy Night
54°
Feels Like 48°
13
Humidity: 61%
Wind: 12 mph
UV Index: 0
8 PM
Cloudy Night
52°
Feels Like 43°
0
Humidity: 66%
Wind: 16 mph
UV Index: 0
9 PM
Cloudy Night
52°
Feels Like 43°
0
Humidity: 66%
Wind: 16 mph
UV Index: 0
10 PM
Cloudy Night
50°
Feels Like 41°
0
Humidity: 67%
Wind: 16 mph
UV Index: 0
11 PM
Cloudy Night
48°
Feels Like 39°
0
Humidity: 68%
Wind: 16 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

7 AM
36 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.38 µg/m³
  • PM10: 6.55 µg/m³
  • O3: 0.039 ppm
  • NO2: 1.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.33 µg/m³
  • PM10: 6.34 µg/m³
  • O3: 0.039 ppm
  • NO2: 2.9 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.5 µg/m³
  • PM10: 6.51 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.7 ppb
  • SO2: 0.4 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.94 µg/m³
  • PM10: 7.28 µg/m³
  • O3: 0.036 ppm
  • NO2: 5.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.34 µg/m³
  • PM10: 8.13 µg/m³
  • O3: 0.034 ppm
  • NO2: 6.4 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.27 µg/m³
  • PM10: 5.68 µg/m³
  • O3: 0.040 ppm
  • NO2: 4.4 ppb
  • SO2: 0.9 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.05 µg/m³
  • PM10: 4.21 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.9 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.13 µg/m³
  • PM10: 4.25 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.4 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.28 µg/m³
  • PM10: 4.43 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.2 ppb
  • SO2: 0.7 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.12 µg/m³
  • PM10: 4.42 µg/m³
  • O3: 0.044 ppm
  • NO2: 2.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.72 µg/m³
  • PM10: 4.2 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.37 µg/m³
  • PM10: 4.04 µg/m³
  • O3: 0.037 ppm
  • NO2: 5.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.16 µg/m³
  • PM10: 4.08 µg/m³
  • O3: 0.034 ppm
  • NO2: 6.4 ppb
  • SO2: 1.1 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.03 µg/m³
  • PM10: 4.2 µg/m³
  • O3: 0.031 ppm
  • NO2: 7.4 ppb
  • SO2: 1.2 ppb
  • CO: 0.13 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: 1.98 µg/m³
  • PM10: 4.42 µg/m³
  • O3: 0.029 ppm
  • NO2: 8.1 ppb
  • SO2: 1.4 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.06 µg/m³
  • PM10: 4.88 µg/m³
  • O3: 0.027 ppm
  • NO2: 9.1 ppb
  • SO2: 1.5 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.13 µg/m³
  • PM10: 5.3 µg/m³
  • O3: 0.025 ppm
  • NO2: 10 ppb
  • SO2: 1.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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