Hourly Weather | Today Tuesday, July 21, 2026
Chicopee, Massachusetts
5 AM
Cloudy Night
61°
Feels Like 59°
0
Humidity: 95%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Weather
61°
Feels Like 59°
0
Humidity: 98%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
63°
Feels Like 63°
0
Humidity: 88%
UV Index: 1
Wind: 6 mph
8 AM
Cloudy Weather
64°
Feels Like 66°
17
Humidity: 80%
UV Index: 2
Wind: 7 mph
9 AM
Cloudy Weather
68°
Feels Like 68°
17
Humidity: 76%
UV Index: 3
Wind: 8 mph
10 AM
Cloudy Weather
72°
Feels Like 72°
22
Humidity: 79%
UV Index: 3
Wind: 11 mph
11 AM
Cloudy Weather
73°
Feels Like 75°
43
Humidity: 73%
UV Index: 3
Wind: 12 mph
12 PM
Cloudy Weather
75°
Feels Like 77°
47
Humidity: 68%
UV Index: 3
Wind: 14 mph
1 PM
Rainy Weather
77°
Feels Like 73°
49
Humidity: 68%
UV Index: 2
Wind: 14 mph
2 PM
Cloudy Weather
75°
Feels Like 75°
49
Humidity: 73%
UV Index: 3
Wind: 14 mph
3 PM
Cloudy Weather
75°
Feels Like 75°
49
Humidity: 75%
UV Index: 2
Wind: 14 mph
4 PM
Stormy Weather
75°
Feels Like 72°
57
Humidity: 78%
UV Index: 1
Wind: 12 mph
5 PM
Stormy Weather
73°
Feels Like 70°
66
Humidity: 83%
UV Index: 1
Wind: 12 mph
6 PM
Cloudy Weather
73°
Feels Like 75°
49
Humidity: 85%
UV Index: 1
Wind: 12 mph
7 PM
Cloudy Weather
72°
Feels Like 73°
44
Humidity: 91%
UV Index: 0
Wind: 11 mph
8 PM
Cloudy Weather
72°
Feels Like 73°
34
Humidity: 92%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Weather
72°
Feels Like 73°
34
Humidity: 96%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Weather
72°
Feels Like 73°
40
Humidity: 98%
UV Index: 0
Wind: 8 mph
11 PM
Stormy Weather
72°
Feels Like 70°
66
Humidity: 97%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
50 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.59 µg/m³
  • PM10: 13.95 µg/m³
  • O3: 0.054 ppm
  • NO2: 2.7 ppb
  • SO2: 0.8 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

6 AM
49 AQI
Good air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.42 µg/m³
  • PM10: 14.05 µg/m³
  • O3: 0.053 ppm
  • NO2: 2.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.08 µg/m³
  • PM10: 13.86 µg/m³
  • O3: 0.052 ppm
  • NO2: 3.6 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.62 µg/m³
  • PM10: 13.42 µg/m³
  • O3: 0.052 ppm
  • NO2: 4.3 ppb
  • SO2: 0.9 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.98 µg/m³
  • PM10: 12.67 µg/m³
  • O3: 0.053 ppm
  • NO2: 3.8 ppb
  • SO2: 0.8 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.26 µg/m³
  • PM10: 11.89 µg/m³
  • O3: 0.054 ppm
  • NO2: 3.2 ppb
  • SO2: 0.7 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

11 AM
51 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.58 µg/m³
  • PM10: 11.22 µg/m³
  • O3: 0.054 ppm
  • NO2: 2.6 ppb
  • SO2: 0.7 ppb
  • CO: 0.22 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

12 PM
52 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 5.79 µg/m³
  • PM10: 9.18 µg/m³
  • O3: 0.055 ppm
  • NO2: 2 ppb
  • SO2: 0.6 ppb
  • CO: 0.25 ppm

Health Recommendations:

Air quality is acceptable; some pollutants may pose a risk for a small number of unusually sensitive people.

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

Pollutant Concentrations:

  • PM2.5: 5.14 µg/m³
  • PM10: 7.33 µg/m³
  • O3: 0.053 ppm
  • NO2: 2 ppb
  • SO2: 0.5 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.81 µg/m³
  • PM10: 6.56 µg/m³
  • O3: 0.051 ppm
  • NO2: 2.1 ppb
  • SO2: 0.5 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.68 µg/m³
  • PM10: 6.23 µg/m³
  • O3: 0.047 ppm
  • NO2: 2.5 ppb
  • SO2: 0.5 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.56 µg/m³
  • PM10: 5.94 µg/m³
  • O3: 0.043 ppm
  • NO2: 3.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.25 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: 4.51 µg/m³
  • PM10: 5.68 µg/m³
  • O3: 0.039 ppm
  • NO2: 4 ppb
  • SO2: 0.6 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.35 µg/m³
  • PM10: 5.31 µg/m³
  • O3: 0.034 ppm
  • NO2: 4.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.2 µg/m³
  • PM10: 5.09 µg/m³
  • O3: 0.029 ppm
  • NO2: 5.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.13 µg/m³
  • PM10: 4.97 µg/m³
  • O3: 0.026 ppm
  • NO2: 5.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.09 µg/m³
  • PM10: 4.83 µg/m³
  • O3: 0.024 ppm
  • NO2: 5.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 4.15 µg/m³
  • PM10: 4.81 µg/m³
  • O3: 0.023 ppm
  • NO2: 5.1 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 4.2 µg/m³
  • PM10: 4.79 µg/m³
  • O3: 0.023 ppm
  • NO2: 5.4 ppb
  • SO2: 0.6 ppb
  • CO: 0.13 ppm

Health Recommendations:

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