Hourly Weather | Today Tuesday, April 28, 2026
Chicopee, Massachusetts
6 AM
Cloudy Weather
39°
Feels Like 39°
0
Humidity: 99%
UV Index: 0
Wind: 4 mph
7 AM
Cloudy Weather
41°
Feels Like 45°
0
Humidity: 86%
UV Index: 1
Wind: 2 mph
8 AM
Sunny Weather
50°
Feels Like 55°
0
Humidity: 65%
UV Index: 2
Wind: 4 mph
9 AM
Sunny Weather
55°
Feels Like 61°
0
Humidity: 52%
UV Index: 3
Wind: 4 mph
10 AM
Sunny Weather
61°
Feels Like 66°
0
Humidity: 43%
UV Index: 4
Wind: 6 mph
11 AM
Cloudy Weather
64°
Feels Like 72°
0
Humidity: 38%
UV Index: 6
Wind: 7 mph
12 PM
Cloudy Weather
66°
Feels Like 75°
0
Humidity: 34%
UV Index: 7
Wind: 7 mph
1 PM
Cloudy Weather
68°
Feels Like 75°
0
Humidity: 32%
UV Index: 8
Wind: 8 mph
2 PM
Cloudy Weather
70°
Feels Like 77°
0
Humidity: 30%
UV Index: 7
Wind: 8 mph
3 PM
Cloudy Weather
72°
Feels Like 75°
0
Humidity: 29%
UV Index: 6
Wind: 8 mph
4 PM
Cloudy Weather
70°
Feels Like 73°
0
Humidity: 30%
UV Index: 4
Wind: 8 mph
5 PM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 31%
UV Index: 3
Wind: 8 mph
6 PM
Cloudy Weather
66°
Feels Like 66°
0
Humidity: 33%
UV Index: 2
Wind: 9 mph
7 PM
Cloudy Weather
64°
Feels Like 63°
0
Humidity: 36%
UV Index: 1
Wind: 9 mph
8 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 40%
UV Index: 0
Wind: 9 mph
9 PM
Cloudy Night
57°
Feels Like 54°
0
Humidity: 43%
UV Index: 0
Wind: 9 mph
10 PM
Cloudy Night
54°
Feels Like 52°
0
Humidity: 45%
UV Index: 0
Wind: 8 mph
11 PM
Cloudy Night
52°
Feels Like 48°
0
Humidity: 47%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.94 µg/m³
  • PM10: 21.58 µg/m³
  • O3: 0.019 ppm
  • NO2: 23.6 ppb
  • SO2: 1.6 ppb
  • CO: 0.29 ppm

Health Recommendations:

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

7 AM
54 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 13.87 µg/m³
  • PM10: 21.52 µg/m³
  • O3: 0.019 ppm
  • NO2: 24.7 ppb
  • SO2: 1.6 ppb
  • CO: 0.29 ppm

Health Recommendations:

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

8 AM
55 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.28 µg/m³
  • PM10: 22.48 µg/m³
  • O3: 0.022 ppm
  • NO2: 22.4 ppb
  • SO2: 1.7 ppb
  • CO: 0.31 ppm

Health Recommendations:

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

9 AM
58 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 15.73 µg/m³
  • PM10: 24.56 µg/m³
  • O3: 0.026 ppm
  • NO2: 20.6 ppb
  • SO2: 1.8 ppb
  • CO: 0.33 ppm

Health Recommendations:

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

10 AM
64 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 18.59 µg/m³
  • PM10: 27.83 µg/m³
  • O3: 0.031 ppm
  • NO2: 20 ppb
  • SO2: 2.1 ppb
  • CO: 0.34 ppm

Health Recommendations:

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

11 AM
76 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 24.22 µg/m³
  • PM10: 33.6 µg/m³
  • O3: 0.043 ppm
  • NO2: 19.8 ppb
  • SO2: 2.7 ppb
  • CO: 0.34 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.51 µg/m³
  • PM10: 13.46 µg/m³
  • O3: 0.060 ppm
  • NO2: 6.8 ppb
  • SO2: 1.8 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

1 PM
89 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.82 µg/m³
  • PM10: 13 µg/m³
  • O3: 0.066 ppm
  • NO2: 3.8 ppb
  • SO2: 1.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

2 PM
110 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 13.16 µg/m³
  • PM10: 16.43 µg/m³
  • O3: 0.073 ppm
  • NO2: 2.8 ppb
  • SO2: 1.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

3 PM
125 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 16.33 µg/m³
  • PM10: 19.84 µg/m³
  • O3: 0.077 ppm
  • NO2: 2.5 ppb
  • SO2: 1.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

4 PM
130 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 18.82 µg/m³
  • PM10: 22.66 µg/m³
  • O3: 0.079 ppm
  • NO2: 2.8 ppb
  • SO2: 1.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

5 PM
126 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 19.68 µg/m³
  • PM10: 23.75 µg/m³
  • O3: 0.078 ppm
  • NO2: 3.4 ppb
  • SO2: 1.4 ppb
  • CO: 0.18 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

6 PM
110 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 20.47 µg/m³
  • PM10: 25.02 µg/m³
  • O3: 0.073 ppm
  • NO2: 5.6 ppb
  • SO2: 1.5 ppb
  • CO: 0.19 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

7 PM
92 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 21.7 µg/m³
  • PM10: 26.91 µg/m³
  • O3: 0.067 ppm
  • NO2: 8.2 ppb
  • SO2: 1.5 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

8 PM
75 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 22.27 µg/m³
  • PM10: 27.96 µg/m³
  • O3: 0.062 ppm
  • NO2: 9.3 ppb
  • SO2: 1.5 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.

9 PM
71 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 21.68 µg/m³
  • PM10: 27.49 µg/m³
  • O3: 0.057 ppm
  • NO2: 9.3 ppb
  • SO2: 1.3 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.

10 PM
69 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.79 µg/m³
  • PM10: 26.76 µg/m³
  • O3: 0.053 ppm
  • NO2: 9.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

11 PM
66 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 19.47 µg/m³
  • PM10: 25.46 µg/m³
  • O3: 0.049 ppm
  • NO2: 9.1 ppb
  • SO2: 1 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.