Hourly Weather | Today Thursday, February 26, 2026
Chicopee, Massachusetts
3 AM
Cloudy Night
30°
Feels Like 21°
19
Frost Risk: 44%
Humidity: 88%
UV Index: 0
Wind: 9 mph
4 AM
Cloudy Night
30°
Feels Like 19°
19
Frost Risk: 46%
Humidity: 82%
UV Index: 0
Wind: 11 mph
5 AM
Night
30°
Feels Like 21°
19
Humidity: 77%
UV Index: 0
Wind: 9 mph
6 AM
Night
30°
Feels Like 21°
13
Humidity: 71%
UV Index: 0
Wind: 8 mph
7 AM
Cloudy Weather
28°
Feels Like 23°
0
Frost Risk: 44%
Humidity: 67%
UV Index: 0
Wind: 8 mph
8 AM
Cloudy Weather
30°
Feels Like 25°
0
Humidity: 61%
UV Index: 1
Wind: 9 mph
9 AM
Cloudy Weather
34°
Feels Like 27°
0
Humidity: 54%
UV Index: 2
Wind: 11 mph
10 AM
Cloudy Weather
36°
Feels Like 30°
0
Humidity: 49%
UV Index: 2
Wind: 11 mph
11 AM
Cloudy Weather
37°
Feels Like 32°
0
Humidity: 45%
UV Index: 3
Wind: 11 mph
12 PM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 44%
UV Index: 3
Wind: 11 mph
1 PM
Cloudy Weather
37°
Feels Like 36°
0
Humidity: 44%
UV Index: 3
Wind: 11 mph
2 PM
Cloudy Weather
39°
Feels Like 36°
0
Humidity: 43%
UV Index: 2
Wind: 9 mph
3 PM
Cloudy Weather
37°
Feels Like 34°
0
Humidity: 46%
UV Index: 1
Wind: 8 mph
4 PM
Cloudy Weather
37°
Feels Like 32°
0
Humidity: 49%
UV Index: 1
Wind: 8 mph
5 PM
Cloudy Weather
36°
Feels Like 30°
0
Humidity: 53%
UV Index: 0
Wind: 7 mph
6 PM
Cloudy Night
34°
Feels Like 30°
0
Humidity: 55%
UV Index: 0
Wind: 6 mph
7 PM
Cloudy Night
30°
Feels Like 28°
0
Humidity: 60%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
28°
Feels Like 25°
0
Humidity: 63%
UV Index: 0
Wind: 6 mph
9 PM
Cloudy Night
27°
Feels Like 21°
0
Humidity: 65%
UV Index: 0
Wind: 6 mph
10 PM
Cloudy Night
25°
Feels Like 19°
0
Humidity: 65%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
23°
Feels Like 19°
0
Frost Risk: 96%
Humidity: 66%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

3 AM
51 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.56 µg/m³
  • PM10: 15.65 µg/m³
  • O3: 0.029 ppm
  • NO2: 14.5 ppb
  • SO2: 1.4 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.

4 AM
44 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.63 µg/m³
  • PM10: 13.31 µg/m³
  • O3: 0.031 ppm
  • NO2: 12.8 ppb
  • SO2: 1.3 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

5 AM
39 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 9.25 µg/m³
  • PM10: 11.66 µg/m³
  • O3: 0.032 ppm
  • NO2: 11.6 ppb
  • SO2: 1.3 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

6 AM
37 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 8.91 µg/m³
  • PM10: 11.38 µg/m³
  • O3: 0.032 ppm
  • NO2: 12 ppb
  • SO2: 1.6 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

7 AM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.2 µg/m³
  • PM10: 13.53 µg/m³
  • O3: 0.029 ppm
  • NO2: 15.6 ppb
  • SO2: 1.9 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

8 AM
50 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 12.22 µg/m³
  • PM10: 16.76 µg/m³
  • O3: 0.027 ppm
  • NO2: 18.6 ppb
  • SO2: 2.2 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 13.54 µg/m³
  • PM10: 18.64 µg/m³
  • O3: 0.031 ppm
  • NO2: 15.9 ppb
  • SO2: 2.4 ppb
  • CO: 0.32 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 14.12 µg/m³
  • PM10: 18.76 µg/m³
  • O3: 0.036 ppm
  • NO2: 12.3 ppb
  • SO2: 2.4 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.

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

Pollutant Concentrations:

  • PM2.5: 12.86 µg/m³
  • PM10: 16.11 µg/m³
  • O3: 0.044 ppm
  • NO2: 8.3 ppb
  • SO2: 2.1 ppb
  • CO: 0.26 ppm

Health Recommendations:

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

12 PM
56 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 14.65 µg/m³
  • PM10: 17.51 µg/m³
  • O3: 0.050 ppm
  • NO2: 7 ppb
  • SO2: 1.9 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

1 PM
60 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 16.84 µg/m³
  • PM10: 19.56 µg/m³
  • O3: 0.055 ppm
  • NO2: 6.6 ppb
  • SO2: 1.8 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.

2 PM
67 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 20.13 µg/m³
  • PM10: 23.17 µg/m³
  • O3: 0.059 ppm
  • NO2: 7.7 ppb
  • SO2: 1.8 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

3 PM
81 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.59 µg/m³
  • PM10: 30.6 µg/m³
  • O3: 0.059 ppm
  • NO2: 11.1 ppb
  • SO2: 2 ppb
  • CO: 0.27 ppm

Health Recommendations:

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

4 PM
95 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 33.2 µg/m³
  • PM10: 38.33 µg/m³
  • O3: 0.056 ppm
  • NO2: 16.6 ppb
  • SO2: 2.3 ppb
  • CO: 0.30 ppm

Health Recommendations:

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

5 PM
116 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 41.73 µg/m³
  • PM10: 48.93 µg/m³
  • O3: 0.043 ppm
  • NO2: 28.7 ppb
  • SO2: 2 ppb
  • CO: 0.39 ppm

Health Recommendations:

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

6 PM
143 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 52.69 µg/m³
  • PM10: 63.12 µg/m³
  • O3: 0.025 ppm
  • NO2: 45.4 ppb
  • SO2: 2.1 ppb
  • CO: 0.52 ppm

Health Recommendations:

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

7 PM
155 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 65.04 µg/m³
  • PM10: 79.49 µg/m³
  • O3: 0.015 ppm
  • NO2: 56.5 ppb
  • SO2: 2.3 ppb
  • CO: 0.66 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

8 PM
161 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 76.46 µg/m³
  • PM10: 94.74 µg/m³
  • O3: 0.007 ppm
  • NO2: 65.2 ppb
  • SO2: 2.5 ppb
  • CO: 0.78 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

9 PM
166 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 86.4 µg/m³
  • PM10: 107.8 µg/m³
  • O3: 0.004 ppm
  • NO2: 70.3 ppb
  • SO2: 2.7 ppb
  • CO: 0.89 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

10 PM
170 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 93.37 µg/m³
  • PM10: 117.18 µg/m³
  • O3: 0.005 ppm
  • NO2: 71.3 ppb
  • SO2: 2.7 ppb
  • CO: 0.99 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.

11 PM
169 AQI
Unhealthy air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 92.42 µg/m³
  • PM10: 115.83 µg/m³
  • O3: 0.006 ppm
  • NO2: 67.3 ppb
  • SO2: 2.5 ppb
  • CO: 1.02 ppm

Health Recommendations:

Everyone may begin to experience health effects; sensitive groups may experience more serious effects.