Hourly Weather | Today Wednesday, March 18, 2026
Chicopee, Massachusetts
9 AM
Cloudy Weather
25°
Feels Like 19°
0
Humidity: 46%
UV Index: 2
Wind: 9 mph
10 AM
Cloudy Weather
28°
Feels Like 23°
0
Humidity: 38%
UV Index: 3
Wind: 9 mph
11 AM
Cloudy Weather
30°
Feels Like 27°
0
Humidity: 33%
UV Index: 4
Wind: 9 mph
12 PM
Cloudy Weather
32°
Feels Like 32°
0
Humidity: 30%
UV Index: 4
Wind: 8 mph
1 PM
Cloudy Weather
32°
Feels Like 37°
0
Humidity: 26%
UV Index: 5
Wind: 7 mph
2 PM
Cloudy Weather
34°
Feels Like 41°
0
Humidity: 24%
UV Index: 4
Wind: 6 mph
3 PM
Cloudy Weather
36°
Feels Like 37°
0
Humidity: 24%
UV Index: 4
Wind: 7 mph
4 PM
Cloudy Weather
36°
Feels Like 36°
0
Humidity: 25%
UV Index: 3
Wind: 8 mph
5 PM
Cloudy Weather
36°
Feels Like 34°
0
Humidity: 25%
UV Index: 2
Wind: 8 mph
6 PM
Cloudy Weather
34°
Feels Like 30°
0
Humidity: 30%
UV Index: 1
Wind: 7 mph
7 PM
Cloudy Weather
32°
Feels Like 28°
0
Humidity: 37%
UV Index: 0
Wind: 7 mph
8 PM
Cloudy Night
30°
Feels Like 25°
0
Humidity: 43%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
28°
Feels Like 23°
0
Humidity: 50%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
27°
Feels Like 21°
0
Humidity: 55%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
27°
Feels Like 21°
0
Humidity: 60%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 1.58 µg/m³
  • PM10: 3.74 µg/m³
  • O3: 0.046 ppm
  • NO2: 5.1 ppb
  • SO2: 0.9 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.86 µg/m³
  • PM10: 4.18 µg/m³
  • O3: 0.045 ppm
  • NO2: 5.3 ppb
  • SO2: 1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.1 µg/m³
  • PM10: 4.41 µg/m³
  • O3: 0.046 ppm
  • NO2: 4.9 ppb
  • SO2: 1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.37 µg/m³
  • PM10: 4.57 µg/m³
  • O3: 0.047 ppm
  • NO2: 4.3 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.97 µg/m³
  • PM10: 5.24 µg/m³
  • O3: 0.049 ppm
  • NO2: 3.9 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 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: 3.83 µg/m³
  • PM10: 6.24 µg/m³
  • O3: 0.051 ppm
  • NO2: 3.8 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.01 µg/m³
  • PM10: 7.71 µg/m³
  • O3: 0.053 ppm
  • NO2: 4 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.33 µg/m³
  • PM10: 9.48 µg/m³
  • O3: 0.054 ppm
  • NO2: 4.8 ppb
  • SO2: 1.2 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.25 µg/m³
  • PM10: 10.83 µg/m³
  • O3: 0.053 ppm
  • NO2: 5.8 ppb
  • SO2: 1.3 ppb
  • CO: 0.18 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8 µg/m³
  • PM10: 12.17 µg/m³
  • O3: 0.051 ppm
  • NO2: 7.9 ppb
  • SO2: 1.5 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.86 µg/m³
  • PM10: 13.91 µg/m³
  • O3: 0.047 ppm
  • NO2: 11.2 ppb
  • SO2: 1.7 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.55 µg/m³
  • PM10: 15.46 µg/m³
  • O3: 0.044 ppm
  • NO2: 12.7 ppb
  • SO2: 1.8 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

9 PM
42 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 10.16 µg/m³
  • PM10: 16.86 µg/m³
  • O3: 0.042 ppm
  • NO2: 13.6 ppb
  • SO2: 1.8 ppb
  • CO: 0.23 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 10.91 µg/m³
  • PM10: 18.4 µg/m³
  • O3: 0.039 ppm
  • NO2: 14.7 ppb
  • SO2: 1.8 ppb
  • CO: 0.24 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 11.68 µg/m³
  • PM10: 19.86 µg/m³
  • O3: 0.037 ppm
  • NO2: 15.7 ppb
  • SO2: 1.8 ppb
  • CO: 0.25 ppm

Health Recommendations:

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