Hourly Weather | Today Thursday, February 26, 2026
Rockford, Illinois
4 AM
Cloudy Night
19°
Feels Like 21°
7
Frost Risk: 100%
Humidity: 75%
UV Index: 0
Wind: 4 mph
5 AM
Cloudy Night
21°
Feels Like 23°
7
Frost Risk: 100%
Humidity: 73%
UV Index: 0
Wind: 2 mph
6 AM
Cloudy Night
21°
Feels Like 23°
5
Frost Risk: 100%
Humidity: 70%
UV Index: 0
Wind: 4 mph
7 AM
Cloudy Weather
21°
Feels Like 21°
0
Frost Risk: 99%
Humidity: 71%
UV Index: 0
Wind: 5 mph
8 AM
Cloudy Weather
25°
Feels Like 25°
0
Humidity: 63%
UV Index: 1
Wind: 5 mph
9 AM
Cloudy Weather
28°
Feels Like 27°
0
Humidity: 56%
UV Index: 1
Wind: 6 mph
10 AM
Cloudy Weather
32°
Feels Like 30°
0
Humidity: 49%
UV Index: 2
Wind: 7 mph
11 AM
Cloudy Weather
36°
Feels Like 34°
0
Humidity: 45%
UV Index: 2
Wind: 8 mph
12 PM
Cloudy Weather
39°
Feels Like 36°
0
Humidity: 43%
UV Index: 2
Wind: 9 mph
1 PM
Cloudy Weather
41°
Feels Like 36°
0
Humidity: 43%
UV Index: 2
Wind: 10 mph
2 PM
Cloudy Weather
43°
Feels Like 37°
0
Humidity: 44%
UV Index: 1
Wind: 12 mph
3 PM
Cloudy Weather
45°
Feels Like 37°
0
Humidity: 45%
UV Index: 1
Wind: 12 mph
4 PM
Cloudy Weather
43°
Feels Like 36°
0
Humidity: 50%
UV Index: 1
Wind: 10 mph
5 PM
Cloudy Weather
39°
Feels Like 36°
0
Humidity: 57%
UV Index: 0
Wind: 8 mph
6 PM
Cloudy Night
37°
Feels Like 34°
0
Humidity: 65%
UV Index: 0
Wind: 7 mph
7 PM
Cloudy Night
36°
Feels Like 30°
0
Humidity: 72%
UV Index: 0
Wind: 6 mph
8 PM
Cloudy Night
34°
Feels Like 28°
0
Humidity: 79%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Night
32°
Feels Like 27°
0
Humidity: 82%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Night
30°
Feels Like 27°
0
Humidity: 84%
UV Index: 0
Wind: 6 mph
11 PM
Cloudy Night
30°
Feels Like 27°
0
Frost Risk: 86%
Humidity: 86%
UV Index: 0
Wind: 6 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 3.1 µg/m³
  • PM10: 3.52 µg/m³
  • O3: 0.044 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.21 µg/m³
  • PM10: 3.63 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.35 µg/m³
  • PM10: 3.78 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.49 µg/m³
  • PM10: 3.96 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.1 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.6 µg/m³
  • PM10: 4.11 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.16 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: 3.66 µg/m³
  • PM10: 4.2 µg/m³
  • O3: 0.039 ppm
  • NO2: 3.4 ppb
  • SO2: 0.4 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.22 µg/m³
  • PM10: 3.78 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.2 ppb
  • SO2: 0.8 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.02 µg/m³
  • PM10: 3.64 µg/m³
  • O3: 0.041 ppm
  • NO2: 3.1 ppb
  • SO2: 1.1 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.87 µg/m³
  • PM10: 3.55 µg/m³
  • O3: 0.041 ppm
  • NO2: 2.9 ppb
  • SO2: 1.4 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.99 µg/m³
  • PM10: 2.65 µg/m³
  • O3: 0.046 ppm
  • NO2: 2.2 ppb
  • SO2: 1.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 1.9 µg/m³
  • PM10: 2.52 µg/m³
  • O3: 0.049 ppm
  • NO2: 1.9 ppb
  • SO2: 1.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.19 µg/m³
  • PM10: 2.79 µg/m³
  • O3: 0.050 ppm
  • NO2: 1.8 ppb
  • SO2: 1.7 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 2.81 µg/m³
  • PM10: 3.45 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.4 ppb
  • SO2: 1.4 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 3.59 µg/m³
  • PM10: 4.3 µg/m³
  • O3: 0.043 ppm
  • NO2: 4.2 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 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: 4.38 µg/m³
  • PM10: 5.2 µg/m³
  • O3: 0.037 ppm
  • NO2: 6.4 ppb
  • SO2: 0.5 ppb
  • CO: 0.19 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.12 µg/m³
  • PM10: 6.06 µg/m³
  • O3: 0.033 ppm
  • NO2: 7.3 ppb
  • SO2: 0.4 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.85 µg/m³
  • PM10: 6.84 µg/m³
  • O3: 0.032 ppm
  • NO2: 7.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.56 µg/m³
  • PM10: 7.54 µg/m³
  • O3: 0.032 ppm
  • NO2: 6.7 ppb
  • SO2: 0.3 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.11 µg/m³
  • PM10: 8.06 µg/m³
  • O3: 0.031 ppm
  • NO2: 6.1 ppb
  • SO2: 0.2 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.66 µg/m³
  • PM10: 8.58 µg/m³
  • O3: 0.030 ppm
  • NO2: 5.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.21 ppm

Health Recommendations:

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