Hourly Weather | Today Friday, September 18, 2026
Elgin, Illinois
10 AM
Cloudy Weather
64°
Feels Like 64°
3
Humidity: 90%
UV Index: 2
Wind: 9 mph
11 AM
Cloudy Weather
68°
Feels Like 68°
3
Humidity: 76%
UV Index: 3
Wind: 10 mph
12 PM
Cloudy Weather
72°
Feels Like 72°
3
Humidity: 67%
UV Index: 3
Wind: 10 mph
1 PM
Cloudy Weather
73°
Feels Like 75°
6
Humidity: 58%
UV Index: 3
Wind: 10 mph
2 PM
Cloudy Weather
73°
Feels Like 73°
17
Humidity: 59%
UV Index: 3
Wind: 10 mph
3 PM
Cloudy Weather
73°
Feels Like 73°
17
Humidity: 61%
UV Index: 3
Wind: 10 mph
4 PM
Cloudy Weather
72°
Feels Like 72°
22
Humidity: 63%
UV Index: 2
Wind: 10 mph
5 PM
Cloudy Weather
72°
Feels Like 70°
34
Humidity: 66%
UV Index: 1
Wind: 9 mph
6 PM
Cloudy Weather
70°
Feels Like 66°
37
Humidity: 70%
UV Index: 1
Wind: 8 mph
7 PM
Rainy Night
68°
Feels Like 63°
40
Humidity: 75%
UV Index: 0
Wind: 8 mph
8 PM
Cloudy Weather
66°
Feels Like 64°
25
Humidity: 79%
UV Index: 0
Wind: 7 mph
9 PM
Cloudy Weather
66°
Feels Like 64°
20
Humidity: 79%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
66°
Feels Like 64°
20
Humidity: 80%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
66°
Feels Like 64°
20
Humidity: 81%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 5.64 µg/m³
  • PM10: 6.66 µg/m³
  • O3: 0.023 ppm
  • NO2: 4.8 ppb
  • SO2: 1.1 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.51 µg/m³
  • PM10: 6.28 µg/m³
  • O3: 0.030 ppm
  • NO2: 3.8 ppb
  • SO2: 1.2 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 5.63 µg/m³
  • PM10: 6.24 µg/m³
  • O3: 0.035 ppm
  • NO2: 2.8 ppb
  • SO2: 1.2 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.29 µg/m³
  • PM10: 6.86 µg/m³
  • O3: 0.038 ppm
  • NO2: 2.2 ppb
  • SO2: 1.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.92 µg/m³
  • PM10: 7.45 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.8 ppb
  • SO2: 1.1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.02 µg/m³
  • PM10: 7.5 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.6 ppb
  • SO2: 1 ppb
  • CO: 0.15 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: 6.98 µg/m³
  • PM10: 7.42 µg/m³
  • O3: 0.043 ppm
  • NO2: 1.6 ppb
  • SO2: 1 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.14 µg/m³
  • PM10: 7.58 µg/m³
  • O3: 0.042 ppm
  • NO2: 1.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.42 µg/m³
  • PM10: 7.88 µg/m³
  • O3: 0.040 ppm
  • NO2: 2.5 ppb
  • SO2: 0.9 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.53 µg/m³
  • PM10: 8.02 µg/m³
  • O3: 0.038 ppm
  • NO2: 3.1 ppb
  • SO2: 0.8 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.48 µg/m³
  • PM10: 8.04 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.16 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.34 µg/m³
  • PM10: 7.94 µg/m³
  • O3: 0.036 ppm
  • NO2: 3.4 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7 µg/m³
  • PM10: 7.62 µg/m³
  • O3: 0.035 ppm
  • NO2: 3.3 ppb
  • SO2: 0.8 ppb
  • CO: 0.17 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: O3
Details

Pollutant Concentrations:

  • PM2.5: 6.48 µg/m³
  • PM10: 7.06 µg/m³
  • O3: 0.035 ppm
  • NO2: 3.1 ppb
  • SO2: 0.7 ppb
  • CO: 0.16 ppm

Health Recommendations:

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