Hourly Weather | Today Wednesday, August 5, 2026
Grand Rapids, Michigan
5 PM
Stormy Weather
79°
Feels Like 79°
59
Humidity: 72%
UV Index: 1
Wind: 9 mph
6 PM
Cloudy Weather
79°
Feels Like 81°
49
Humidity: 70%
UV Index: 1
Wind: 9 mph
7 PM
Sunny with a Chance of Thunderstorms
79°
Feels Like 77°
68
Humidity: 79%
UV Index: 0
Wind: 8 mph
8 PM
Stormy Weather
75°
Feels Like 73°
74
Humidity: 80%
UV Index: 0
Wind: 8 mph
9 PM
Stormy Weather
73°
Feels Like 72°
74
Humidity: 84%
UV Index: 0
Wind: 7 mph
10 PM
Cloudy Weather
73°
Feels Like 75°
49
Humidity: 85%
UV Index: 0
Wind: 6 mph
11 PM
Stormy Weather
72°
Feels Like 70°
70
Humidity: 86%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

5 PM
67 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.39 µg/m³
  • PM10: 9.73 µg/m³
  • O3: 0.059 ppm
  • NO2: 0.9 ppb
  • SO2: 1.4 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

6 PM
64 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 9.53 µg/m³
  • PM10: 9.9 µg/m³
  • O3: 0.058 ppm
  • NO2: 1.2 ppb
  • SO2: 1.5 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.57 µg/m³
  • PM10: 9.97 µg/m³
  • O3: 0.056 ppm
  • NO2: 1.8 ppb
  • SO2: 1.6 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.36 µg/m³
  • PM10: 9.77 µg/m³
  • O3: 0.052 ppm
  • NO2: 2.4 ppb
  • SO2: 1.6 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.16 µg/m³
  • PM10: 9.54 µg/m³
  • O3: 0.048 ppm
  • NO2: 2.7 ppb
  • SO2: 1.5 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.12 µg/m³
  • PM10: 9.48 µg/m³
  • O3: 0.045 ppm
  • NO2: 2.7 ppb
  • SO2: 1.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 9.11 µg/m³
  • PM10: 9.45 µg/m³
  • O3: 0.042 ppm
  • NO2: 2.7 ppb
  • SO2: 1.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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