Hourly Weather | Today Tuesday, August 25, 2026
Grand Rapids, Michigan
9 PM
Cloudy Night
70°
Feels Like 68°
0
Humidity: 68%
UV Index: 0
Wind: 5 mph
10 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 74%
UV Index: 0
Wind: 5 mph
11 PM
Cloudy Night
64°
Feels Like 64°
0
Humidity: 79%
UV Index: 0
Wind: 5 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 7.91 µg/m³
  • PM10: 8.47 µg/m³
  • O3: 0.038 ppm
  • NO2: 4.7 ppb
  • SO2: 1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.33 µg/m³
  • PM10: 9 µg/m³
  • O3: 0.031 ppm
  • NO2: 5.5 ppb
  • SO2: 0.8 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8.84 µg/m³
  • PM10: 9.58 µg/m³
  • O3: 0.026 ppm
  • NO2: 5.9 ppb
  • SO2: 0.6 ppb
  • CO: 0.16 ppm

Health Recommendations:

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