Hourly Weather | Today Sunday, April 26, 2026
Grand Rapids, Michigan
9 PM
Cloudy Night
61°
Feels Like 57°
0
Humidity: 58%
UV Index: 0
Wind: 8 mph
10 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 65%
UV Index: 0
Wind: 7 mph
11 PM
Cloudy Night
55°
Feels Like 52°
0
Humidity: 71%
UV Index: 0
Wind: 7 mph

Hourly Air Quality Forecast - AQI (US EPA)

9 PM
68 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.98 µg/m³
  • PM10: 9.84 µg/m³
  • O3: 0.060 ppm
  • NO2: 1.3 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

10 PM
66 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.6 µg/m³
  • PM10: 9.46 µg/m³
  • O3: 0.059 ppm
  • NO2: 1.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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

11 PM
63 AQI
Moderate air quality Dominant pollutant: O3
Details

Pollutant Concentrations:

  • PM2.5: 8.07 µg/m³
  • PM10: 8.91 µg/m³
  • O3: 0.058 ppm
  • NO2: 1.2 ppb
  • SO2: 0.5 ppb
  • CO: 0.15 ppm

Health Recommendations:

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