Hourly Weather | Today Sunday, May 17, 2026
Grand Rapids, Michigan
5 AM
Cloudy Weather
61°
Feels Like 59°
5
Humidity: 94%
UV Index: 0
Wind: 6 mph
6 AM
Cloudy Weather
59°
Feels Like 57°
5
Humidity: 96%
UV Index: 0
Wind: 6 mph
7 AM
Cloudy Weather
61°
Feels Like 61°
8
Humidity: 94%
UV Index: 0
Wind: 6 mph
8 AM
Stormy Weather
63°
Feels Like 59°
51
Humidity: 89%
UV Index: 0
Wind: 6 mph
9 AM
Cloudy Weather
64°
Feels Like 64°
47
Humidity: 85%
UV Index: 1
Wind: 7 mph
10 AM
Cloudy Weather
66°
Feels Like 66°
34
Humidity: 79%
UV Index: 1
Wind: 7 mph
11 AM
Cloudy Weather
70°
Feels Like 70°
15
Humidity: 74%
UV Index: 2
Wind: 8 mph
12 PM
Cloudy Weather
73°
Feels Like 73°
15
Humidity: 69%
UV Index: 2
Wind: 8 mph
1 PM
Cloudy Weather
75°
Feels Like 77°
19
Humidity: 64%
UV Index: 2
Wind: 8 mph
2 PM
Cloudy Weather
77°
Feels Like 79°
47
Humidity: 63%
UV Index: 2
Wind: 8 mph
3 PM
Stormy Weather
77°
Feels Like 75°
51
Humidity: 65%
UV Index: 2
Wind: 9 mph
4 PM
Cloudy Weather
79°
Feels Like 79°
47
Humidity: 61%
UV Index: 1
Wind: 10 mph
5 PM
Cloudy Weather
81°
Feels Like 79°
34
Humidity: 61%
UV Index: 1
Wind: 12 mph
6 PM
Cloudy Weather
81°
Feels Like 81°
34
Humidity: 59%
UV Index: 1
Wind: 13 mph
7 PM
Cloudy Weather
79°
Feels Like 77°
24
Humidity: 65%
UV Index: 1
Wind: 13 mph
8 PM
Cloudy Weather
79°
Feels Like 75°
6
Humidity: 66%
UV Index: 0
Wind: 15 mph
9 PM
Cloudy Weather
75°
Feels Like 73°
6
Humidity: 72%
UV Index: 0
Wind: 16 mph
10 PM
Cloudy Night
75°
Feels Like 72°
6
Humidity: 72%
UV Index: 0
Wind: 16 mph
11 PM
Cloudy Night
72°
Feels Like 70°
6
Humidity: 76%
UV Index: 0
Wind: 16 mph

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 6.08 µg/m³
  • PM10: 6.23 µg/m³
  • O3: 0.020 ppm
  • NO2: 2.8 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

6 AM
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.31 µg/m³
  • PM10: 6.46 µg/m³
  • O3: 0.019 ppm
  • NO2: 2.6 ppb
  • SO2: 0.3 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

7 AM
27 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.41 µg/m³
  • PM10: 6.57 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.5 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

8 AM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.78 µg/m³
  • PM10: 6.96 µg/m³
  • O3: 0.016 ppm
  • NO2: 2.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

9 AM
28 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.68 µg/m³
  • PM10: 6.91 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.5 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.32 µg/m³
  • PM10: 6.61 µg/m³
  • O3: 0.015 ppm
  • NO2: 2.6 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

11 AM
26 AQI
Good air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 6.33 µg/m³
  • PM10: 6.69 µg/m³
  • O3: 0.017 ppm
  • NO2: 2.4 ppb
  • SO2: 0.1 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.25 µg/m³
  • PM10: 7.62 µg/m³
  • O3: 0.024 ppm
  • NO2: 1.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.14 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.62 µg/m³
  • PM10: 8.01 µg/m³
  • O3: 0.028 ppm
  • NO2: 1.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.59 µg/m³
  • PM10: 8 µg/m³
  • O3: 0.031 ppm
  • NO2: 1.4 ppb
  • SO2: 0.2 ppb
  • CO: 0.13 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.54 µg/m³
  • PM10: 7.9 µg/m³
  • O3: 0.039 ppm
  • NO2: 0.9 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.67 µg/m³
  • PM10: 8.02 µg/m³
  • O3: 0.044 ppm
  • NO2: 0.7 ppb
  • SO2: 0.2 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.52 µg/m³
  • PM10: 7.85 µg/m³
  • O3: 0.046 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.08 µg/m³
  • PM10: 7.43 µg/m³
  • O3: 0.048 ppm
  • NO2: 0.6 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.57 µg/m³
  • PM10: 6.97 µg/m³
  • O3: 0.049 ppm
  • NO2: 0.8 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.34 µg/m³
  • PM10: 6.83 µg/m³
  • O3: 0.049 ppm
  • NO2: 1 ppb
  • SO2: 0.2 ppb
  • CO: 0.11 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 6.66 µg/m³
  • PM10: 7.29 µg/m³
  • O3: 0.047 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 7.35 µg/m³
  • PM10: 8.15 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.3 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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

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

Pollutant Concentrations:

  • PM2.5: 8 µg/m³
  • PM10: 9 µg/m³
  • O3: 0.046 ppm
  • NO2: 1.2 ppb
  • SO2: 0.3 ppb
  • CO: 0.12 ppm

Health Recommendations:

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