Hourly Weather | Today Saturday, September 13, 2025
Ontario, California
5 AM
Cloudy Night
63°
Feels Like 63°
0
Humidity: 95%
Wind: 4 mph
UV Index: 0
6 AM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 94%
Wind: 4 mph
UV Index: 0
7 AM
Cloudy Weather
61°
Feels Like 63°
0
Humidity: 91%
Wind: 4 mph
UV Index: 1
8 AM
Cloudy Weather
64°
Feels Like 66°
0
Humidity: 86%
Wind: 4 mph
UV Index: 12
9 AM
Cloudy Weather
66°
Feels Like 70°
0
Humidity: 80%
Wind: 4 mph
UV Index: 22
10 AM
Cloudy Weather
70°
Feels Like 75°
0
Humidity: 72%
Wind: 4 mph
UV Index: 35
11 AM
Cloudy Weather
72°
Feels Like 81°
0
Humidity: 65%
Wind: 5 mph
UV Index: 49
12 PM
Cloudy Weather
75°
Feels Like 82°
0
Humidity: 57%
Wind: 6 mph
UV Index: 66
1 PM
Cloudy Weather
79°
Feels Like 84°
0
Humidity: 50%
Wind: 8 mph
UV Index: 73
2 PM
Cloudy Weather
82°
Feels Like 86°
0
Humidity: 46%
Wind: 9 mph
UV Index: 66
3 PM
Cloudy Weather
84°
Feels Like 84°
0
Humidity: 43%
Wind: 10 mph
UV Index: 49
4 PM
Cloudy Weather
82°
Feels Like 82°
0
Humidity: 45%
Wind: 12 mph
UV Index: 35
5 PM
Cloudy Weather
81°
Feels Like 81°
0
Humidity: 47%
Wind: 10 mph
UV Index: 22
6 PM
Cloudy Weather
79°
Feels Like 77°
0
Humidity: 52%
Wind: 9 mph
UV Index: 12
7 PM
Cloudy Weather
75°
Feels Like 73°
0
Humidity: 58%
Wind: 9 mph
UV Index: 1
8 PM
Cloudy Night
73°
Feels Like 70°
0
Humidity: 65%
Wind: 8 mph
UV Index: 0
9 PM
Cloudy Night
70°
Feels Like 68°
0
Humidity: 72%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy Night
68°
Feels Like 66°
0
Humidity: 78%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 79%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

5 AM
57 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 22.33 µg/m³
  • PM10: 24.69 µg/m³
  • O₃: 11.45 ppb
  • NO₂: 21.07 ppb
  • SO₂: 3.92 ppb
  • CO: 213.96 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

6 AM
58 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 24.47 µg/m³
  • PM10: 26.02 µg/m³
  • O₃: 10.16 ppb
  • NO₂: 20.70 ppb
  • SO₂: 3.69 ppb
  • CO: 235.45 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

7 AM
60 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 25.74 µg/m³
  • PM10: 26.63 µg/m³
  • O₃: 8.87 ppb
  • NO₂: 20.32 ppb
  • SO₂: 3.47 ppb
  • CO: 256.94 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

8 AM
61 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 28.30 µg/m³
  • PM10: 29.53 µg/m³
  • O₃: 7.59 ppb
  • NO₂: 19.95 ppb
  • SO₂: 3.24 ppb
  • CO: 278.44 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

9 AM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 18.87 µg/m³
  • PM10: 21.34 µg/m³
  • O₃: 21.54 ppb
  • NO₂: 15.26 ppb
  • SO₂: 3.01 ppb
  • CO: 242.49 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

10 AM
62 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.84 µg/m³
  • PM10: 18.41 µg/m³
  • O₃: 35.50 ppb
  • NO₂: 10.58 ppb
  • SO₂: 2.78 ppb
  • CO: 206.55 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

11 AM
63 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.62 µg/m³
  • PM10: 18.91 µg/m³
  • O₃: 49.45 ppb
  • NO₂: 5.89 ppb
  • SO₂: 2.55 ppb
  • CO: 170.61 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

12 PM
64 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.00 µg/m³
  • PM10: 19.08 µg/m³
  • O₃: 57.14 ppb
  • NO₂: 5.02 ppb
  • SO₂: 2.41 ppb
  • CO: 166.43 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

1 PM
64 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.99 µg/m³
  • PM10: 18.93 µg/m³
  • O₃: 64.83 ppb
  • NO₂: 4.15 ppb
  • SO₂: 2.27 ppb
  • CO: 162.26 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

2 PM
65 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.13 µg/m³
  • PM10: 19.00 µg/m³
  • O₃: 72.52 ppb
  • NO₂: 3.27 ppb
  • SO₂: 2.13 ppb
  • CO: 158.09 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

3 PM
65 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.50 µg/m³
  • PM10: 19.35 µg/m³
  • O₃: 73.36 ppb
  • NO₂: 3.64 ppb
  • SO₂: 2.47 ppb
  • CO: 158.33 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.

4 PM
66 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 17.96 µg/m³
  • PM10: 19.78 µg/m³
  • O₃: 74.19 ppb
  • NO₂: 4.01 ppb
  • SO₂: 2.82 ppb
  • CO: 158.56 ppb

Health Recommendations:

Air quality is currently in the acceptable range. However, sensitive individuals should be aware of potential risks from certain pollutants.