Hourly Weather | Today Friday, October 3, 2025
Ontario, California
8 AM
Cloudy Weather
63°
Feels Like 63°
7
Humidity: 83%
Wind: 5 mph
UV Index: 2
9 AM
Cloudy Weather
64°
Feels Like 64°
7
Humidity: 83%
Wind: 6 mph
UV Index: 7
10 AM
Cloudy Weather
64°
Feels Like 64°
7
Humidity: 79%
Wind: 6 mph
UV Index: 14
11 AM
Cloudy Weather
66°
Feels Like 68°
7
Humidity: 74%
Wind: 7 mph
UV Index: 24
12 PM
Cloudy Weather
70°
Feels Like 73°
7
Humidity: 66%
Wind: 8 mph
UV Index: 49
1 PM
Cloudy Weather
72°
Feels Like 75°
5
Humidity: 58%
Wind: 8 mph
UV Index: 53
2 PM
Cloudy Weather
73°
Feels Like 75°
0
Humidity: 51%
Wind: 13 mph
UV Index: 49
3 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 48%
Wind: 14 mph
UV Index: 40
4 PM
Cloudy Weather
73°
Feels Like 73°
0
Humidity: 49%
Wind: 15 mph
UV Index: 28
5 PM
Cloudy Weather
72°
Feels Like 70°
0
Humidity: 52%
Wind: 15 mph
UV Index: 18
6 PM
Cloudy Weather
70°
Feels Like 66°
0
Humidity: 56%
Wind: 15 mph
UV Index: 8
7 PM
Cloudy Night
66°
Feels Like 63°
0
Humidity: 63%
Wind: 14 mph
UV Index: 0
8 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 67%
Wind: 8 mph
UV Index: 0
9 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 72%
Wind: 7 mph
UV Index: 0
10 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 77%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
61°
Feels Like 61°
0
Humidity: 79%
Wind: 5 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

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

Pollutant Concentrations:

  • PM2.5: 26.39 µg/m³
  • PM10: 27.07 µg/m³
  • O₃: 15.28 ppb
  • NO₂: 17.99 ppb
  • SO₂: 5.46 ppb
  • CO: 247.57 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
68 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 21.29 µg/m³
  • PM10: 22.52 µg/m³
  • O₃: 21.20 ppb
  • NO₂: 13.99 ppb
  • SO₂: 4.60 ppb
  • CO: 219.81 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
68 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 16.92 µg/m³
  • PM10: 18.62 µg/m³
  • O₃: 27.12 ppb
  • NO₂: 9.98 ppb
  • SO₂: 3.74 ppb
  • CO: 192.04 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
69 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 15.78 µg/m³
  • PM10: 17.72 µg/m³
  • O₃: 33.03 ppb
  • NO₂: 5.98 ppb
  • SO₂: 2.88 ppb
  • CO: 164.28 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
69 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 14.74 µg/m³
  • PM10: 16.68 µg/m³
  • O₃: 39.20 ppb
  • NO₂: 4.98 ppb
  • SO₂: 2.61 ppb
  • CO: 155.76 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
69 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.65 µg/m³
  • PM10: 15.47 µg/m³
  • O₃: 45.37 ppb
  • NO₂: 3.97 ppb
  • SO₂: 2.34 ppb
  • CO: 147.23 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
69 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.09 µg/m³
  • PM10: 14.72 µg/m³
  • O₃: 51.54 ppb
  • NO₂: 2.97 ppb
  • SO₂: 2.07 ppb
  • CO: 138.71 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
70 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.11 µg/m³
  • PM10: 14.58 µg/m³
  • O₃: 51.60 ppb
  • NO₂: 3.89 ppb
  • SO₂: 2.37 ppb
  • CO: 140.73 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
70 AQI
Moderate air quality Dominant pollutant: pm25
Details

Pollutant Concentrations:

  • PM2.5: 13.27 µg/m³
  • PM10: 14.58 µg/m³
  • O₃: 51.67 ppb
  • NO₂: 4.81 ppb
  • SO₂: 2.66 ppb
  • CO: 142.75 ppb

Health Recommendations:

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