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Today Hourly 7 days 30 days Air Quality
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Hourly Weather | Today › Sunday, December 14, 2025
Active Weather Warnings
Rialto, California
6 AM
Cloudy Night
57°
Feels Like 57°
0
Humidity: 51%
Wind: 5 mph
UV Index: 0
7 AM
Cloudy Weather
57°
Feels Like 57°
0
Humidity: 47%
Wind: 5 mph
UV Index: 0
8 AM
Cloudy Weather
61°
Feels Like 63°
0
Humidity: 44%
Wind: 5 mph
UV Index: 1
9 AM
Cloudy Weather
63°
Feels Like 66°
0
Humidity: 41%
Wind: 4 mph
UV Index: 2
10 AM
Cloudy Weather
68°
Feels Like 70°
0
Humidity: 34%
Wind: 4 mph
UV Index: 2
11 AM
Cloudy Weather
72°
Feels Like 75°
0
Humidity: 30%
Wind: 4 mph
UV Index: 3
12 PM
Cloudy Weather
73°
Feels Like 77°
0
Humidity: 26%
Wind: 5 mph
UV Index: 3
1 PM
Cloudy Weather
77°
Feels Like 79°
0
Humidity: 23%
Wind: 5 mph
UV Index: 3
2 PM
Cloudy Weather
79°
Feels Like 81°
0
Humidity: 22%
Wind: 5 mph
UV Index: 2
3 PM
Cloudy Weather
77°
Feels Like 79°
0
Humidity: 24%
Wind: 5 mph
UV Index: 2
4 PM
Cloudy Weather
75°
Feels Like 75°
0
Humidity: 27%
Wind: 5 mph
UV Index: 1
5 PM
Cloudy Night
72°
Feels Like 70°
0
Humidity: 30%
Wind: 6 mph
UV Index: 0
6 PM
Cloudy Night
70°
Feels Like 66°
0
Humidity: 31%
Wind: 6 mph
UV Index: 0
7 PM
Cloudy Night
66°
Feels Like 64°
0
Humidity: 34%
Wind: 6 mph
UV Index: 0
8 PM
Cloudy Night
64°
Feels Like 63°
0
Humidity: 36%
Wind: 6 mph
UV Index: 0
9 PM
Cloudy Night
63°
Feels Like 61°
0
Humidity: 39%
Wind: 6 mph
UV Index: 0
10 PM
Cloudy Night
59°
Feels Like 57°
0
Humidity: 43%
Wind: 6 mph
UV Index: 0
11 PM
Cloudy Night
57°
Feels Like 55°
0
Humidity: 44%
Wind: 6 mph
UV Index: 0

Hourly Air Quality Forecast - AQI (US EPA)

6 AM
130 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 47.52 µg/m³
  • PM10: 59.48 µg/m³
  • O3: 0.037 ppm
  • NO2: 2.3 ppb
  • SO2: 1 ppb
  • CO: 0.30 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

7 AM
125 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 45.38 µg/m³
  • PM10: 57.39 µg/m³
  • O3: 0.036 ppm
  • NO2: 2.5 ppb
  • SO2: 1.1 ppb
  • CO: 0.29 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

8 AM
123 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 44.76 µg/m³
  • PM10: 56.91 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.2 ppb
  • SO2: 1.1 ppb
  • CO: 0.29 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

9 AM
122 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 44.3 µg/m³
  • PM10: 56.59 µg/m³
  • O3: 0.034 ppm
  • NO2: 3.9 ppb
  • SO2: 1.2 ppb
  • CO: 0.30 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

10 AM
118 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 42.6 µg/m³
  • PM10: 54.83 µg/m³
  • O3: 0.036 ppm
  • NO2: 4.2 ppb
  • SO2: 1.3 ppb
  • CO: 0.30 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

11 AM
108 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 38.43 µg/m³
  • PM10: 50.37 µg/m³
  • O3: 0.040 ppm
  • NO2: 4 ppb
  • SO2: 1.3 ppb
  • CO: 0.27 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

12 PM
105 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 37.45 µg/m³
  • PM10: 49.4 µg/m³
  • O3: 0.045 ppm
  • NO2: 4.1 ppb
  • SO2: 1.3 ppb
  • CO: 0.26 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

1 PM
109 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.03 µg/m³
  • PM10: 51.2 µg/m³
  • O3: 0.051 ppm
  • NO2: 4.2 ppb
  • SO2: 1.3 ppb
  • CO: 0.26 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

2 PM
111 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 39.66 µg/m³
  • PM10: 51.98 µg/m³
  • O3: 0.056 ppm
  • NO2: 4.2 ppb
  • SO2: 1.4 ppb
  • CO: 0.25 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

3 PM
105 AQI
Unhealthy air quality for sensitive groups Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 37.32 µg/m³
  • PM10: 49.45 µg/m³
  • O3: 0.058 ppm
  • NO2: 4.2 ppb
  • SO2: 1.3 ppb
  • CO: 0.24 ppm

Health Recommendations:

Members of sensitive groups may experience health effects. The general public is less likely to be affected.

4 PM
95 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 32.93 µg/m³
  • PM10: 44.51 µg/m³
  • O3: 0.056 ppm
  • NO2: 4.1 ppb
  • SO2: 1.2 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

5 PM
88 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 29.55 µg/m³
  • PM10: 40.54 µg/m³
  • O3: 0.054 ppm
  • NO2: 4 ppb
  • SO2: 1.1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

6 PM
83 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 27.67 µg/m³
  • PM10: 38.22 µg/m³
  • O3: 0.051 ppm
  • NO2: 3.5 ppb
  • SO2: 1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

7 PM
80 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.23 µg/m³
  • PM10: 36.42 µg/m³
  • O3: 0.049 ppm
  • NO2: 3.2 ppb
  • SO2: 1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

8 PM
82 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 26.87 µg/m³
  • PM10: 36.96 µg/m³
  • O3: 0.047 ppm
  • NO2: 3.2 ppb
  • SO2: 1 ppb
  • CO: 0.20 ppm

Health Recommendations:

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

9 PM
86 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 28.91 µg/m³
  • PM10: 39.05 µg/m³
  • O3: 0.046 ppm
  • NO2: 3.2 ppb
  • SO2: 1 ppb
  • CO: 0.21 ppm

Health Recommendations:

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

10 PM
90 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 30.71 µg/m³
  • PM10: 40.94 µg/m³
  • O3: 0.044 ppm
  • NO2: 3.1 ppb
  • SO2: 1 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

11 PM
91 AQI
Moderate air quality Dominant pollutant: PM2.5
Details

Pollutant Concentrations:

  • PM2.5: 31.21 µg/m³
  • PM10: 41.42 µg/m³
  • O3: 0.043 ppm
  • NO2: 2.9 ppb
  • SO2: 0.9 ppb
  • CO: 0.22 ppm

Health Recommendations:

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

Current Real-Time Air Quality Report

Weather Alerts and Warnings for Rialto

Air Quality Alert

Air Quality Alert issued December 13 at 1:15PM PST by NWS San Diego CA
Dec 13, 1:15 PM → Dec 14, 1:15 PM
WHAT: The South Coast AQMD has extended a mandatory wood-burning
ban for residents in the South Coast Air Basin. The No-Burn rule
bans burning wood, pellets, and manufactured fire logs in any indoor
or outdoor wood-burning device.

WHERE: The South Coast Air Basin, which includes Orange County
and non-desert portions of Los Angeles, Riverside, and San
Bernardino counties. No-Burn Day alerts do not apply to areas above
3,000 feet in elevation, the Coachella Valley, or the High Desert.
Homes that rely on wood as a sole source of heat, low-income
households and those without natural gas service also are exempt
from the requirement.

WHEN: until 11:59 PM Sunday.

IMPACTS: Particles in smoke can get deep into the lungs and cause
health problems (including asthma attacks), increases in emergency
room visits, and hospitalizations. No-Burn Days are needed to
protect public health when fine particle pollution levels are
expected to be high anywhere in the South Coast Air Basin. No-Burn
Days are based on fine particle pollution levels that are forecasted
for an entire 24-hour period, which may not be reflected in
real-time air quality maps.
+ Read More
To protect your health, check current and forecasted air quality levels at www.aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. When air quality is poor in your area, limited extended or intense outdoor activity and remain inside with windows and doors closed. Run your air conditioner and/or an air purifier and avoid using devices that bring in outside air like a swamp cooler or whole house fan if you have other ways to stay cool. Additional details for this air quality alert are available at www.aqmd.gov/advisory. Information on the South Coast AQMD Check Before You Burn program is available at www.aqmd.gov/cbyb.
Updated: Dec 14, 3:36 AM Source: NWS Alert