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Rialto, CA

68°F
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Rialto

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Rialto, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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7 AM

71°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™72°

WindNE 2 mph

Air QualityPoor

Max UV Index0.9 (Low)

Wind Gusts4 mph

Humidity54%

Indoor Humidity54% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover4%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

71°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™69°

WindESE 2 mph

Air QualityPoor

Max UV Index1.9 (Low)

Wind Gusts2 mph

Humidity64%

Indoor Humidity64% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover8%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

75°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™74°

WindSSW 2 mph

Air QualityPoor

Max UV Index3.2 (Moderate)

Wind Gusts4 mph

Humidity51%

Indoor Humidity51% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover6%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

81°
RealFeel® 87°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™79°

Heat Index81°

WindSW 4 mph

Air QualityPoor

Max UV Index4.7 (Moderate)

Wind Gusts4 mph

Humidity41%

Indoor Humidity41% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover3%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

88°
RealFeel® 97°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™86°

Heat Index86°

WindSW 5 mph

Air QualityPoor

Max UV Index7.4 (High)

Wind Gusts5 mph

Humidity32%

Indoor Humidity32% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

95°
RealFeel® 103°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™92°

Heat Index92°

WindSW 5 mph

Air QualityPoor

Max UV Index10.0 (Very High)

Wind Gusts6 mph

Humidity24%

Indoor Humidity24% (Ideal Humidity)

Dew Point53° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

99°
RealFeel® 107°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™95°

Heat Index95°

WindSW 6 mph

Air QualityPoor

Max UV Index11.3 (Extreme)

Wind Gusts9 mph

Humidity19%

Indoor Humidity19% (Ideal Humidity)

Dew Point49° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

102°
RealFeel® 108°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™98°

Heat Index98°

WindSW 7 mph

Air QualityPoor

Max UV Index10.0 (Very High)

Wind Gusts12 mph

Humidity16%

Indoor Humidity16% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

104°
RealFeel® 108°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™101°

Heat Index100°

WindWSW 8 mph

Air QualityPoor

Max UV Index7.4 (High)

Wind Gusts15 mph

Humidity15%

Indoor Humidity15% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

103°
RealFeel® 104°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™100°

Heat Index100°

WindWSW 9 mph

Air QualityPoor

Max UV Index4.7 (Moderate)

Wind Gusts18 mph

Humidity17%

Indoor Humidity17% (Ideal Humidity)

Dew Point50° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

102°
RealFeel® 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™99°

Heat Index99°

WindWSW 10 mph

Air QualityPoor

Max UV Index3.2 (Moderate)

Wind Gusts22 mph

Humidity18%

Indoor Humidity18% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

100°
RealFeel® 98°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™97°

Heat Index97°

WindWSW 9 mph

Air QualityPoor

Max UV Index1.9 (Low)

Wind Gusts17 mph

Humidity21%

Indoor Humidity21% (Ideal Humidity)

Dew Point53° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover2%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

96°
RealFeel® 94°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

RealFeel Shade™94°

Heat Index94°

WindWSW 8 mph

Air QualityPoor

Max UV Index0.9 (Low)

Wind Gusts14 mph

Humidity25%

Indoor Humidity25% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover4%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

91°
RealFeel® 88°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

Heat Index90°

WindWSW 7 mph

Air QualityPoor

Wind Gusts10 mph

Humidity32%

Indoor Humidity32% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

88°
RealFeel® 86°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

Heat Index87°

WindWSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity37%

Indoor Humidity37% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

85°
RealFeel® 83°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

Heat Index85°

WindWSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity42%

Indoor Humidity42% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

82°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:00 PM Thursday - 8:00 PM Sunday

Heat Index83°

WindWSW 5 mph

Air QualityPoor

Wind Gusts5 mph

Humidity46%

Indoor Humidity46% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Rialto

AccuWeather's hourly forecast for Rialto provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 71° with a RealFeel® of 72°, sunny with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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