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Hottest day yet as heat wave intensifies in the eastern US. Click for the forecast. Chevron right
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Boston, MA

99°F
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Boston, MA Weather
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4 PM

98°
RealFeel® 110°
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 14%
Chevron down
Hazy sunshine
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday
alerts

Air Quality Alert

1:52 AM Thursday - 11:00 PM Thursday

RealFeel Shade™105°

Heat Index112°

WindW 9 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts18 mph

Humidity51%

Indoor Humidity51% (Extremely Humid)

Dew Point77° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover47%

Visibility5 mi

Cloud Ceiling30000 ft

5 PM

95°
RealFeel® 100°
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 47%
Chevron down
Hazy sunshine
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday
alerts

Air Quality Alert

1:52 AM Thursday - 11:00 PM Thursday

RealFeel Shade™97°

Heat Index102°

WindW 10 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts21 mph

Humidity44%

Indoor Humidity44% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover65%

Visibility5 mi

Cloud Ceiling30000 ft

6 PM

95°
RealFeel® 96°
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 51%
Chevron down
Mostly cloudy w/ t-storms
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday
alerts

Air Quality Alert

1:52 AM Thursday - 11:00 PM Thursday

RealFeel Shade™94°

Heat Index102°

WindW 9 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts20 mph

Humidity46%

Indoor Humidity46% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover67%

Rain0.04 in

Visibility5 mi

Cloud Ceiling30000 ft

7 PM

94°
RealFeel® 96°
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 47%
Chevron down
Hazy sunshine
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday
alerts

Air Quality Alert

1:52 AM Thursday - 11:00 PM Thursday

RealFeel Shade™95°

Heat Index99°

WindW 9 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts17 mph

Humidity43%

Indoor Humidity43% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover69%

Visibility5 mi

Cloud Ceiling30000 ft

8 PM

92°
RealFeel® 93°
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 5%
Chevron down
Mostly sunny
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday
alerts

Air Quality Alert

1:52 AM Thursday - 11:00 PM Thursday

RealFeel Shade™93°

Heat Index96°

WindW 8 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts16 mph

Humidity47%

Indoor Humidity47% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

89°
RealFeel® 90°
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 5%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday
alerts

Air Quality Alert

1:52 AM Thursday - 11:00 PM Thursday

Heat Index93°

WindW 8 mph

Air QualityFair

Wind Gusts16 mph

Humidity52%

Indoor Humidity52% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

86°
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 5%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday
alerts

Air Quality Alert

1:52 AM Thursday - 11:00 PM Thursday

Heat Index91°

WindW 8 mph

Air QualityFair

Wind Gusts15 mph

Humidity58%

Indoor Humidity58% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

86°
RealFeel® 90°
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 5%
Chevron down
Mostly clear
alerts

Extreme Heat Warning

10:00 AM Wednesday - 8:00 PM Saturday

Heat Index93°

WindW 8 mph

Air QualityFair

Wind Gusts14 mph

Humidity62%

Indoor Humidity62% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Boston

AccuWeather's hourly forecast for Boston provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 98° with a RealFeel® of 110°, hazy sunshine with a 14% 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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