St. Clair, PA

Hourly

1 PM

84° RealFeel® 92° 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 7% Mostly cloudy

• RealFeel Shade™: 85°
• Heat Index: 87°
• Wind: SE 5 mph
• Air Quality: Fair
• Max UV Index: 4.2 (Moderate)
• Wind Gusts: 6 mph
• Humidity: 54%
• Indoor Humidity: 54% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 5 (Medium)
• Cloud Cover: 76%
• Visibility: 10 mi
• Cloud Ceiling: 2000 ft

2 PM

86° RealFeel® 95° 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 7% Mostly cloudy

• RealFeel Shade™: 86°
• Heat Index: 88°
• Wind: SE 5 mph
• Air Quality: Fair
• Max UV Index: 6.3 (High)
• Wind Gusts: 6 mph
• Humidity: 51%
• Indoor Humidity: 51% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 5 (Medium)
• Cloud Cover: 78%
• Visibility: 10 mi
• Cloud Ceiling: 21600 ft

3 PM

87° RealFeel® 95° 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 7% Intermittent clouds

• RealFeel Shade™: 87°
• Heat Index: 89°
• Wind: SSE 5 mph
• Air Quality: Fair
• Max UV Index: 5.1 (Moderate)
• Wind Gusts: 6 mph
• Humidity: 49%
• Indoor Humidity: 49% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 5 (Medium)
• Cloud Cover: 74%
• Visibility: 10 mi
• Cloud Ceiling: 21600 ft

4 PM

86° 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 7% Intermittent clouds

• RealFeel Shade™: 87°
• Heat Index: 88°
• Wind: S 5 mph
• Air Quality: Fair
• Max UV Index: 3.9 (Moderate)
• Wind Gusts: 6 mph
• Humidity: 50%
• Indoor Humidity: 50% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 6 (Medium)
• Cloud Cover: 64%
• Visibility: 10 mi
• Cloud Ceiling: 21600 ft

5 PM

85° RealFeel® 91° 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 7% Intermittent clouds

• RealFeel Shade™: 86°
• Heat Index: 87°
• Wind: S 5 mph
• Air Quality: Fair
• Max UV Index: 3.2 (Moderate)
• Wind Gusts: 6 mph
• Humidity: 51%
• Indoor Humidity: 51% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 7 (Bright)
• Cloud Cover: 53%
• Visibility: 10 mi
• Cloud Ceiling: 21600 ft

6 PM

84° RealFeel® 89° 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 7% Partly sunny

• RealFeel Shade™: 85°
• Heat Index: 86°
• Wind: S 5 mph
• Air Quality: Fair
• Max UV Index: 2.2 (Low)
• Wind Gusts: 5 mph
• Humidity: 54%
• Indoor Humidity: 54% (Humid)
• Dew Point: 66° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 41%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

83° 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 5% Partly sunny

• RealFeel Shade™: 84°
• Heat Index: 85°
• Wind: S 4 mph
• Air Quality: Fair
• Max UV Index: 1.3 (Low)
• Wind Gusts: 5 mph
• Humidity: 59%
• Indoor Humidity: 59% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 8 (Bright)
• Cloud Cover: 31%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

81° 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 0% Mostly sunny

• RealFeel Shade™: 83°
• Heat Index: 83°
• Wind: ESE 4 mph
• Air Quality: Fair
• Max UV Index: 0.4 (Low)
• Wind Gusts: 5 mph
• Humidity: 63%
• Indoor Humidity: 63% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 2 (Dark)
• Cloud Cover: 22%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

78° RealFeel® 80° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly clear

• Wind: ESE 4 mph
• Air Quality: Fair
• Wind Gusts: 5 mph
• Humidity: 71%
• Indoor Humidity: 71% (Very Humid)
• Dew Point: 68° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 16%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

75° RealFeel® 77° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly clear

• Wind: ESE 4 mph
• Air Quality: Fair
• Wind Gusts: 5 mph
• Humidity: 78%
• Indoor Humidity: 78% (Very Humid)
• Dew Point: 68° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 12%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

72° RealFeel® 74° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 0% Mostly clear

• Wind: SE 4 mph
• Air Quality: Fair
• Wind Gusts: 5 mph
• Humidity: 85%
• Indoor Humidity: 85% (Very Humid)
• Dew Point: 67° F
• AccuLumen Brightness Index™: 0 (Dark)
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft