Outdoor conditions in

St. Clair census-designated place, Blair County

Pennsylvania
Now
  1. 64°Slight Chance Rain Showers17% rain67% humidityGusts 13 mph
  2. 62°Slight Chance Rain Showers19% rain72% humidityGusts 13 mph
  3. 61°Mostly Cloudy12% rain78% humidityGusts 14 mph
  4. 59°Cloudy9% rain83% humidityGusts 15 mph
  5. 59°Cloudy5% rain83% humidityGusts 16 mph
  6. 58°Cloudy11% rain90% humidityGusts 16 mph
  7. 58°Chance Showers And Thunderstorms30% rain90% humidityGusts 16 mph
  8. 57°Chance Showers And Thunderstorms49% rain93% humidityGusts 16 mph
  9. 57°Showers And Thunderstorms Likely55% rain96% humidityGusts 15 mph
  10. 56°Showers And Thunderstorms Likely74% rain100% humidityGusts 17 mph
  11. 57°Showers And Thunderstorms Likely71% rain100% humidityGusts 17 mph
  12. 57°Showers And Thunderstorms Likely67% rain100% humidityGusts 20 mph
  13. 58°Chance Rain Showers54% rain100% humidityGusts 20 mph
  14. 58°Slight Chance Rain Showers22% rain100% humidityGusts 20 mph
  15. 59°Slight Chance Rain Showers15% rain100% humidityGusts 18 mph
  16. 60°Partly Sunny6% rain100% humidityGusts 18 mph
  17. 64°Mostly Sunny6% rain97% humidityGusts 21 mph
  18. 70°Slight Chance Rain Showers15% rain84% humidityGusts 21 mph
  19. 74°Mostly Sunny7% rain76% humidityGusts 22 mph
  20. 77°Slight Chance Showers And Thunderstorms16% rain69% humidityGusts 26 mph
  21. 79°Slight Chance Showers And Thunderstorms21% rain64% humidityGusts 29 mph
  22. 78°Showers And Thunderstorms79% rain64% humidityGusts 30 mph
  23. 75°Showers And Thunderstorms Likely72% rain69% humidityGusts 30 mph
  24. 71°Chance Showers And Thunderstorms46% rain73% humidityGusts 28 mph
Extra care for

A little farther out

The next five days

Today

Today looks fairly quiet.

Rain
30%
Humidity
67–90%
Wind
16 mph
Fri

Friday looks wet for a meaningful stretch.

Rain
79%
Humidity
64–100%
Wind
30 mph
Sat

Saturday looks breezy.

Rain
16%
Humidity
41–86%
Wind
26 mph
Sun

Sunday looks fairly quiet.

Rain
2%
Humidity
40–85%
Wind
8 mph
Mon

Monday looks fairly quiet.

Rain
6%
Humidity
44–89%
Wind
8 mph
  1. 64° / 58°Today looks fairly quiet.30% rain · Humidity 67–90% · Wind 16 mph
  2. 79° / 53°Friday looks wet for a meaningful stretch.79% rain · Humidity 64–100% · Wind 30 mph
  3. 51° / 37°Saturday looks breezy.16% rain · Humidity 41–86% · Wind 26 mph
  4. 59° / 31°Sunday looks fairly quiet.2% rain · Humidity 40–85% · Wind 8 mph
  5. 64° / 34°Monday looks fairly quiet.6% rain · Humidity 44–89% · Wind 8 mph

Environmental watch

Air quality + smoke

Air quality

Altoona area · Updated Thu 5:25 PM
24GoodUS AQI

Good through Sat 12 PM.

Sky check

No plume detected overhead

Satellite view · Updated Thu 2:45 PM

Air near ground24 · Good US AQI

Rain, in motion · Past four hours

St. Clair radar

Ready when you areSee what is moving toward St. Clair.

Watch the last four hours of rain, then search any nearby trail, lake, or address.

View the official forecast ↗

Outdoor fire check

Thinking about a backyard fire?

Weather is less concerning around 5 PM–8 PM.

Humidity stays higher and winds stay lighter for at least three hours.

Next 12 hoursChoose a time to see what is driving the concern.
Selected timeNowLower weather concern

Humidity is 67% with light wind and gusts below 14 mph.

Humidity
67%
Wind
6 mph
Gusts
13 mph

Check local rules. Weather is only part of the decision. Check city, county, and land-manager fire restrictions before lighting any outdoor fire.

About these readingsSources and local limits

Weather

Forecasts, alerts, and radar come from NOAA and the National Weather Service.

Air quality

This reading describes Altoona area, about 9 miles away. Conditions can differ at this exact spot.

Smoke

Satellite imagery shows smoke overhead. It cannot tell us how much smoke has reached breathing level.

This page represents St. Clair, PA, so conditions can vary from street to street. Environmental data: AirNow · participating air agencies · preliminary real-time US AQI · NOAA Hazard Mapping System · satellite-observed smoke.