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Weather Tomorrow

Upper Saint Clair air quality

Pennsylvania, United States · New_York time · 40.34°, -80.08°

Current conditions · 10:00 AM local

Current conditions in Upper Saint Clair

71°F

Clear sky

Feels like 70°F

Humidity
54%
Wind
6 mph W
Gusts
9 mph
UV index
3.6
Visibility
20.1 mi

Air quality

53

Moderate

US AQI · European AQI 35

Air quality in Upper Saint Clair is currently moderate, with a US AQI of 53 (European AQI 35). The dominant pollutant right now is ozone. Unusually sensitive people should consider easing prolonged outdoor exertion. Fine particulate matter (PM2.5) measures 9.8 µg/m³.

Pollutants

PM2.5
9.8 µg/m³
PM10
10.2 µg/m³
Ozone (O₃)
88 µg/m³
NO₂
5.1 µg/m³
SO₂
2.3 µg/m³
CO
124 µg/m³
Dust
1 µg/m³

AQI computed from the CAMS air quality model via Open-Meteo. Bands follow the US EPA scale.

Right now

Conditions in Upper Saint Clair at the moment: clear sky, 22 °C. It feels close to the actual reading at 21 °C. Wind is from the W at 9 km/h. Humidity stands at 54% with sea-level pressure near 1014 hPa.

At a glance

Today

81° / 55°

Overcast

Tomorrow

83° / 65°

Heavy rain · rain likely (60%)

Upcoming · to Saturday

84° / 53°

Highs 84°, lows 53°. The most active day looks like Tuesday, when rain chances peak at 54%.

Next 3 days

Today looks like overcast; temperatures run from 12 °C up to 27 °C. Expect heavy rain tomorrow, between 18 °C and 28 °C. Rain chance peaks at 60% with around 15.5 mm possible. Gusts may reach 53 km/h from the SSW. Expect overcast Tuesday, between 14 °C and 24 °C. Rain chance peaks at 54% with around 0.3 mm possible.

Today

Sun, Jun 21

Overcast

81°55°

Rain chance
4%
Precip
0 in
Max wind
9 mph

Tomorrow

Mon, Jun 22

Heavy rain

83°65°

Rain chance
60%
Precip
0.6 in
Max wind
20 mph

Tuesday

Tue, Jun 23

Overcast

75°57°

Rain chance
54%
Precip
0 in
Max wind
10 mph

Next 48 hours

  1. 12 AM62°3%1 mph
  2. 1 AM61°0%3 mph
  3. 2 AM59°0%3 mph
  4. 3 AM57°0%2 mph
  5. 4 AM56°0%3 mph
  6. 5 AM55°0%3 mph
  7. 6 AM55°0%2 mph
  8. 7 AM57°0%2 mph
  9. 8 AM62°0%3 mph
  10. 9 AM67°0%6 mph
  11. 10 AM71°0%6 mph
  12. 11 AM73°0%6 mph
  13. 12 PM76°0%6 mph
  14. 1 PM78°0%6 mph
  15. 2 PM79°0%5 mph
  16. 3 PM81°0%6 mph
  17. 4 PM81°0%4 mph
  18. 5 PM80°0%9 mph
  19. 6 PM79°1%9 mph
  20. 7 PM78°1%7 mph
  21. 8 PM77°2%6 mph
  22. 9 PM73°2%4 mph
  23. 10 PM70°3%5 mph
  24. 11 PM69°4%4 mph
  25. 12 AM69°4%3 mph
  26. 1 AM68°4%5 mph
  27. 2 AM67°6%6 mph
  28. 3 AM67°13%8 mph
  29. 4 AM68°17%9 mph
  30. 5 AM68°26%11 mph
  31. 6 AM67°45%11 mph
  32. 7 AM68°59%11 mph
  33. 8 AM67°60%11 mph
  34. 9 AM72°51%12 mph
  35. 10 AM76°38%16 mph
  36. 11 AM79°26%13 mph
  37. 12 PM80°27%15 mph
  38. 1 PM77°28%15 mph
  39. 2 PM78°21%15 mph
  40. 3 PM83°31%16 mph
  41. 4 PM81°39%18 mph
  42. 5 PM77°38%20 mph
  43. 6 PM75°44%16 mph
  44. 7 PM76°43%16 mph
  45. 8 PM71°38%15 mph
  46. 9 PM68°54%6 mph
  47. 10 PM69°54%5 mph
  48. 11 PM65°54%11 mph

In depth

The weather picture for Upper Saint Clair opens with clear sky; it's 22 °C out, feeling like 21 °C. Today's forecast calls for overcast, topping out near 27 °C before falling back to 12 °C overnight. Winds blow mainly from the WSW around 15 km/h, with gusts up to 21 km/h. Highs ease downward through the week, ranging 19 to 29 °C. Rain is in the picture on tomorrow, Thursday, Friday, with roughly 25 mm expected in total across the week. Tomorrow brings heavy rain with a high of 28 °C and a 60% chance of precipitation. Sunrise comes at 05:50 and sunset at 20:53, giving 15.1 hours of daylight. Current humidity sits at 54% with pressure near 1014 hPa. Looking further out, Thursday shows slight rain showers with a high around 29 °C, while Saturday ends the week at 19 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.

Sun & UV

Sunrise
5:50 AM
Sunset
8:53 PM
Daylight
15h 03m
Max UV
5.75 Moderate

Wind

Wind
6 mph
Gusts
9 mph
Direction
W (275°)

Farming weather

Soil temperatures today read surface 16.7 °C, 6 cm 18.5 °C, 18 cm 19.3 °C, 54 cm 17.3 °C. Soil moisture sits at 0-1 cm at 0.24 m³/m³, 3-9 cm at 0.24 m³/m³, 27-81 cm at 0.27 m³/m³. For maize, the root-zone reading is within the ideal 0.2-0.35 m³/m³ band. ET0 of 30 mm modestly outpaces the 25 mm of forecast rain; light supplemental irrigation may help. A suitable spraying window opens around 06:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Projected growing degree days over the next week: maize 71, wheat 110.

Topsoil moisture
0.249 m³/m³
Soil temp
62°F
ET₀ today
5.75 mm
Spray window
~5:00
Rain (next 7d)
1 in
Wind
6 mph
Humidity
54%

Full farming outlook for Upper Saint Clair →

Advisory summary

No weather alert thresholds are crossed for Upper Saint Clair in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.

All data for Upper Saint Clair
Every forecast variable for Upper Saint Clair with human-readable labels
VariableValue
CityUpper Saint Clair, Pennsylvania, United States
Coordinates40.3359, -80.08339
Elevation335 m
TimezoneAmerica/New_York
Population19,229
Observed at (local)10:00 AM
Temperature (2 m)71°F
Apparent temperature70°F
Relative humidity (2 m)54%
Dew point (2 m)53°F
Precipitation (last hour)0 in
Rain0 in
Showers0 in
Snowfall0 in
Weather code (WMO)0
Cloud cover15%
Surface pressure28.8 inHg
Sea-level pressure29.9 inHg
Wind speed (10 m)6 mph
Wind gusts (10 m)9 mph
Wind direction (10 m)275° (W)
Visibility20.1 mi
UV index3.6
Day / nightDay
Today max / min81°F / 55°F
Today feels-like max / min82°F / 54°F
Today precipitation sum0 in
Today rain sum0 in
Today snowfall sum0 in
Today max precip probability4%
Today max wind / gusts9 mph / 13 mph
Dominant wind direction237° (WSW)
Sunrise / sunset5:50 AM / 8:53 PM
Daylight duration15h 03m
Sunshine duration10h 58m
Max UV index5.75
Reference evapotranspiration (ET₀)5.75 mm
Topsoil moisture (0–1 cm)0.249 m³/m³
Surface soil temperature62°F
US AQI53
European AQI35
PM2.59.8 µg/m³
PM1010.2 µg/m³
Ozone (O₃)88 µg/m³
Nitrogen dioxide (NO₂)5.1 µg/m³
Sulphur dioxide (SO₂)2.3 µg/m³
Carbon monoxide (CO)124 µg/m³
Dust1 µg/m³

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Frequently asked questions

Will it rain in Upper Saint Clair tomorrow?

Rain is likely in Upper Saint Clair tomorrow — the chance of precipitation reaches 60%, with around 15.5 mm expected.

What is the temperature in Upper Saint Clair today?

Today Upper Saint Clair sees overcast with a high of 27 °C and a low of 12 °C.

How hot will it be in Upper Saint Clair tomorrow?

Tomorrow's high in Upper Saint Clair is forecast at 28 °C with heavy rain.

Is it windy in Upper Saint Clair today?

No, not especially; gusts only reach up to 21 km/h today.

What is the UV index in Upper Saint Clair today?

The UV index peaks at 6 today, which is moderate.

What time is sunrise and sunset in Upper Saint Clair today?

The sun rises at 05:50 and sets at 20:53 local time.

Is the air quality in Upper Saint Clair good today?

Air quality is moderate right now, with a US AQI reading of 53.