Current Conditions

Pio IX, Piauí

89°F32°C
Hot

Wind

SE 9 mph14 km/h

Humidity

25%

Cloud Cover

21%

As of Sunday, September 20, 2026 at 5:15 PM GMT-3

Today's Outlook

Day

Mostly clear and hot, with a high of 96°F35°C and morning low of 71°F22°C. Breezy from the SE at 10 to 12 mph16 to 19 km/h. Heat risk in the afternoon.

Night

Mostly clear, with a low around 74°F23°C. Breezy from the SE at 9 to 10 mph14 to 17 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
HotHigh 96°F35°CLow 71°F22°CPrecip 0 in0 mmCloud 6%Wind SE 9 mph15 km/hMonday: Mostly clear and hot, with a high of 96°F35°C and morning low of 71°F22°C. Breezy from the SE at 10 to 12 mph16 to 19 km/h. Heat risk in the afternoon. Monday Night: Mostly clear, with a low around 74°F23°C. Breezy from the SE at 9 to 10 mph14 to 17 km/h.
HotHigh 98°F36°CLow 72°F22°CPrecip 0 in0 mmCloud 15%Wind ESE 7 mph12 km/hTuesday: Mostly clear and hot, with a high of 98°F36°C and morning low of 72°F22°C. Breezy from the ESE at 8 to 12 mph14 to 19 km/h. Heat risk in the afternoon. Tuesday Night: Mostly clear, with a low around 74°F24°C. Breezy from the SE at 6 to 8 mph10 to 12 km/h.
HotHigh 98°F37°CLow 73°F23°CPrecip 0 in0 mmCloud 39%Wind ENE 7 mph11 km/hWednesday: Partly cloudy and hot, with a high of 98°F37°C and morning low of 73°F23°C. Breezy from the ENE at 8 to 13 mph13 to 20 km/h. Heat risk in the afternoon. Wednesday Night: Partly cloudy, with a low around 76°F24°C. Breezy from the E at 5 to 9 mph8 to 14 km/h.
HotHigh 95°F35°CLow 73°F23°CPrecip 0.01 in0.2 mm1%Cloud 36%Wind ENE 8 mph13 km/hThursday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 73°F23°C. Breezy from the ENE at 10 to 14 mph16 to 22 km/h. Heat risk in the afternoon. Thursday Night: Partly cloudy, with a low around 78°F26°C. Breezy from the ENE at 7 to 11 mph11 to 18 km/h.
HotHigh 95°F35°CLow 73°F23°CPrecip 0.01 in0.2 mm7%Cloud 35%Wind E 8 mph13 km/hFriday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 73°F23°C. Breezy from the E at 9 to 11 mph15 to 18 km/h. Heat risk in the afternoon. Friday Night: Partly cloudy, with a low around 77°F25°C. Breezy from the E at 7 to 11 mph12 to 18 km/h.
HotHigh 96°F36°CLow 73°F23°CPrecip 0 in0 mmCloud 39%Wind E 8 mph13 km/hSaturday: Partly cloudy and hot, with a high of 96°F36°C and morning low of 73°F23°C. Breezy from the E at 9 to 11 mph15 to 18 km/h. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 76°F24°C. Breezy from the E at 7 to 10 mph11 to 17 km/h.
HotHigh 95°F35°CLow 73°F23°CPrecip 0 in0 mmCloud 37%Wind E 8 mph13 km/hSunday: Partly cloudy and hot, with a high of 95°F35°C and morning low of 73°F23°C. Breezy from the E at 9 to 12 mph15 to 19 km/h. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 76°F24°C. Breezy from the E at 7 to 10 mph12 to 16 km/h.

15-Day Forecast

Day High Low Precip Cloud Cover Condition Wind
MondaySep 2196°F35°C71°F22°C0 in0 mm· —6%HotSE 9 mph15 km/h
TuesdaySep 2298°F36°C72°F22°C0 in0 mm· —15%HotESE 7 mph12 km/h
WednesdaySep 2398°F37°C73°F23°C0 in0 mm· —39%HotENE 7 mph11 km/h
ThursdaySep 2495°F35°C73°F23°C0.01 in0.2 mm· 1%36%HotENE 8 mph13 km/h
FridaySep 2595°F35°C73°F23°C0.01 in0.2 mm· 7%35%HotE 8 mph13 km/h
SaturdaySep 2696°F36°C73°F23°C0 in0 mm· —39%HotE 8 mph13 km/h
SundaySep 2795°F35°C73°F23°C0 in0 mm· —37%HotE 8 mph13 km/h
MondaySep 2894°F34°C73°F23°C0 in0.1 mm· 9%32%ClearENE 9 mph15 km/h
TuesdaySep 2994°F35°C72°F22°C0 in0.1 mm· 6%31%ClearENE 9 mph14 km/h
WednesdaySep 3095°F35°C72°F22°C0 in0.1 mm· 3%26%HotENE 9 mph15 km/h
ThursdayOct 195°F35°C72°F22°C0 in0 mm· —26%HotENE 10 mph16 km/h
FridayOct 294°F35°C72°F22°C0 in0.1 mm· 4%31%ClearENE 9 mph15 km/h
SaturdayOct 392°F34°C72°F22°C0.02 in0.4 mm· 15%45%DrizzleENE 9 mph15 km/h
SundayOct 493°F34°C72°F22°C0.02 in0.4 mm· 9%37%ClearENE 9 mph15 km/h
MondayOct 594°F34°C72°F22°C0 in0 mm· —27%ClearE 10 mph16 km/h

Nearby Cities

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 6.8354°S, 40.6130°W·Elevation: 584m·Timezone: America/Fortaleza·Population: 17,613