Current Conditions

Castelo do Piauí, Piauí

78°F25°C

Hot

Wind

E 10 mph16 km/h

Humidity

66%

Cloud Cover

As of Friday, July 24, 2026 at 2:32 AM GMT-3

Today's Outlook

Day

Partly cloudy and hot, with a high of 94°F34°C and morning low of 76°F24°C. Breezy from the E at 11 to 14 mph18 to 22 km/h. Heat risk in the afternoon.

Night

Mostly clear, with a low around 78°F25°C. Breezy from the E at 8 to 10 mph13 to 16 km/h.

7-Day Forecast

Day	Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
FridayJul 24	Hot	High 94°F34°C	Low 76°F24°C	Precip 0 in0.1 mm5%	Cloud 26%	Wind E 10 mph16 km/h	Friday: Partly cloudy and hot, with a high of 94°F34°C and morning low of 76°F24°C. Breezy from the E at 11 to 14 mph18 to 22 km/h. Heat risk in the afternoon. Friday Night: Mostly clear, with a low around 78°F25°C. Breezy from the E at 8 to 10 mph13 to 16 km/h.
SaturdayJul 25	Hot	High 96°F35°C	Low 76°F25°C	Precip 0 in0.1 mm2%	Cloud 31%	Wind E 6 mph10 km/h	Saturday: Partly cloudy and hot, with a high of 96°F35°C and morning low of 76°F25°C. Breezy from the ESE at 8 to 10 mph13 to 16 km/h. Heat risk in the afternoon. Saturday Night: Partly cloudy, with a low around 78°F26°C. Light wind from the E around 5 mph8 km/h.
SundayJul 26	Hot	High 98°F36°C	Low 76°F24°C	Precip 0 in0 mm—	Cloud 34%	Wind E 5 mph9 km/h	Sunday: Mostly clear and hot, with a high of 98°F36°C and morning low of 76°F24°C. Breezy from the ESE at 7 to 8 mph11 to 13 km/h. Heat risk in the afternoon. Sunday Night: Partly cloudy, with a low around 78°F26°C. Light wind from the ENE around 4 mph7 km/h.
MondayJul 27	Hot	High 96°F35°C	Low 77°F25°C	Precip 0 in0.1 mm6%	Cloud 33%	Wind E 7 mph11 km/h	Monday: Partly cloudy and hot, with a high of 96°F35°C and morning low of 77°F25°C. Breezy from the E at 9 to 11 mph14 to 18 km/h. Heat risk in the afternoon. Monday Night: Partly cloudy, with a low around 80°F26°C. Breezy from the ENE at 5 to 8 mph9 to 13 km/h.
TuesdayJul 28	Clear	High 94°F35°C	Low 75°F24°C	Precip 0 in0 mm—	Cloud 25%	Wind E 8 mph13 km/h	Tuesday: Partly cloudy and hot, with a high of 94°F35°C and morning low of 75°F24°C. Breezy from the E at 10 to 14 mph16 to 22 km/h. Humid. Tuesday Night: Partly cloudy, with a low around 78°F26°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.
WednesdayJul 29	Clear	High 95°F35°C	Low 76°F24°C	Precip 0 in0.1 mm3%	Cloud 26%	Wind E 8 mph12 km/h	Wednesday: Mostly clear and hot, with a high of 95°F35°C and morning low of 76°F24°C. Breezy from the ESE at 9 to 12 mph15 to 20 km/h. Wednesday Night: Partly cloudy, with a low around 78°F26°C. Breezy from the ENE at 6 to 7 mph9 to 11 km/h.
ThursdayJul 30	Hot	High 95°F35°C	Low 75°F24°C	Precip 0 in0 mm—	Cloud 21%	Wind E 8 mph12 km/h	Thursday: Mostly clear and hot, with a high of 95°F35°C and morning low of 75°F24°C. Breezy from the E at 9 to 12 mph15 to 19 km/h. Heat risk in the afternoon. Thursday Night: Mostly clear, with a low around 77°F25°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.

15-Day Forecast

	Day	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Condition	Wind (mph)
	FridayJul 24	94°F34°C	76°F24°C	0 in0.1 mm· 5%	26%	Hot	E 10 mph16 km/h
DayPartly cloudy and hot, with a high of 94°F34°C and morning low of 76°F24°C. Breezy from the E at 11 to 14 mph18 to 22 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 78°F25°C. Breezy from the E at 8 to 10 mph13 to 16 km/h.
	SaturdayJul 25	96°F35°C	76°F25°C	0 in0.1 mm· 2%	31%	Hot	E 6 mph10 km/h
DayPartly cloudy and hot, with a high of 96°F35°C and morning low of 76°F25°C. Breezy from the ESE at 8 to 10 mph13 to 16 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Light wind from the E around 5 mph8 km/h.
	SundayJul 26	98°F36°C	76°F24°C	0 in0 mm· —	34%	Hot	E 5 mph9 km/h
DayMostly clear and hot, with a high of 98°F36°C and morning low of 76°F24°C. Breezy from the ESE at 7 to 8 mph11 to 13 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Light wind from the ENE around 4 mph7 km/h.
	MondayJul 27	96°F35°C	77°F25°C	0 in0.1 mm· 6%	33%	Hot	E 7 mph11 km/h
DayPartly cloudy and hot, with a high of 96°F35°C and morning low of 77°F25°C. Breezy from the E at 9 to 11 mph14 to 18 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 80°F26°C. Breezy from the ENE at 5 to 8 mph9 to 13 km/h.
	TuesdayJul 28	94°F35°C	75°F24°C	0 in0 mm· —	25%	Clear	E 8 mph13 km/h
DayPartly cloudy and hot, with a high of 94°F35°C and morning low of 75°F24°C. Breezy from the E at 10 to 14 mph16 to 22 km/h. Humid. NightPartly cloudy, with a low around 78°F26°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.
	WednesdayJul 29	95°F35°C	76°F24°C	0 in0.1 mm· 3%	26%	Clear	E 8 mph12 km/h
DayMostly clear and hot, with a high of 95°F35°C and morning low of 76°F24°C. Breezy from the ESE at 9 to 12 mph15 to 20 km/h. NightPartly cloudy, with a low around 78°F26°C. Breezy from the ENE at 6 to 7 mph9 to 11 km/h.
	ThursdayJul 30	95°F35°C	75°F24°C	0 in0 mm· —	21%	Hot	E 8 mph12 km/h
DayMostly clear and hot, with a high of 95°F35°C and morning low of 75°F24°C. Breezy from the E at 9 to 12 mph15 to 19 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 77°F25°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.
	FridayJul 31	95°F35°C	75°F24°C	0 in0.1 mm· 3%	22%	Clear	E 9 mph14 km/h
DayMostly clear and hot, with a high of 95°F35°C and morning low of 75°F24°C. Breezy from the E at 10 to 13 mph17 to 21 km/h. Humid. NightMostly clear, with a low around 78°F25°C. Breezy from the E at 7 mph11 km/h.
	SaturdayAug 1	94°F35°C	76°F24°C	0.01 in0.2 mm· 5%	31%	Clear	ESE 8 mph13 km/h
DayPartly cloudy and hot, with a high of 94°F35°C and morning low of 76°F24°C. Breezy from the ESE at 10 to 12 mph16 to 20 km/h. NightPartly cloudy, with a low around 78°F26°C. Breezy from the ESE at 7 mph11 km/h.
	SundayAug 2	94°F35°C	75°F24°C	0 in0 mm· —	21%	Clear	ESE 9 mph14 km/h
DayMostly clear and hot, with a high of 94°F35°C and morning low of 75°F24°C. Breezy from the ESE at 10 to 13 mph16 to 20 km/h. NightMostly clear, with a low around 77°F25°C. Breezy from the ESE at 7 to 8 mph11 to 12 km/h.
	MondayAug 3	95°F35°C	73°F23°C	0 in0 mm· —	16%	Hot	ESE 9 mph14 km/h
DayMostly clear and hot, with a high of 95°F35°C and morning low of 73°F23°C. Breezy from the ESE at 10 to 13 mph16 to 20 km/h. Heat risk in the afternoon. NightMostly clear, with a low around 75°F24°C. Breezy from the ESE at 7 to 8 mph12 to 13 km/h.
	TuesdayAug 4	95°F35°C	75°F24°C	0 in0 mm· —	28%	Clear	E 9 mph14 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 75°F24°C. Breezy from the ESE at 10 to 13 mph16 to 21 km/h. NightPartly cloudy, with a low around 77°F25°C. Breezy from the E at 7 to 8 mph12 to 13 km/h.
	WednesdayAug 5	95°F35°C	75°F24°C	0 in0 mm· —	34%	Hot	ESE 8 mph13 km/h
DayPartly cloudy and hot, with a high of 95°F35°C and morning low of 75°F24°C. Breezy from the ESE at 10 to 12 mph16 to 20 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 77°F25°C. Breezy from the E at 7 mph11 km/h.
	ThursdayAug 6	96°F36°C	76°F24°C	0 in0 mm· —	29%	Hot	ESE 8 mph13 km/h
DayMostly clear and hot, with a high of 96°F36°C and morning low of 76°F24°C. Breezy from the ESE at 9 to 12 mph15 to 20 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Breezy from the ESE at 6 to 7 mph10 to 11 km/h.
	FridayAug 7	96°F36°C	75°F24°C	0 in0 mm· —	22%	Hot	ESE 8 mph13 km/h
DayMostly clear and hot, with a high of 96°F36°C and morning low of 75°F24°C. Breezy from the ESE at 10 to 13 mph16 to 21 km/h. Heat risk in the afternoon. NightPartly cloudy, with a low around 78°F26°C. Breezy from the E at 6 to 7 mph10 to 11 km/h.

Nearby Cities

São Miguel do Tapuio20 mi32 km Campo Maior54 mi88 km Novo Oriente56 mi89 km Crateús62 mi99 km Pedro II62 mi100 km Altos65 mi105 km

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

Pattern	Example	Description
/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=11.5	Find 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: 5.3222°S, 41.5525°W·Elevation: 241m·Timezone: America/Fortaleza·Population: 19,288