União
Região Geográfica Intermediária de Teresina, Piauí, Brazil
Current Weather
38°100°
Partly Cloudy
Feels Like: 41°106°
Min: 26°78°
Max: 38°101°
The next few hours will be partly cloudy, with today reaching 38°C and dropping to 25°C. The coming days will be mostly clear throughout the day.
Hourly Forecast
Want a closer look at the weather?
Premium adds minute-by-minute rain timing, yesterday comparisons, and more detail across Airpult.
Air Quality
Air quality is satisfactory, and air pollution poses little or no risk.
Daylight Hours
05:30
Sunrise
17:39
Sunset
Moon
17:17
Moonrise
04:42
Moonset
Daily Forecast
Today
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Resources
UV Index
Humidity
Looking at the night sky?
See moon phases, eclipses, and seasons for this year.
View astronomyCurrent stargazing conditions?
See sky darkness, moon phase, and the best viewing window for União.
View stargazing scoreWeather in União today, October 25, 2026
União starts October 25, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.União starts October 25, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans.
The day peaks near 38°C and cools toward 26°C. Relative humidity sits between 31% and 69%, reaching its peak around 23:00. Winds stay light, near 22 km/h by 21:00, so the day feels still more than breezy.The day peaks near 101°F and cools toward 78°F. Relative humidity sits between 31% and 69%, reaching its peak around 23:00. Winds stay light, near 13 mph by 21:00, so the day feels still more than breezy.
The second half of the day still looks unsettled, with rain probability around 38% by 13:00. Dense cloud near 72% at 23:00 keeps the feel grey. Views remain open at about 16.1 km. Sunrise is at 05:30 and sunset at 17:39, giving 12 hours 8 minutes of sunlight today.The second half of the day still looks unsettled, with rain probability around 38% by 13:00. Dense cloud near 72% at 23:00 keeps the feel grey. Views remain open at about 10 mi. Sunrise is at 05:30 and sunset at 17:39, giving 12 hours 8 minutes of sunlight today.
In short, treat October 25, 2026 in União as a damp day: pack covers, watch the wetter hours, and expect a high near 38°C.In short, treat October 25, 2026 in União as a damp day: pack covers, watch the wetter hours, and expect a high near 101°F.
Frequently asked questions about weather in União
How warm does it get in União?
The warmest month in União is October, with average high temperatures of 37°C. The average temperature during this period is around 31°C.The warmest month in União is October, with average high temperatures of 99°F. The average temperature during this period is around 87°F.
How cold does it get in União?
The coldest month in União is July, with average low temperatures of 23°C. The average temperature during this period is around 28°C.The coldest month in União is July, with average low temperatures of 73°F. The average temperature during this period is around 82°F.
What is the wettest time of year in União?
The wettest month in União is March, with an average of 408 mm of precipitation.The wettest month in União is March, with an average of 16 in of precipitation.
What is the driest time of year in União?
The driest month in União is September, with an average of 1 mm of precipitation.The driest month in União is September, with an average of 0 in of precipitation.