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União
City in Piauí, Brazil
Overview
União is a welcoming mid-sized city located in Piauí, Brazil, known for its traditional festivals, local culture, and proximity to natural attractions. Rich in history and featuring a laid-back atmosphere, União is ideal for travelers seeking an authentic Brazilian experience away from the major tourist routes.
Geographic Context
Jurisdiction
Brazil
State
Piauí
Population
47,896
Time Zone
America/Sao_Paulo
Coordinates
-4.60°, -42.86°
Key Metrics
Safety Score · estimate
45
Female Safety
40
LGBTQ+ Safety
30
Traffic Safety
50
Food Safety
60
Monthly Cost · estimate
$658
Local Cost
$358
Local Income
$270
Cashless
28
English
16
Temperature
27.6°C
Summer Avg
27.4°C
Winter Avg
27.0°C
Record High
40.5°C
Record Low
17.5°C
Humidity
71%
Precipitation
1340 mm
Internet Speed
312 Mbps
Upload
275 Mbps
Latency
2 ms
City Vibrancy
6
Coworking
0
Cafes
0
Nightlife
0
Parks
6
Explore
Neighborhoods
EstimatedNeighborhood highlights with vibe, safety, and cost profiles.
View featured neighborhoodsData sources
Source-backed data
World Air Quality Index - Latest available city-level air quality station measurement. Record updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Record updated 2025-12-06.
Estimates and unverified origins
Oyster List climate data - Climate origins are unverified. Available methods include historical APIs and AI estimates; stored rows do not identify the original dataset, reference period, or model for each value. Treat these summaries as estimates until independently verified. Record updated 2026-03-22.
Oyster List city price estimates - Price origins are unverified. Available generation methods include AI estimates; stored records do not identify a survey, observation period, or model for each price. Record updated 2026-01-14.
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores include model-assisted estimates. Stored records do not identify supporting observations for each score. Model-reported confidence: 36/100; this is not a measured accuracy score. Model: derived+gpt-4.1. Record updated 2026-03-26.
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