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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
45
Female Safety
40
LGBTQ+ Safety
30
Traffic Safety
50
Food Safety
60
Monthly Cost
$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 neighborhoodsFrequently Asked Questions
Data sources
Source-backed data
NASA POWER - Climate normals and monthly weather measurements rendered as city weather metrics. Updated 2026-03-22.
World Air Quality Index - Latest available city-level air quality station measurement. Updated 2025-12-05.
Ookla Open Data - Internet speed aggregates for 2024Q3 from 10 tests. Updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Updated 2025-12-06.
Oyster List city price model - City price estimates calibrated from local price surveys and jurisdiction-level cost signals. Updated 2026-01-14.
Estimated data
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores are model-assisted estimates derived from source-backed country and city signals. Confidence 36/100.
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