🇧🇷 Weather in Viamão
Map Overlays:
Hourly Forecast for Viamão
23:00
18°
43%
00:00
18°
43%
01:00
18°
43%
02:00
17°
46%
03:00
17°
45%
04:00
17°
44%
05:00
17°
47%
06:00
17°
43%
07:00
17°
44%
08:00
17°
44%
09:00
17°
39%
10:00
18°
38%
11:00
19°
24%
12:00
20°
17%
13:00
22°
25%
14:00
22°
21%
15:00
22°
51%
16:00
20°
80%
17:00
19°
81%
18:00
19°
85%
19:00
18°
77%
20:00
18°
50%
21:00
18°
62%
22:00
18°
70%
14-Day Forecast for Viamão
2026-07-26
Sunny
20° /
15°
2026-07-27
Fog
22° /
17°
2026-07-28
Light rain shower
20° /
17°
2026-07-29
Patchy rain nearby
18° /
16°
2026-07-30
Patchy rain nearby
20° /
15°
2026-07-31
Sunny
25° /
15°
2026-08-01
Sunny
21° /
17°
Additional Forecasts for Viamão
Air Quality
💨 US EPA Index 2 (Moderate)
CO (Carbon Monoxide) 166.0 μg/m³
O₃ (Ozone) 48.0 μg/m³
NO₂ (Nitrogen Dioxide) 14.0 μg/m³
SO₂ (Sulphur Dioxide) 6.0 μg/m³
PM2.5 (Fine particles) 18.1 μg/m³
PM10 (Coarse particles) 18.3 μg/m³
Historical Weather
Weather Forecasts for Other Cities in Brazil
Weather in Viamão — FAQ
Answers refreshed each request based on current conditions in Viamão.
What is the weather like right now in Viamão?
Right now in Viamão, Brazil the temperature is 18.0°C (feels like 13.7°C), with fog. Relative humidity is 99% and wind is 3.6 km/h.
What is today's high and low temperature in Viamão?
Today's forecast high in Viamão is 20.3°C and the overnight low is 14.9°C. The diurnal range — high minus low — depends on cloud cover; clear days swing more than overcast ones.
Will it rain in Viamão today?
The chance of precipitation in Viamão today is 80%. Forecast accuracy is highest within the next 6 hours and decreases steadily out to 14 days.
How often does the weather here update?
Current observations refresh every 15-60 minutes from the nearest monitoring stations operated by national meteorological agencies. The hourly forecast updates approximately every hour; the 7- and 14-day outlook is recomputed several times per day.
What does 'feels like' temperature mean?
Feels-like (apparent) temperature accounts for humidity, wind chill and direct sunshine — variables that change how the human body perceives heat or cold. On hot, humid days it can be 3-7°C above the actual reading; on cold windy days it can be 5-15°C below.
Why does the temperature in Viamão differ from nearby cities?
Even short distances can change temperatures noticeably. Viamão's reading reflects altitude, proximity to large bodies of water, urban heat island effects, and the exact location of the monitoring stations supplying the data. Coastal cities are typically milder and more humid than inland equivalents.