Hottest day
27ºC
Saturday, 10/31
My city
No official warning is active for this municipality right now. That does not guarantee everything is fine: see the rest of the page.
21º15º
Today: high / lowno rain forecast today
Official warnings
No official warning is active for this municipality right now. Warnings for the whole country are in the Storms and alerts section.
Week highlights
Air now in Petrópolis: IQAr 22 (good).
Hottest day
27ºC
Saturday, 10/31
Coldest night
15ºC
Wednesday, 10/28
Rainiest day
16.2mm
Friday, 10/30
45.4 mm in total this week
Strongest wind gust
34km/h
Tuesday, 11/03
Highest UV
8.4very high
Thursday, 10/29
Each bar runs from the day's low to its high and the colour follows the temperature.
| Day | Rain | High | Low | UV | Gust | IQAr |
|---|---|---|---|---|---|---|
| Wed, 10/28 | 0.3 mm | 21 ºC | 15 ºC | 6.3 | 28 km/h | 27 |
| Thu, 10/29 | 9.3 mm | 23 ºC | 16 ºC | 8.4 | 26 km/h | 30 |
| Fri, 10/30 | 16.2 mm | 21 ºC | 18 ºC | 3.1 | 28 km/h | 30 |
| Sat, 10/31 | 2.5 mm | 27 ºC | 19 ºC | 6.6 | 27 km/h | 69 |
| Sun, 11/01 | 4.1 mm | 27 ºC | 19 ºC | 6.5 | 28 km/h | 88 |
| Mon, 11/02 | 4 mm | 26 ºC | 19 ºC | 7.5 | 28 km/h | – |
| Tue, 11/03 | 9 mm | 26 ºC | 20 ºC | 6.9 | 34 km/h | – |
Source: Open-Meteo.com (forecast and CAMS model air quality).
Hour-by-hour rain
The next 24 hours, Brasília time. Each column is a full hour and its height is the rain forecast for it.
Recent rain
The last 30 days, up to October 27. Each column is a day and its height is that day's rain; in orange, days with 50 mm or more.
Rain in October, up to 10/27
188.5mm
The normal rain for this month is not available for this city yet.
Rivers nearby
Paraíba do Sul · 29 km away
Level now: 1.72 m · Alert
Guapiaçu · 37 km away
Level now: 0.91 m · No reference
Paraíbuna · 53 km away
Level now: 1.06 m · High
Source: ANA (telemetry); SGB reference levels where they exist. The level is compared with the station's own at this time of year.
Fire, rain and drought
No likely hotspot within 50 km in the last 24 h.
CEMADEN rain gauges within 30 km: the highest 24 h total was 18.4 mm (39 stations with data).
On the official September 2026 map, Petrópolis is in the monitored area with no drought.
Sources: INPE and NASA FIRMS (fire), CEMADEN (rain), ANA Drought Monitor.
In an emergency, follow Civil Defense: 199. Fire Department: 193. SAMU: 192.
Dashed: the month's average (1991–2020)Rain (mm)
Thu 15:00 to Fri 17:00
25.3 mm over the period, at most 2.1 mm in one hour · 100% chance
Source: Open-Meteo.com. Model forecast, updated every 3 hours: the timing may change.
Most rain in one day
26.2mm
26.2 mm on August 27, in the last 90 days
Days in a row without rain
It rained on the latest day with data.
Source: Open-Meteo.com, ERA5 reanalysis (a model, not a rain gauge); the latest day may be corrected later. A day without rain: under 1 mm.