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Karaj weather

Alborz Province · 1,448,075 inhabitants · Thursday, October 29 · updated 20:22

Air: Poor

18°

Partly cloudy

Feels like 18°C

Wind

9 km/h

Gusts

19 km/h

Humidity

30 %

Pressure

1018 hPa

Clouds

55 %

Storm

Rise 06:25 Set 17:14 Day 10 h 48 min UV 4 · Moderate

Morning, afternoon, evening

Trend

Evening

Rain showers

15°13°

Feels like 15°

Wind ↑ E 4 km/h

Humidity 48 %

💧 1.0 mm

21:00

13°

0.6mm

W 4

00:00

12°

0.3mm

NNW 2

Karaj forecast in charts · next 7 days

The week ahead: highs and lows

▲ This week runs +3.7° warmer than usual

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

Karaj climate: what a normal year looks like

The hottest stretch is July, when afternoons average 33 °C; the coldest is January, when nights average −5 °C. Between those two months the average temperature changes by 28 °C.

A normal year brings roughly 360 mm of rain — less than 92% of the towns of 20,000+ people we compared it with.

Nights typically freeze from December to February, the coldest averaging −5 °C in January.

From June to September, rain is scarce: under 10 mm a month on average.

Forecast highs for the coming week average 19 °C, 1 °C cooler than a normal October (20 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
Jan	3 °C	−5 °C	44 mm
Feb	5 °C	−3 °C	50 mm
Mar	10 °C	1 °C	59 mm
Apr	16 °C	7 °C	51 mm
May	22 °C	12 °C	24 mm
Jun	30 °C	18 °C	7 mm
Jul	33 °C	21 °C	5 mm
Aug	32 °C	20 °C	4 mm
Sep	28 °C	15 °C	4 mm
Oct	20 °C	10 °C	22 mm
Nov	11 °C	2 °C	42 mm
Dec	5 °C	−3 °C	44 mm
Whole year	18 °C	8 °C	360 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 35.83° N, 50.99° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in Karaj: pollution and pollen

4/6

Poor

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.536µg/m³

PM1039µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Karaj

Rain observed over the last two hours by official weather radars around Karaj, followed by the radar forecast for the next hour where the weather service provides one.

Rain radar Last two hours, then forecast where available · drag the timeline

No open weather radar covers Karaj yet: the map shows our hour-by-hour rain forecast (ICON, GFS).

Moon over Karaj

Waning gibbous

87 % illuminated · 18.3 days

Rise 00:20 Set 16:11

Fri 30/10 79%

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Moonrise and moonset in local time (Asia/Tehran); phase and lit fraction from a synodic calculation.

Look up a past day in Karaj

Curious about the weather in Karaj on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Karaj weather at a glance

This page gathers everything about the weather in Karaj, Alborz Province: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “partly cloudy”, it is 18 °C (feels like 18 °C) and the wind blows at 9 km/h.

Expected range today: 12 °C to 18 °C and around 1 mm of rain. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Karaj weather data for developers

Use the Karaj forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

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Where does this forecast come from? Our engine, checked every day against 1125 weather stations