Official Meteorological TelemetryMeteoAlarm Advisory

MeteoAlarm Advisory: Heavy Precipitation Ahead

Significant moisture corridor approaching. Probability of localized street runoff and reduced visibility on transit corridors.

Iceland•Capital & Coast•Elev: 479m

Mosfellsbær

Sunday, September 27, 2026

3°C
FoggyFeels like 1°
H: 4°•L: 2°•Rain: 100%
Meteorological Synthesis

Foggy with highs near 4°C.

Precipitation expected over the coming days with variable skies.

Wind
6 km/h
Humidity
99%
UV Index
0.1 / 11
Pressure
925 hPa

24-Hour Forecast & Meteogram

24 Hours Ahead
3°
0%
6k
17:00
3°
5%
7k
18:00
3°
10%
6k
19:00
3°
28%
6k
20:00
3°
28%
6k
21:00
3°
38%
4k
22:00
3°
35%
4k
23:00
3°
60%
3k
00:00
3°
75%
7k
01:00
3°
83%
8k
02:00
3°
90%
11k
03:00
2°
98%
12k
04:00
2°
93%
13k
05:00
2°
93%
11k
06:00
1°
93%
10k
07:00
1°
90%
8k
08:00
1°
88%
8k
09:00
1°
85%
5k
10:00
2°
85%
5k
11:00
2°
78%
5k
12:00
2°
75%
7k
13:00
2°
83%
7k
14:00
2°
75%
6k
15:00
2°
73%
7k
16:00

Air Quality (AQI)

Good
16EAQI Index

Air quality is considered satisfactory, and air pollution poses little or no risk.

PM2.5
1.6 µg/m³
PM10
2.5 µg/m³
NO₂
0.6 µg/m³

UV Index

Max 1.2
0.1/ 11 (Moderate)

Low to moderate exposure. Sunglasses recommended during peak afternoon hours.

0 (Low)6 (High)11+ (Extreme)

Wind

10m AGL
6km/h

Gusts up to 17.6 km/h.

Direction: 73°
Gentle Breeze

Solar Cycle

Daylight: 12h
Sunrise
07:13
Sunset
18:57
Twilight and solar zenith calculated based on WGS84 geographic coordinate telemetry.

Pressure

Stable High
990hPa (MSL)
Surface Pressure925 hPa
Cloud Cover92%

Humidity & Moisture

RH Ratio
99%
Current Rain0 mm
24h Rain Accumulation5.6 mm

14-Day Detailed Outlook

14-Day Deterministic Model
Today
Sep 27
100%
2°
4°
Tomorrow
Sep 28
98%
1°
3°
Tue
Sep 29
69%
1°
6°
Wed
Sep 30
50%
7°
9°
Thu
Oct 1
-
6°
8°
Fri
Oct 2
13%
3°
7°
Sat
Oct 3
15%
1°
5°
Sun
Oct 4
36%
2°
8°
Mon
Oct 5
43%
5°
10°
Tue
Oct 6
39%
4°
9°
Wed
Oct 7
35%
7°
9°
Thu
Oct 8
39%
4°
7°
Fri
Oct 9
41%
3°
4°
Sat
Oct 10
42%
2°
5°

Live Weather Radar — Pan-European Doppler Radar

Past -60m•Now•+120m Outlook

Live Ground-Truth Observation Feed

Peer-verified reports logged by spotters and automated PWS stations across Europe

Real-time Ingestion
Log Local Ground ConditionStep 1 of 2: Select condition
Mosfellsbær
Ground Temp:°C

Observations undergo peer verification by regional spotters and enrich city telemetry.

Filter:
6 reports
S
Stefan MüllerAlpine Master SpotterAlps
Garmisch-Partenkirchen, Germany•Recent
15°C•Partly Cloudy

“Crisp morning air around Zugspitze valley station, golden sun breaking through light morning mountain mist. Zero wind, visibility > 35km.”

Ground-Truth Telemetry
C
Chloé DuboisCoastal Maritime SpotterAtlantic
Le Havre, France•Recent
14°C•Rain / Showers

“Fresh Atlantic westerly gale picking up, moderate sea swell (2.2m). Light intermittent drizzle across the harbor piers.”

Ground-Truth Telemetry
D
Dr. Alessandro RivaHigh Alpine ObserverAlps
Cortina d’Ampezzo, Italy•Recent
9°C•Clear Sky

“First seasonal frost dusting on peaks above 2,600m. Crisp alpine sky with cirrus uncinus approaching from the west.”

Ground-Truth Telemetry
M
Matteo RossiMediterranean SpotterMediterranean
Rome, Italy•Recent
22°C•Clear Sky

“Warm evening breeze across Piazza Navona. Pleasant 22°C with dry conditions and comfortable humidity around 48%.”

Ground-Truth Telemetry
E
Emre KayaBosporus Weather StationMediterranean
Istanbul, Turkey•Recent
21°C•Partly Cloudy

“Bosphorus breeze is cool and refreshing from the Black Sea. Crystal blue sky with passing white cumulus clouds at 1,200m.”

Ground-Truth Telemetry
A
Astrid LindholmFjord Atmospheric LabNordic
Bergen, Norway•Recent
11°C•Dense Fog

“Low scud clouds drifting over Mount Fløyen. Typical Atlantic marine layer with fine mist and 98% relative humidity.”

Ground-Truth Telemetry

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