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: 599m

Mosfellsbær Biosphere Reserve

Monday, September 28, 2026

5°C
Dense DrizzleFeels like 1°
H: 6°•L: 5°•Rain: 100%
Meteorological Synthesis

Dense Drizzle with highs near 6°C.

Precipitation expected over the coming days with variable skies.

Wind
16.9 km/h
Humidity
91%
UV Index
0.15 / 11
Pressure
1001 hPa

24-Hour Forecast & Meteogram

24 Hours Ahead
5°
70%
17k
14:00
5°
65%
16k
15:00
5°
53%
10k
16:00
5°
53%
10k
17:00
5°
50%
15k
18:00
5°
40%
17k
19:00
5°
48%
15k
20:00
5°
40%
14k
21:00
5°
28%
14k
22:00
6°
18%
14k
23:00
6°
8%
14k
00:00
6°
5%
15k
01:00
6°
0%
15k
02:00
6°
0%
15k
03:00
6°
3%
14k
04:00
6°
0%
13k
05:00
6°
0%
13k
06:00
6°
0%
15k
07:00
7°
8%
16k
08:00
7°
38%
16k
09:00
7°
78%
18k
10:00
7°
88%
21k
11:00
7°
85%
20k
12:00
8°
80%
16k
13:00

Air Quality (AQI)

Fair
24EAQI Index

Sensitive individuals should limit prolonged outdoor exertion.

PM2.5
2.4 µg/m³
PM10
7.9 µg/m³
NO₂
0.1 µg/m³

UV Index

Max 0.2
0.15/ 11 (Moderate)

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

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

Wind

10m AGL
16.9km/h

Gusts up to 36.4 km/h.

Direction: 359°
Gentle Breeze

Solar Cycle

Daylight: 12h
Sunrise
07:17
Sunset
18:54
Twilight and solar zenith calculated based on WGS84 geographic coordinate telemetry.

Pressure

Stable High
1001hPa (MSL)
Surface Pressure1001 hPa
Cloud Cover99%

Humidity & Moisture

RH Ratio
91%
Current Rain0.2 mm
24h Rain Accumulation22.5 mm

14-Day Detailed Outlook

14-Day Deterministic Model
Today
Sep 28
100%
5°
6°
Tomorrow
Sep 29
88%
6°
9°
Wed
Sep 30
39%
10°
11°
Thu
Oct 1
13%
9°
11°
Fri
Oct 2
23%
7°
9°
Sat
Oct 3
23%
5°
7°
Sun
Oct 4
64%
5°
7°
Mon
Oct 5
55%
5°
7°
Tue
Oct 6
45%
4°
5°
Wed
Oct 7
45%
4°
4°
Thu
Oct 8
42%
4°
7°
Fri
Oct 9
43%
6°
7°
Sat
Oct 10
37%
5°
8°
Sun
Oct 11
38%
5°
7°

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 Biosphere Reserve
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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