March Air Reserve Base

KRIV / RIV

Riverside, US

Last Updated
Mar 4, 05:55Z

Current Weather

Display Units
Recent 52 min ago
05:55Z

☀️ Day
VFR
Flight Rules
11°C
Temperature
Dewpoint: 8°C
0 kt
10 SM
Visibility
Ceiling
Unlimited
1016 hPa
QNH
Altimeter Setting

Raw METAR

METAR KRIV 040555Z AUTO 00000KT 10SM CLR 11/08 A3000 RMK AO2 SLP154 T01080077 10235 20105 50007
QNH
1016 hPa
Sea Level Pressure
For altitude above MSL
QFE
965 hPa
Field Pressure
Height above aerodrome (1,536 ft)
Pressure Alt
1,454 ft
QNE Reference
Standard: 1013 hPa
Density Altitude: 1,343 ft
ISA Deviation: -0.9°C

Forecast (TAF)

View Full TAF
Raw TAF
TAF KRIV 040404Z 0404/0510 VRB04KT 9999 SCT300 QNH2998INS BECMG 0411/0412 14004KT 8000 BR FEW300 QNH2998INS BECMG 0414/0415 VRB04KT 9999 NSW FEW300 QNH3000INS BECMG 0419/0420 32009KT 9999 FEW300 QNH2992INS WND 270V350 TEMPO 0421/0502 31012G20KT BECMG 0502/0503 VRB04KT 9999 SCT300 QNH2990INS BECMG 0508/0509 15004KT 3200 BR OVC004 510606 QNH2989INS TX25/0422Z TN04/0414Z
Upcoming Changes (Next 12 Hours)
06:47Z BASE
+0h
VFR VRB 4 kt
Visibility: 10+ km
11:00Z BECMG
+5h
MVFR 140° 4 kt
Visibility: 8 km
Mist
14:00Z BECMG
+8h
VFR VRB 4 kt
Visibility: 10+ km

24-Hour Weather Evolution

Loading weather data...
Data Sources
  • • Current conditions from METAR observations
  • • Historical data from past 24 hours
  • • No forecast or predicted data included
  • • Data updated with each new METAR report
Chart Features
  • • Hover for exact values and timestamps
  • • Click legend items to toggle data series
  • • Zoom and pan for detailed analysis
  • • Units automatically converted to preferences
Note: Future values beyond current TAF validity are estimates based on climatological data and trends. Always verify with current forecasts before flight operations.

Airport Runway Layout

N
RIV
12
30
14
32

Runway Information

Runway Length Width Surface Heading Wind Component
12/30 3,010 ft 100 ft ASP 135°
0.0 kt 0.0 kt
135° angle
14/32 13,300 ft 200 ft CON 149°
0.0 kt 0.0 kt
149° angle
🟢 Active Runway: Best headwind component for current conditions
⬆️ Headwind: Favorable wind component
↔️ Crosswind: ≤10kt Safe, 11-15kt Caution, >15kt Challenging

Weather Statistics - KRIV

4,832 observations | Sep 2025 - Mar 2026

Flight Rules Distribution

VFR
79.9%
MVFR
14.3%
IFR
3.4%
LIFR
2.4%

March Air Reserve Base typically experiences VFR conditions 79.9% of the time, though instrument-rated pilots will find IFR weather present approximately 5.8% of observations. Prevailing winds are from the NW averaging 6.2 knots. Calm conditions occur 45.2% of the time. Temperature extremes range from -1°C to 37°C, reflecting significant seasonal variation. The best months for VFR flying are March, October, December.

Wind Analysis

Prevailing Direction: NW (315°)
Average Speed: 6.2 kt
Maximum Recorded: 24 kt
Calm Winds: 45.2%
Direction Distribution:
N
5.8%
NE
2.8%
E
6.6%
SE
11.4%
S
7.7%
SW
1%
W
4.6%
NW
15%

Temperature Range

Average: 15.2°C
Range: -1°C to 37°C
-1°C 37°C

Visibility

Average: 9.5 SM
Below 3 SM: 1.1%
Fog Frequency: 2.2%

Best Months for VFR

March October December

Runway Wind Analysis

Runway 12/30
Favorable wind: 100%
Avg crosswind: 2.8 kt
Runway 14/32
Favorable wind: 100%
Avg crosswind: 2.5 kt

Statistics computed from 4,832 METAR observations (Sep 2025 - Mar 2026). Data sourced from official aviation weather services. Updated daily.

March Air Reserve Base - Airport Information

Airport Details

ICAO Code: KRIV
IATA Code: RIV
Type: medium airport
Status: active
Elevation: 1,536 ft MSL

Location

City: Riverside
Country: US
Latitude: 33.880699°
Longitude: -117.259003°
Time Zone: Etc/GMT+8

Runway Information

Runway 12/30
Length: 3,010 ft
Width: 100 ft
Surface: ASP
ILS: No
Runway 14/32
Length: 13,300 ft
Width: 200 ft
Surface: CON
ILS: No

About March Air Reserve Base

Overview

March Air Reserve Base (KRIV) is a medium airport located in Riverside, California, serving as an important military aviation facility. Situated at an elevation of 1,536 feet MSL with coordinates 33.880699, -117.259003, the base supports air reserve operations with two significant runways. Its strategic location in Southern California provides a critical infrastructure for military aviation activities.

Flying Conditions

The airport experiences predominantly VFR conditions, with 78.9% of observations indicating clear flying weather. Temperature ranges from 2°C to 37°C, creating moderate climate variability for pilots. Wind patterns are consistently from the northwest at an average of 6.1 knots, with calm conditions occurring 44.6% of the time. October, November, and December represent the most favorable VFR months for aviation operations.

Notable Features

March Air Reserve Base features two runways: a 3,010-foot asphalt runway (12/30) and a substantial 13,300-foot concrete runway (14/32). Both runways demonstrate excellent wind alignment, with 100% favorable wind conditions and minimal average crosswind (2.7kt and 2.4kt respectively). The airport's elevation and geographic positioning contribute to generally stable atmospheric conditions.

Approach Considerations

Pilots can expect consistent visibility averaging 9.4 statute miles, with infrequent low visibility events (below 3SM occurring only 1.2% of observations). The northwest prevailing winds suggest potential preference for runways aligned in that directional quadrant. Careful attention should be paid during the rare instances of reduced visibility, which occur in approximately 2.3% of observations.

Data Sources & Accuracy: Airport information sourced from OurAirports.com, a collaborative database of worldwide airport data. Weather data from official aviation weather services including NOAA Aviation Weather Center and international METAR/TAF providers. Information is updated regularly but pilots should always verify current conditions and NOTAMs through official channels before flight operations.

Official Data Sources

Weather NOAA Aviation Weather Center • International METAR/TAF Network
Airports OurAirports.com • Public domain airport database
NOTAMs FAA NOTAM System • ICAO NOTAM Distribution
Last updated: Jan 1, 1970 12:00 AM UTC

Disclaimer: Data is provided for informational purposes only. Pilots must verify all information through official sources before flight operations. Weather conditions change rapidly; always obtain a current briefing from approved weather services.