United States · elevation 698 ft AMSL
· 40.9479, -87.1826
Jasper County Airport (Rensselaer) is an airport with the ICAO code KRZL and the IATA code RNZ. Country: United States. Nearest settlement listed in the database: Rensselaer. OurAirports classifies it as a small airport. Its ICAO code starts with the KR prefix, which marks airports in United States. The four-letter code KRZL is used in flight operations and weather reports, while the three-letter IATA code RNZ is used for ticketing and baggage handling. The airport reference point sits at 40°56'52"N, 87°10'57"W, at an elevation of 698 ft (213 m) above sea level. The applicable time zone is America/Chicago.
Aerial imagery showing the runway and apron layout - the zoom is matched to the longest runway.
| Threshold | Course | Length | Width | Surface |
|---|---|---|---|---|
| 09 | 90° | 442 m (1,450 ft) | 46 m (150 ft) | grass |
| 27 | 270° | |||
| 18 | 180° | 1,219 m (4,000 ft) | 18 m (60 ft) | asphalt |
| 36 | 360° |
The course is derived from the runway designator (number × 10), not from a survey - the actual magnetic bearing can differ by a few degrees.
Declared distances (TORA, TODA, ASDA, LDA) are published in the national AIP - they are not part of this table.
What the METAR reports from KRZL for 2023-2025 show - counted hour by hour.
We computed these statistics from 26,092 METAR reports issued by KRZL in 2023-2025. VFR conditions prevailed 76% of the time, MVFR 15% and IFR or LIFR 9%. Best month for VFR flying: October (88% of hours VFR). Most IFR and LIFR hours: January (22%).
Through the day, IFR or LIFR conditions are most frequent around 11:00 UTC (15% of reports at that hour) and least frequent around 00:00 UTC (5%).
Fog (FG) was reported on 21 days a year on average, most often in July. Thunderstorms (TS) occurred on 18 days a year on average, and snowfall on 27.
The wind most often blows from W (270°) - 10% of reports. Calm (0 kt) made up 16% of reports, and gusts of 25 kt or more appeared in 3%. Warmest month: June (average high 28.1 °C); coldest: January (average low -5.5 °C).
Day counts are for the selected period (for all years - the yearly average).
The top of each bar is the average daily high, the bottom the average daily low (usually around dawn), in °C.
Most often: W - 10% of reports. Each petal shows the direction the wind blows from (as in METAR) - the longer it is, the more often. Colour shows wind speed.
| Month | Avg high °C | Avg low °C | VFR | IFR/LIFR | Fog days | Thunderstorm days | Snow days |
|---|---|---|---|---|---|---|---|
| January | 0.7 | -5.5 | 46% | 22% | 3 | 0 | 11 |
| February | 6.0 | -3.2 | 75% | 9% | 2 | 0.3 | 3.3 |
| March | 11.8 | 1.1 | 73% | 10% | 0.7 | 2.7 | 3 |
| April | 17.1 | 5.2 | 83% | 5% | 0.3 | 2.4 | 0.7 |
| May | 23.1 | 10.8 | 87% | 5% | 1 | 2.7 | 0 |
| June | 28.1 | 16.0 | 85% | 5% | 0.3 | 3 | 0 |
| July | 28.0 | 17.1 | 81% | 7% | 3.3 | 2.7 | 0 |
| August | 26.2 | 15.5 | 86% | 5% | 3.3 | 2.3 | 0 |
| September | 25.2 | 12.2 | 85% | 6% | 1.7 | 1.3 | 0 |
| October | 19.4 | 7.3 | 88% | 4% | 1 | 0.7 | 0.3 |
| November | 10.5 | 1.6 | 71% | 10% | 1.7 | 0 | 2.7 |
| December | 4.3 | -2.8 | 52% | 19% | 3 | 0.3 | 6 |
Temperatures are averages of daily highs and lows. Day counts are the average per month over the period.
According to OurAirports data (compiled from AIP and FAA sources), Jasper County Airport (Rensselaer) has 2 runways: 09/27 - 442 m long (1,450 ft), 46 m wide, grass surface; 18/36 - 1,219 m long (4,000 ft), 18 m wide, asphalt surface.
The longest of them is 18/36, at 1,219 m.
The airport combines paved and grass surfaces: 1 paved and 1 grass runway each.
The thresholds are oriented as follows: 09/27 on 90° and 270° magnetic, 18/36 on 180° and 360° magnetic. A threshold designator is its magnetic heading divided by ten (ICAO Annex 14), so the runway axis can be read straight off the numbers.
For the 09/27 axis, wind from the south (around 180°) or from the north (around 360°) blows perpendicular to the runway and produces the largest crosswind component. Wind from around 90° or 270° acts along the runway, as a headwind or a tailwind. The decoder on this page computes those components automatically from the current METAR.
Weather reports for Jasper County Airport (Rensselaer) are published under the ICAO code KRZL. A METAR is an observation of current conditions, usually issued every 30 or 60 minutes; a TAF is a forecast for the airport area, typically covering 9 to 30 hours.
The decoder breaks the KRZL report down into its parts: wind direction and speed including gusts and variability, visibility (including CAVOK and directional minimum visibility), weather phenomena by WMO code, cloud layers with their bases, temperature and dew point, QNH pressure, and the resulting flight category - VFR, MVFR, IFR or LIFR - using FAA thresholds.
Not every airport issues its own reports; many smaller airfields have no weather station. If no current data is available for KRZL, check the nearby airports listed below.
Reports always use UTC (the Z suffix). The America/Chicago zone is GMT-06:00 in winter and GMT-05:00 in summer - that is the shift to apply to the time in the report to get local time at the airport.
The closest airports in the database, measured in a straight line from the reference point, are White County Airport (Monticello) (KMCX, 44 km), Arens Field (Winamac) (KRWN, 50 km), Greater Kankakee Airport (KIKK, 57 km). When no report is available for KRZL, they usually give the best approximation of conditions in the area.
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The METAR archive for KRZL goes back to 23/05/2011. Pick a date and see every observation from that day.
Run a flying club, a training organisation or an airfield website? Embed a ready-made panel with the current KRZL METAR - flight category, wind, visibility, temperature and pressure, refreshed automatically. The configurator lets you pick language, theme and units; you paste the code once.
