Observatory Conditions

Rising Star Observing Area · Eastland County, TX · Bortle Class 2

Updated 02:40:53 UTC
Marginal — Conditions Acceptable

Humidity 88% — approaching No-Go threshold (90%). Monitor closely.

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Live Station View

RSOA - Weather Station 02:40:53 06/21/2026
Ambient:
79.3°F
Comfortable Sky Temp:
41.0°F
Overcast Dew Point:
74.9°F
Dry Wind Speed:
0.0 Mph
Calm Humidity:
88 %
Very Humid Moisture:
0 %
Dry Brightness:
5 %
Dark
Updated 02:40:53 Safe
TEMPERATURE
79.3°F
Dew point 74.9°F
HUMIDITY
88%
Very High
WIND
0.0 Mph
Calm
SKY
Clear
Dark SkyAlert-E IR sensor
SKY TEMP DELTA (cloud indicator)

-38.3°F  (more negative = clearer sky)

Source: SkyAlert-E IR sensor · reliable at night only

Cloud Forecast — Next 12 Hours

Clouds expected
03
04
05
06
07
08
09
10
11
12
13
14
⛈️
⛈️
⛈️ Thunderstorm

Clouds forecast to arrive around 5:00 AM — best imaging window in the next 2 hours.

Source: Open-Meteo (ECMWF model) · updated every 15 min

Astronomical Conditions Forecast

SEEING
04
07
10
13
16
19
22
01
TRANSPARENCY
04
07
10
13
16
19
22
01
SEEING NOW

Very Good

0.75–1.0"
TRANSPARENCY NOW

Good

STABILITY

Slightly Unstable

Lifted index -1
Source: 7Timer (GFS model) · 3-hour intervals · updated every 6 hours

NWS Station Observations

KBWD — Brownwood Regional (22.7 mi) 2:15 AM
Temp

75.2°F

Dew Point

73.4°F

Wind

5.8 mph

Sky

Clear

Visibility

9 mi

KBWD 210715Z AUTO 16005KT 9SM CLR 24/23 A2985 RMK AO2 T02400230 $
KABI — Abilene Regional (39.9 mi) 2:15 AM
Temp

77.0°F

Wind

12.7 mph

Sky

Clear

Visibility

9 mi

Source: NWS api.weather.gov · NWS Fort Worth (FWD) · no API key required

Clear Dark Sky Forecast

Clear Dark Sky forecast for RSOA
Click chart to open full Clear Dark Sky forecast

Satellite Imagery

Regional (100 mi radius) Observatory Site

Moon & Solar

MOON PHASE

First Quarter

42% illuminated
MOON RISE / SET

6:31 PM / 6:08 AM

ASTRONOMICAL TWILIGHT

9:49 AM

until 3:25 AM
NEXT NEW MOON

Jul 14

Full: Jun 29

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