Heat Advisory — Lower Yampa River Basin, CO, Grand Valley, CO, Southeast Utah, UT, Eastern Uinta Basin, UT, Arches/Grand Flat, UT, Canyonlands/Natural Bridges, UT 7:00 AM

Grand Valley, Canada

Last updated: 3:03 AM CDT  ·  Refresh
15°C
Feels like 16°
Fog
▲ 27°  /  ▼ 16°
Wind
2 mph W
Humidity
93%
Dew Point
14°
Pressure
28.23 inHg
Visibility
0 mi
UV Index
0.0
Cloud Cover
76%
Sunrise
6:04 AM
Sunset
8:50 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Grand Valley is currently fog at 15°C. Precipitation is likely — peak probability 77% around 4 AM. Atmospheric instability is elevated (CAPE up to 1609 J/kg) — isolated convective development possible. Sunrise: 6:04AM · Sunset: 8:50PM.

Alerts

Heat Advisory
Lower Yampa River Basin, CO, Grand Valley, CO, Southeast Utah, UT, Eastern Uinta Basin, UT, Arches/Grand Flat, UT, Canyonlands/Natural Bridges, UT
Expires 7:00 AM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
15°
8%
5 AM
14°
10%
6 AM
13°
12%
7 AM
13°
13%
8 AM
16°
29%
9 AM
17°
42%
10 AM
21°
37%
11 AM
22°
32%
12 PM
24°
44%
1 PM
24°
44%
2 PM
27°
33%
3 PM
27°
37%
4 PM
27°
52%
5 PM
27°
56%
6 PM
27°
57%
7 PM
26°
65%
8 PM
24°
61%
9 PM
23°
68%
10 PM
22°
69%
11 PM
20°
69%
12 AM
19°
69%
1 AM
19°
69%
2 AM
18°
70%
3 AM
17°
76%
7-Day Forecast
Today
27° 16°
Mostly Cloudy with a 69% chance of rain.
Tue
24° 16°
Mostly Cloudy with a 76% chance of rain.
Wed
23° 14°
Partly Cloudy with a 45% chance of rain.
Thu
24° 14°
Clear with a 33% chance of rain.
Fri
28° 15°
Drizzle, 51% chance.
Sat
27° 17°
Rain, 70% chance.
Sun
25° 15°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 15° Fog 8% 2 mph W 93%
5 AM 14° Fog 10% 2 mph WSW 92%
6 AM 13° Fog 12% 2 mph WSW 90%
7 AM 13° Mostly Cloudy 13% 3 mph WSW 90%
8 AM 16° Mostly Cloudy 29% 3 mph SW 87%
9 AM 17° Mostly Cloudy 42% 5 mph SW 82%
10 AM 21° Mostly Cloudy 37% 7 mph SW 76%
11 AM 22° Overcast 32% 7 mph SW 71%
12 PM 24° Partly Cloudy 44% 8 mph SW 68%
1 PM 24° Partly Cloudy 44% 9 mph SW 66%
2 PM 27° Mostly Cloudy 33% 10 mph SW 62%
3 PM 27° Partly Cloudy 37% 11 mph SW 62%
4 PM 27° Partly Cloudy 52% 11 mph SW 61%
5 PM 27° Partly Cloudy 56% 10 mph SW 62%
6 PM 27° Partly Cloudy 57% 9 mph SW 69%
7 PM 26° Partly Cloudy 65% 6 mph WSW 76%
8 PM 24° Mostly Cloudy 61% 5 mph WSW 83%
9 PM 23° Mostly Cloudy 68% 5 mph WSW 86%
10 PM 22° Mostly Cloudy 69% 6 mph SW 88%
11 PM 20° Overcast 69% 7 mph SW 90%
12 AM 19° Mostly Cloudy 69% 6 mph SW 92%
1 AM 19° Mostly Cloudy 69% 7 mph WSW 94%
2 AM 18° Mostly Cloudy 70% 8 mph W 96%
3 AM 17° Mostly Cloudy 76% 7 mph W 96%
15-Day Forecast
Today
7/27
Mostly Cloudy
69%
16°
27°
Tue
7/28
Mostly Cloudy
76%
16°
24°
Wed
7/29
Partly Cloudy
45%
14°
23°
Thu
7/30
Clear
33%
14°
24°
Fri
7/31
Drizzle
51%
15°
28°
Sat
8/1
Rain
70%
17°
27°
Sun
8/2
Rain
63%
15°
25°
Mon
8/3
Clear
18%
14°
27°
Tue
8/4
Drizzle
44%
16°
29°
Wed
8/5
Drizzle
51%
17°
30°
Thu
8/6
Drizzle
60%
14°
26°
Fri
8/7
Drizzle
60%
14°
26°
Sat
8/8
Drizzle
60%
14°
25°
Sun
8/9
Drizzle
60%
14°
24°
Mon
8/10
Drizzle
60%
13°
24°
52
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
52 AQI 10.0 µg/m³
O3
Ground-level ozone
35 AQI 39 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 35 52
Tue 55 Moderate 39 55
Wed 56 Moderate 33 56
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Mon Jul 27, 06:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 70 80 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE0 J/kg
MLCAPE7 J/kg
MUCAPE416 J/kg
SBCIN-9941 J/kg
MLCIN0 J/kg
Lifted Index3.1
Kinematics
0–6 km Shear21 kt
0–1 km Shear10 kt
Eff. Shear25 kt
0–1 km SRH-37
0–3 km SRH-90
Eff. SRH-102
Storm Motion286° @ 23 kt
0–1 km EHI-0.0
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index26.1
Thermo & Levels
PWAT1.04 in
0–3 km LR4.1 °C/km
700–500 LR6.5 °C/km
Total Totals44.0
LCL945 hPa
LFC—
EL—
Freezing Lvl11,102 ft