Heat Advisory — Houston, TX, Trinity, TX, Madison, TX, Walker, TX, San Jacinto, TX, Polk, TX, Burleson, TX, Brazos, TX, Washington, TX, Grimes, TX, Montgomery, TX, Northern Liberty, TX, Colorado, TX, Austin, TX, Waller, TX, Inland Harris, TX, Chambers, TX, Wharton, TX, Fort Bend, TX, Inland Jackson, TX, Inland Matagorda, TX, Inland Brazoria, TX, Inland Galveston, TX, Southern Liberty, TX, Coastal Harris, TX, Coastal Jackson, TX, Coastal Matagorda, TX, Coastal Brazoria, TX, Coastal Galveston, TX, Matagorda Islands, TX, Brazoria Islands, TX, Galveston Island, TX, Bolivar Peninsula, TX 7:00 PM

Houston, Texas

Last updated: 3:43 AM CDT  ·  Refresh
27°C
Feels like 30°
Mostly Clear
▲ 39°  /  ▼ 26°
Wind
6 mph SSW
Humidity
85%
Dew Point
25°
Pressure
29.86 inHg
Visibility
9 mi
UV Index
0.0
Cloud Cover
11%
Sunrise
6:55 AM
Sunset
7:52 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Houston is currently mostly clear at 27°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2238 J/kg) — isolated convective development possible. Sunrise: 6:55AM · Sunset: 7:52PM.

Alerts

Heat Advisory
Houston, TX, Trinity, TX, Madison, TX, Walker, TX, San Jacinto, TX, Polk, TX, Burleson, TX, Brazos, TX, Washington, TX, Grimes, TX, Montgomery, TX, Northern Liberty, TX, Colorado, TX, Austin, TX, Waller, TX, Inland Harris, TX, Chambers, TX, Wharton, TX, Fort Bend, TX, Inland Jackson, TX, Inland Matagorda, TX, Inland Brazoria, TX, Inland Galveston, TX, Southern Liberty, TX, Coastal Harris, TX, Coastal Jackson, TX, Coastal Matagorda, TX, Coastal Brazoria, TX, Coastal Galveston, TX, Matagorda Islands, TX, Brazoria Islands, TX, Galveston Island, TX, Bolivar Peninsula, TX
Expires 7:00 PM
57 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
27°
3%
4 AM
27°
3%
5 AM
24°
3%
6 AM
24°
3%
7 AM
25°
3%
8 AM
27°
3%
9 AM
28°
3%
10 AM
30°
4%
11 AM
32°
4%
12 PM
33°
5%
1 PM
36°
5%
2 PM
37°
5%
3 PM
37°
5%
4 PM
37°
14%
5 PM
39°
14%
6 PM
38°
14%
7 PM
37°
24%
8 PM
35°
24%
9 PM
32°
15%
10 PM
31°
3%
11 PM
30°
3%
12 AM
29°
3%
1 AM
29°
3%
2 AM
29°
3%
7-Day Forecast
Today
39° 26°
Mostly Clear.
Wed
40° 26°
Mostly Clear.
Thu
40° 25°
Mostly Clear with a 43% chance of rain.
Fri
37° 24°
Rain, 65% chance.
Sat
39° 24°
Drizzle, 37% chance.
Sun
38° 24°
Drizzle, 38% chance.
Mon
38° 24°
Drizzle, 38% chance.
TimeTempConditionsPrecipWindHumidity
Now 27° Mostly Clear 3% 6 mph SSW 85%
4 AM 27° Clear 3% 6 mph SSW 86%
5 AM 24° Mostly Clear 3% 5 mph SSW 88%
6 AM 24° Mostly Clear 3% 5 mph SSW 89%
7 AM 25° Mostly Clear 3% 4 mph SSW 85%
8 AM 27° Partly Cloudy 3% 6 mph SW 79%
9 AM 28° Partly Cloudy 3% 7 mph SW 72%
10 AM 30° Mostly Clear 4% 6 mph SW 63%
11 AM 32° Mostly Clear 4% 5 mph SW 55%
12 PM 33° Clear 5% 3 mph SW 47%
1 PM 36° Clear 5% 3 mph SSW 42%
2 PM 37° Clear 5% 3 mph SSE 39%
3 PM 37° Clear 5% 4 mph SE 36%
4 PM 37° Mostly Clear 14% 5 mph SE 37%
5 PM 39° Partly Cloudy 14% 8 mph SE 40%
6 PM 38° Mostly Clear 14% 11 mph SSE 44%
7 PM 37° Mostly Clear 24% 12 mph SSE 51%
8 PM 35° Mostly Clear 24% 12 mph S 57%
9 PM 32° Mostly Clear 15% 11 mph S 63%
10 PM 31° Mostly Clear 3% 11 mph S 68%
11 PM 30° Mostly Clear 3% 10 mph S 72%
12 AM 29° Mostly Clear 3% 9 mph S 76%
1 AM 29° Mostly Clear 3% 9 mph SSW 78%
2 AM 29° Partly Cloudy 3% 9 mph SSW 79%
15-Day Forecast
Today
8/25
Mostly Clear
15%
26°
39°
Wed
8/26
Mostly Clear
6%
26°
40°
Thu
8/27
Mostly Clear
43%
25°
40°
Fri
8/28
Rain
65%
24°
37°
Sat
8/29
Drizzle
37%
24°
39°
Sun
8/30
Drizzle
38%
24°
38°
Mon
8/31
Drizzle
38%
24°
38°
Tue
9/1
Rain
44%
24°
38°
Wed
9/2
Clear
19%
24°
39°
Thu
9/3
Clear
27%
24°
38°
Fri
9/4
Clear
25%
26°
39°
Sat
9/5
Clear
60%
26°
39°
Sun
9/6
Drizzle
60%
26°
38°
Mon
9/7
Drizzle
60%
26°
38°
Tue
9/8
Drizzle
60%
26°
38°
57
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
57 AQI 12.3 µg/m³
O3
Ground-level ozone
41 AQI 45 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 57 Moderate 41 57
Wed 53 Moderate 40 53
Thu 55 Moderate 44 55
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 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Tue Aug 25, 07:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2136 J/kg
MLCAPE1043 J/kg
MUCAPE2136 J/kg
SBCIN-209 J/kg
MLCIN-340 J/kg
Lifted Index-6.1
Kinematics
0–6 km Shear22 kt
0–1 km Shear10 kt
Eff. Shear16 kt
0–1 km SRH-63
0–3 km SRH-62
Eff. SRH-62
Storm Motion115° @ 20 kt
0–1 km EHI-0.8
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index19.0
Thermo & Levels
PWAT1.67 in
0–3 km LR4.3 °C/km
700–500 LR7.1 °C/km
Total Totals38.3
LCL976 hPa
LFC670 hPa
EL157 hPa
Freezing Lvl16,263 ft