Excessive Heat Watch 7:00 PM

Johns Creek, Georgia

Last updated: 10:05 PM CDT  ·  Refresh
29°C
Feels like 32°
Clear
▲ 33°  /  ▼ 24°
Wind
2 mph WSW
Humidity
72%
Dew Point
23°
Pressure
28.93 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
3%
Sunrise
6:29 AM
Sunset
8:52 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Johns Creek is currently clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 3140 J/kg) — isolated convective development possible. Sunrise: 6:29AM · Sunset: 8:52PM.

Alerts

Excessive Heat Watch
Expires 7:00 PM
51 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
21%
12 AM
28°
31%
1 AM
27°
14%
2 AM
27°
3%
3 AM
26°
3%
4 AM
26°
3%
5 AM
25°
4%
6 AM
24°
4%
7 AM
24°
4%
8 AM
25°
5%
9 AM
27°
5%
10 AM
30°
5%
11 AM
32°
13%
12 PM
33°
14%
1 PM
34°
14%
2 PM
37°
21%
3 PM
37°
25%
4 PM
36°
32%
5 PM
36°
39%
6 PM
35°
39%
7 PM
33°
39%
8 PM
32°
39%
9 PM
32°
39%
10 PM
28°
34%
7-Day Forecast
Tonight
33° 24°
Clear with a 21% chance of rain.
Thu
38° 24°
Partly Cloudy with a 39% chance of rain.
Fri
38° 24°
Mostly Clear.
Sat
37° 24°
Partly Cloudy with a 25% chance of rain.
Sun
36° 24°
Rain, 65% chance.
Mon
34° 23°
Rain, 64% chance.
Tue
35° 23°
Rain, 63% chance.
TimeTempConditionsPrecipWindHumidity
Now 29° Clear 21% 2 mph WSW 72%
12 AM 28° Clear 31% 3 mph WNW 75%
1 AM 27° Clear 14% 3 mph W 76%
2 AM 27° Clear 3% 3 mph WNW 77%
3 AM 26° Clear 3% 3 mph NW 79%
4 AM 26° Clear 3% 3 mph NW 81%
5 AM 25° Mostly Clear 4% 2 mph NW 82%
6 AM 24° Mostly Clear 4% 2 mph NW 81%
7 AM 24° Mostly Clear 4% 2 mph NW 80%
8 AM 25° Partly Cloudy 5% 2 mph NW 78%
9 AM 27° Partly Cloudy 5% 2 mph WNW 70%
10 AM 30° Partly Cloudy 5% 3 mph NW 62%
11 AM 32° Partly Cloudy 13% 3 mph NW 55%
12 PM 33° Partly Cloudy 14% 2 mph N 51%
1 PM 34° Mostly Cloudy 14% 3 mph ENE 46%
2 PM 37° Partly Cloudy 21% 4 mph ENE 42%
3 PM 37° Mostly Cloudy 25% 5 mph ENE 40%
4 PM 36° Mostly Cloudy 32% 6 mph ENE 40%
5 PM 36° Mostly Cloudy 39% 7 mph NE 40%
6 PM 35° Mostly Cloudy 39% 6 mph NE 48%
7 PM 33° Mostly Cloudy 39% 6 mph NNE 57%
8 PM 32° Mostly Cloudy 39% 6 mph NNE 65%
9 PM 32° Mostly Cloudy 39% 5 mph NNE 66%
10 PM 28° Partly Cloudy 34% 3 mph NNE 68%
15-Day Forecast
Today
7/1
Clear
21%
24°
33°
Thu
7/2
Partly Cloudy
39%
24°
38°
Fri
7/3
Mostly Clear
17%
24°
38°
Sat
7/4
Partly Cloudy
25%
24°
37°
Sun
7/5
Rain
65%
24°
36°
Mon
7/6
Rain
64%
23°
34°
Tue
7/7
Rain
63%
23°
35°
Wed
7/8
Drizzle
53%
23°
34°
Thu
7/9
Drizzle
44%
23°
34°
Fri
7/10
Drizzle
44%
24°
36°
Sat
7/11
Drizzle
90%
23°
38°
Sun
7/12
Drizzle
90%
22°
36°
Mon
7/13
Drizzle
60%
22°
32°
Tue
7/14
Drizzle
60%
22°
33°
Wed
7/15
Drizzle
60%
22°
33°
51
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
51 AQI 9.3 µg/m³
O3
Ground-level ozone
45 AQI 49 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 51 Moderate 45 51
Fri 58 Moderate 58 53
Sat 52 Moderate 48 52
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 Thu Jul 2, 01:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE3254 J/kg
MLCAPE3304 J/kg
MUCAPE3687 J/kg
SBCIN-100 J/kg
MLCIN0 J/kg
Lifted Index-8.8
Kinematics
0–6 km Shear18 kt
0–1 km Shear4 kt
Eff. Shear12 kt
0–1 km SRH-29
0–3 km SRH-50
Eff. SRH-50
Storm Motion52° @ 26 kt
0–1 km EHI-0.6
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index26.2
Thermo & Levels
PWAT1.83 in
0–3 km LR5.6 °C/km
700–500 LR7.6 °C/km
Total Totals56.6
LCL907 hPa
LFC826 hPa
EL149 hPa
Freezing Lvl14,898 ft