Heat Advisory — Mason, MI, Lake, MI, Osceola, MI, Clare, MI, Oceana, MI, Newaygo, MI, Mecosta, MI, Isabella, MI, Muskegon, MI, Montcalm, MI, Gratiot, MI, Ottawa, MI, Kent, MI, Ionia, MI, Clinton, MI, Allegan, MI, Barry, MI, Eaton, MI, Ingham, MI, Van Buren, MI, Kalamazoo, MI, Calhoun, MI, Jackson, MI 7:00 PM

Ottawa County, Michigan, United States

Last updated: 6:43 PM CDT  ·  Refresh
29°C
Feels like 32°
Mostly Clear
▲ 33°  /  ▼ 19°
Wind
9 mph WNW
Humidity
71%
Dew Point
22°
Pressure
29.32 inHg
Visibility
5 mi
UV Index
3.8
Cloud Cover
12%
Sunrise
6:18 AM
Sunset
9:20 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Ottawa County is currently mostly clear at 29°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 1649 J/kg) — isolated convective development possible. Sunrise: 6:18AM · Sunset: 9:20PM.

Alerts

Heat Advisory
Mason, MI, Lake, MI, Osceola, MI, Clare, MI, Oceana, MI, Newaygo, MI, Mecosta, MI, Isabella, MI, Muskegon, MI, Montcalm, MI, Gratiot, MI, Ottawa, MI, Kent, MI, Ionia, MI, Clinton, MI, Allegan, MI, Barry, MI, Eaton, MI, Ingham, MI, Van Buren, MI, Kalamazoo, MI, Calhoun, MI, Jackson, MI
Expires 7:00 PM
109 AQI · Unhealthy for Sensitive Groups Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
29°
11%
8 PM
29°
23%
9 PM
28°
23%
10 PM
26°
14%
11 PM
24°
14%
12 AM
24°
14%
1 AM
23°
7%
2 AM
22°
3%
3 AM
21°
3%
4 AM
20°
3%
5 AM
20°
3%
6 AM
19°
3%
7 AM
19°
3%
8 AM
22°
3%
9 AM
24°
3%
10 AM
27°
3%
11 AM
28°
3%
12 PM
29°
3%
1 PM
31°
3%
2 PM
33°
3%
3 PM
33°
3%
4 PM
33°
3%
5 PM
33°
3%
6 PM
32°
3%
7-Day Forecast
Tonight
33° 19°
Mostly Clear.
Thu
33° 19°
Mostly Clear.
Fri
33° 20°
Partly Cloudy.
Sat
30° 16°
Partly Cloudy with a 44% chance of rain.
Sun
28° 14°
Mostly Clear.
Mon
29° 15°
Heavy Rain, 90% chance.
Tue
28° 14°
Clear with a 52% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 29° Mostly Clear 11% 9 mph WNW 71%
8 PM 29° Mostly Clear 23% 6 mph WNW 66%
9 PM 28° Mostly Clear 23% 4 mph NW 67%
10 PM 26° Partly Cloudy 14% 5 mph N 67%
11 PM 24° Partly Cloudy 14% 5 mph NNE 66%
12 AM 24° Mostly Cloudy 14% 5 mph NNE 64%
1 AM 23° Mostly Cloudy 7% 5 mph NE 62%
2 AM 22° Mostly Cloudy 3% 5 mph NE 62%
3 AM 21° Mostly Cloudy 3% 4 mph NNE 64%
4 AM 20° Partly Cloudy 3% 4 mph NE 66%
5 AM 20° Mostly Clear 3% 4 mph NE 66%
6 AM 19° Mostly Clear 3% 4 mph NE 66%
7 AM 19° Clear 3% 4 mph NE 64%
8 AM 22° Clear 3% 4 mph NE 56%
9 AM 24° Clear 3% 5 mph NE 47%
10 AM 27° Clear 3% 5 mph NE 39%
11 AM 28° Clear 3% 4 mph NE 36%
12 PM 29° Clear 3% 4 mph NNE 35%
1 PM 31° Clear 3% 4 mph N 33%
2 PM 33° Clear 3% 4 mph NNW 33%
3 PM 33° Mostly Clear 3% 5 mph NW 34%
4 PM 33° Mostly Clear 3% 6 mph NW 35%
5 PM 33° Mostly Clear 3% 6 mph NW 38%
6 PM 32° Partly Cloudy 3% 6 mph NW 43%
15-Day Forecast
Today
7/15
Mostly Clear
14%
19°
33°
Thu
7/16
Mostly Clear
7%
19°
33°
Fri
7/17
Partly Cloudy
12%
20°
33°
Sat
7/18
Partly Cloudy
44%
16°
30°
Sun
7/19
Mostly Clear
14%
14°
28°
Mon
7/20
Heavy Rain
90%
15°
29°
Tue
7/21
Clear
52%
14°
28°
Wed
7/22
Mostly Clear
8%
13°
27°
Thu
7/23
Overcast
18%
15°
29°
Fri
7/24
Rain
68%
17°
29°
Sat
7/25
Drizzle
51%
17°
27°
Sun
7/26
Drizzle
60%
18°
29°
Mon
7/27
Drizzle
60%
17°
29°
Tue
7/28
Drizzle
60%
17°
29°
Wed
7/29
Drizzle
60%
17°
30°
109
Unhealthy for Sensitive Groups
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Members of sensitive groups may experience health effects; the general public is less likely to be affected.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
109 AQI 38.7 µg/m³
O3
Ground-level ozone
77 AQI 63 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Thu 109 Unhealthy for Sensitive Groups 77 109
Fri 491 Hazardous 90 491
Sat 215 Very Unhealthy 90 215
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 Wed Jul 15, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1843 J/kg
MLCAPE1472 J/kg
MUCAPE2574 J/kg
SBCIN-213 J/kg
MLCIN0 J/kg
Lifted Index-3.8
Kinematics
0–6 km Shear22 kt
0–1 km Shear8 kt
Eff. Shear28 kt
0–1 km SRH-10
0–3 km SRH-98
Eff. SRH-98
Storm Motion258° @ 21 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index14.2
Thermo & Levels
PWAT1.31 in
0–3 km LR5.2 °C/km
700–500 LR6.6 °C/km
Total Totals42.8
LCL904 hPa
LFC677 hPa
EL179 hPa
Freezing Lvl15,617 ft