Massac County, Illinois, United States

Last updated: 4:29 PM CDT  ·  Refresh
28°C
Feels like 27°
Clear
▲ 28°  /  ▼ 14°
Wind
3 mph SSE
Humidity
36%
Dew Point
11°
Pressure
29.53 inHg
Visibility
10 mi
UV Index
5.6
Cloud Cover
2%
Sunrise
6:48 AM
Sunset
6:40 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Massac County is currently clear at 28°C. Dry conditions are expected through the next 24 hours. Sunrise: 6:48AM · Sunset: 6:40PM.

Alerts

No active alerts for this location.
48 AQI · Good Dominant: O3 Air Quality
Hourly Forecast · Next 24 Hours
Now
28°
3%
5 PM
28°
3%
6 PM
26°
3%
7 PM
24°
3%
8 PM
23°
3%
9 PM
21°
3%
10 PM
20°
3%
11 PM
19°
3%
12 AM
19°
3%
1 AM
18°
3%
2 AM
17°
3%
3 AM
17°
3%
4 AM
17°
3%
5 AM
15°
3%
6 AM
14°
3%
7 AM
14°
3%
8 AM
17°
3%
9 AM
20°
3%
10 AM
23°
3%
11 AM
25°
3%
12 PM
27°
3%
1 PM
29°
3%
2 PM
30°
3%
3 PM
34°
3%
7-Day Forecast
Today
28° 14°
Clear.
Wed
34° 14°
Mostly Clear.
Thu
35° 18°
Mostly Clear with a 49% chance of rain.
Fri
29° 18°
Thunderstorm, 81% chance.
Sat
26° 15°
Rain, 81% chance.
Sun
28° 14°
Drizzle, 90% chance.
Mon
24° 10°
Clear.
TimeTempConditionsPrecipWindHumidity
Now 28° Clear 3% 3 mph SSE 36%
5 PM 28° Clear 3% 4 mph SE 42%
6 PM 26° Clear 3% 5 mph ESE 48%
7 PM 24° Partly Cloudy 3% 6 mph ESE 50%
8 PM 23° Mostly Cloudy 3% 6 mph ESE 49%
9 PM 21° Mostly Cloudy 3% 6 mph ESE 47%
10 PM 20° Mostly Cloudy 3% 6 mph ESE 46%
11 PM 19° Mostly Cloudy 3% 6 mph ESE 48%
12 AM 19° Mostly Cloudy 3% 5 mph ESE 49%
1 AM 18° Mostly Cloudy 3% 5 mph SE 51%
2 AM 17° Mostly Cloudy 3% 5 mph SE 52%
3 AM 17° Overcast 3% 5 mph SE 54%
4 AM 17° Mostly Cloudy 3% 5 mph SE 56%
5 AM 15° Mostly Cloudy 3% 5 mph SE 60%
6 AM 14° Partly Cloudy 3% 6 mph SE 64%
7 AM 14° Partly Cloudy 3% 6 mph SE 63%
8 AM 17° Partly Cloudy 3% 6 mph SSE 56%
9 AM 20° Partly Cloudy 3% 6 mph S 47%
10 AM 23° Partly Cloudy 3% 8 mph S 43%
11 AM 25° Partly Cloudy 3% 9 mph S 39%
12 PM 27° Partly Cloudy 3% 9 mph S 35%
1 PM 29° Partly Cloudy 3% 9 mph S 37%
2 PM 30° Mostly Clear 3% 9 mph S 38%
3 PM 34° Clear 3% 10 mph S 40%
15-Day Forecast
Today
9/29
Clear
3%
14°
28°
Wed
9/30
Mostly Clear
3%
14°
34°
Thu
10/1
Mostly Clear
49%
18°
35°
Fri
10/2
Thunderstorm
81%
18°
29°
Sat
10/3
Rain
81%
15°
26°
Sun
10/4
Drizzle
90%
14°
28°
Mon
10/5
Clear
17%
10°
24°
Tue
10/6
Clear
42%
9°
23°
Wed
10/7
Drizzle
60%
9°
27°
Thu
10/8
Clear
25%
12°
28°
Fri
10/9
Clear
14%
11°
27°
Sat
10/10
Clear
3%
9°
26°
Sun
10/11
Drizzle
60%
10°
27°
Mon
10/12
Clear
60%
11°
25°
Tue
10/13
Drizzle
60%
10°
26°
48
Good
U.S. Air Quality Index · Dominant: O3
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
31 AQI 5.6 µg/m³
O3
Ground-level ozone
Dominant
48 AQI 53 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Wed 48 Good 48 31
Thu 46 Good 46 36
Fri 46 Good 46 34
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.

Model sounding data is unavailable for this location.