Markham Weather Today — Illinois, United States
Current temperature, rain chance, humidity, wind and air quality in Markham, plus an hourly and 3-day forecast. Updated through the day.
11:08
Fri, 18 Sep 2026
📍 Illinois, United States
Markham??
22
°C
Overcast
Feels 20°C · 71°F
💧 57% Humidity
💨 → 13.3 km/h ENE
👁 10 km Visibility
🌧 0 mm Precip
☁ 100% Cloud
☀️ UV Moderate
🌿 AQI Good
☀️ UV Index
4.8
Moderate
🔵 Pressure
1024
hPa · 30.23 in
💨 Wind
13.3
km/h · Gust 16.6 km/h
→ ENE
💧 Humidity
57%
Dew point 12.8°C
👁 Visibility
10
km · 6 miles
🌡 Heat Index
24.5°
Wind chill 21.7°C
🌿 Air Quality
Good
US EPA Index: 1
🌅
Sunrise
06:34 AM
🌇
Sunset
06:55 PM
📅 3-Day Forecast
Friday
18 Sep 2026
Overcast
24°
/
16°
💧70%
🌧0.16mm
💨17
☀️UV 6.2
Saturday
19 Sep 2026
Light rain shower
20°
/
15°
💧91%
🌧9.05mm
💨15
☀️UV 1.1
Sunday
20 Sep 2026
Light rain shower
20°
/
15°
💧96%
🌧4.57mm
💨22
☀️UV 2.3
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