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Ontario Running Weather

Saturday, April 11, 2026 · Hour-by-hour forecast updated 8:06 AM PDT

Best Time to Run in Ontario Today

All day

65°F and mostly sunny at peak. Wind 4 mph from the WSW, dew point 50°F.

99
Peak FitScore
Temperature
65°F / feels 63°
Wind
4 mph WSW, gusts 8
Dew Point
50°F — comfortable
Humidity
60%
UV Index
4 — Moderate
Air Quality
25 AQI — Good

Hourly running conditions

☀️ 8 AM
94
59° feels 58° 6 mph WNW 7% rain
🌤️ 9 AM
96
62° feels 61° 4 mph W 5% rain
🌤️ 10 AM
99
65° feels 63° 4 mph WSW 1% rain
🌤️ 11 AM
99
67° feels 65° 5 mph WSW 2% rain
🌤️ 12 PM
93
70° feels 69° 6 mph WSW
☀️ 1 PM
87
72° feels 71° 8 mph W
☀️ 2 PM
85
73° feels 71° 11 mph W
🌤️ 3 PM
85
72° feels 68° 14 mph WSW
☀️ 4 PM
91
70° feels 65° 14 mph WSW
☀️ 5 PM
91
68° feels 61° 14 mph WSW
☀️ 6 PM
92
65° feels 59° 13 mph WSW 1% rain
☀️ 7 PM
94
62° feels 56° 12 mph WSW 1% rain
80–100 Excellent 60–79 Good 40–59 Fair Below 40 Poor

7-day running forecast

☁️
Today Apr 11
73° / 56°
99
🏃 All day
🌧️
Sun Apr 12
59° / 50°
99
🏃 All day 💧 39%
🌧️
Mon Apr 13
66° / 49°
98
🏃 9 AM–12 PM
☀️
Tue Apr 14
73° / 54°
100
🏃 9 AM–12 PM
☁️
Wed Apr 15
74° / 57°
99
🏃 9 AM–12 PM
☁️
Thu Apr 16
71° / 57°
99
🏃 9 AM–12 PM
🌤️
Fri Apr 17
75° / 57°
98
🏃 9 AM–12 PM
Get Ontario's forecast every evening

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🌤 Tomorrow in Ontario: Best window: 9–11 AM (FitScore 95) 6am: 48°F, feels 45° — NW 8mph 9am: 58°F, feels 56° — W 12mph 12pm: 66°F, feels 65° — SW 8mph ☔ Rain likely after 3pm.
Yesterday 8:14 PM Nightly

Ontario running weather FAQ

What's the best time to run in Ontario today?

Based on today's FitScore analysis, the best time to run is All day with a peak FitScore of 99/100. Check the hourly breakdown above for detailed conditions throughout the day.

What months are best for running in Ontario?

The best months for running in Ontario are June, July, August, September. The most challenging months are typically November, December. Mild summers with low humidity make for ideal running. Watch for marine layer fog in coastal areas.

What is the FitScore?

FitScore rates each hour from 0–100 for outdoor exercise based on temperature, humidity, dew point, wind, precipitation probability, UV index, and air quality. Higher scores mean better conditions.

Nearby:Pomona, CAFontana, CACorona, CA
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