Outdoor exercise
Is it safe to run in Singapore today?
Live AQI and the best running window for Singapore based on Open-Meteo hourly forecasts.
Running today
Caution — shorten or lighten your run
Conditions are borderline. Healthy adults can usually still run outdoors, but consider shortening the session, easing the pace, or moving to the best window identified below. Anyone with asthma, COPD, heart disease, or who is pregnant should be more cautious and may prefer an indoor session today.
Current AQI in Singapore
126
Unhealthy for Sensitive Groups
Updated 4 Sept 2026, 16:00
Best window to run (next 12h)
20:00 – 21:00 · lowest ~117 AQI
Hourly AQI (next 12 hours)
Now
152
17:00
139
18:00
127
19:00
119
20:00
117
21:00
118
22:00
119
23:00
120
00:00
126
01:00
122
02:00
122
03:00
123
What affects air quality for runners in Singapore
Singapore's air quality is generally moderated by maritime airflow and frequent rainfall, yet urban emissions still shape local daily patterns. Traffic corridors and industrial zones can produce short-lived peaks, especially during high activity periods. Because the island is compact, weather shifts can quickly improve or worsen conditions across broad areas.