Mission Viejo UV index in September
Typical ultraviolet levels for Mission Viejo during September, from the past year of data.
Very High
Mission Viejo
Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
8.1
UV Index
September average UTC
Low
Moderate
High
Very High
Extreme
September UV
8.0802
Risk level
Very High
Yearly peak
10.1338
Peak month
July
Mission Viejo UV index — monthly trend
Average UV index by month over the past year, with September highlighted.
Visiting Mission Viejo in September?
In September, Mission Viejo's typical UV index is about 8.0802 — a very high risk level. Very high UV. Limit sun exposure, especially during midday; protective clothing, sunscreen, and a hat are essential.
Across the year, Mission Viejo sees the strongest UV in Summer, peaking around 10.1338 in July. Plan sun protection accordingly.
