All comparisons

Boston vs Los Angeles

Live UV index comparison

Boston

United-States

2.1 Est. peak
Low
Los Angeles

United-States

3.6 Est. peak
Moderate

Live readings are temporarily unavailable — showing each city's modelled peak UV (historical average / clear-sky). Values update as live data returns.

Based on modelled peaks, Los Angeles has the stronger sun — UV 3.6 vs 2.1.

Side-by-side

MetricBostonLos Angeles
UV (peak)2.13.6
Risk levelLowModerate
Today's max UV2.13.6
CountryUnited-StatesUnited-States
Latitude42.318834.1141
Population4,208,58012,121,244

Monthly UV trend

Average UV index by month, Boston vs Los Angeles.

How this is calculated