As of 3:11 PM EDT on May 22, 2026, out of 19 cities in Middlesex County, MA in our database, 18 cities (95%) have a UV Index reading of Moderate, while 1 city (5%) have a UV Index reading of High. The city with the highest UV Index reading right now is East Pepperell, MA with a reading of 5.5.
Over the next 24 hours, the highest UV Index reading in Middlesex County, MA is expected to be 5.5 in East Pepperell between 3:00 PM - 4:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |