UV Index Today in North Hempstead, Nassau County, New York (NY)

Sunday, September 20, 2026 -12:22 PM EDT (GMT-4)

The UV Index in North Hempstead, Nassau County, New York (NY) right now is 0.6. This reading was last updated at 12:00 PM EDT, about 22 minutes ago. The UV Index at1:00 PM EDT, in about 37 minutes from now, is expected to be 0.5.

The maximum UV Index today in North Hempstead is expected to be 0.7 at 2:00 PM EDT,1 hour and 37 minutes from now. The maximum UV Index tomorrow is expected to be 3.8 at 1:00 PM EDT.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

September 20
0.7
2:00 PM EDT
Low

Tomorrow

September 21
3.8
1:00 PM EDT
Moderate

UV Index Today Hourly

September 20

UV levels in North Hempstead, Nassau County, New York (NY) are projected to top out at 0.7 today, hitting Low risk near 2:00 PM EDT.

02468108 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMEastern Daylight Time (EDT, GMT-4)Now: 12:22 PM00.10.20.20.60.50.70.30.30.10.10
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

September 21

UV levels in North Hempstead, Nassau County, New York (NY) are projected to top out at 3.8 tomorrow, hitting Moderate risk near 1:00 PM EDT.

02468107 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMEastern Daylight Time (EDT, GMT-4)00.20.61.42.43.33.82.50.80.50.60.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

5 Day UV Index Forecast

September 19, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.4
Low
9:00 AM1.3
Low
10:00 AM2.8
Moderate
11:00 AM4.7
Moderate
12:00 PM6.1
High
1:00 PM6.5
High
2:00 PM5.9
High
3:00 PM4.4
Moderate
4:00 PM2.6
Moderate
5:00 PM0.6
Low
6:00 PM0.3
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 20, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0
Low
9:00 AM0.1
Low
10:00 AM0.2
Low
11:00 AM0.2
Low
12:00 PM0.6
Low
1:00 PM0.5
Low
2:00 PM0.7
Low
3:00 PM0.3
Low
4:00 PM0.3
Low
5:00 PM0.1
Low
6:00 PM0.1
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 21, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.2
Low
9:00 AM0.6
Low
10:00 AM1.4
Low
11:00 AM2.4
Low
12:00 PM3.3
Moderate
1:00 PM3.8
Moderate
2:00 PM2.5
Moderate
3:00 PM0.8
Low
4:00 PM0.5
Low
5:00 PM0.6
Low
6:00 PM0.2
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 22, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0
Low
9:00 AM0.2
Low
10:00 AM0.2
Low
11:00 AM0.4
Low
12:00 PM0.7
Low
1:00 PM0.6
Low
2:00 PM0.3
Low
3:00 PM0.3
Low
4:00 PM0.2
Low
5:00 PM0.1
Low
6:00 PM0
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low

September 23, 2026

TimeUV IndexRisk
12:00 AM0
Low
1:00 AM0
Low
2:00 AM0
Low
3:00 AM0
Low
4:00 AM0
Low
5:00 AM0
Low
6:00 AM0
Low
7:00 AM0
Low
8:00 AM0.2
Low
9:00 AM0.7
Low
10:00 AM1.2
Low
11:00 AM1.9
Low
12:00 PM2
Low
1:00 PM2.1
Low
2:00 PM1.9
Low
3:00 PM1.3
Low
4:00 PM0.9
Low
5:00 PM0.5
Low
6:00 PM0.2
Low
7:00 PM0
Low
8:00 PM0
Low
9:00 PM0
Low
10:00 PM0
Low
11:00 PM0
Low
Data Source: National Oceanic and Atmospheric Administration (NOAA)

Nearby Places

Maximum UV Index Today
Data Source: National Oceanic and Atmospheric Administration (NOAA)