UV Index Today in Urban Honolulu, Hawaii (HI)

Sunday, September 20, 2026 -6:23 AM HST (GMT-10)

The UV Index in Urban Honolulu, Hawaii (HI) right now is 0. This reading was last updated at 6:00 AM HST, about 23 minutes ago. The UV Index at7:00 AM HST, in about 36 minutes from now, is expected to be 0.2.

The maximum UV Index today in Urban Honolulu is expected to be 11.2 at 12:00 PM HST,5 hours and 36 minutes from now. The maximum UV Index tomorrow is expected to be 11.4 at 12:00 PM HST.

Data Source: National Oceanic and Atmospheric Administration (NOAA)

Today

September 20
11.2
12:00 PM HST
Extreme

Tomorrow

September 21
11.4
12:00 PM HST
Extreme

UV Index Today Hourly

September 20

The UV Index for Urban Honolulu, Hawaii (HI) peaks at 11.2 today at 12:00 PM HST, classified as Extreme risk.

0246810126 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMHawaii-Aleutian Standard Time (HST, GMT-10)Now: 6:23 AM00.21.13.36.49.411.211.19.46.43.31.10.20
Data Source: National Oceanic and Atmospheric Administration (NOAA)

UV Index Tomorrow Hourly

September 21

Weather models predict UV Index 11.4 for Urban Honolulu, Hawaii (HI) tomorrow, peaking near 12:00 PM HST - Extreme risk level.

0246810126 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PMHawaii-Aleutian Standard Time (HST, GMT-10)00.213.36.49.511.411.49.56.43.31.10.20
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 AM0.2
Low
8:00 AM1.1
Low
9:00 AM3.2
Moderate
10:00 AM6.4
High
11:00 AM9.3
Very High
12:00 PM11
Extreme
1:00 PM11.3
Extreme
2:00 PM9.6
Very High
3:00 PM6.6
High
4:00 PM3.4
Moderate
5:00 PM1.2
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 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 AM0.2
Low
8:00 AM1.1
Low
9:00 AM3.3
Moderate
10:00 AM6.4
High
11:00 AM9.4
Very High
12:00 PM11.2
Extreme
1:00 PM11.1
Extreme
2:00 PM9.4
Very High
3:00 PM6.4
High
4:00 PM3.3
Moderate
5:00 PM1.1
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 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 AM0.2
Low
8:00 AM1
Low
9:00 AM3.3
Moderate
10:00 AM6.4
High
11:00 AM9.5
Very High
12:00 PM11.4
Extreme
1:00 PM11.4
Extreme
2:00 PM9.5
Very High
3:00 PM6.4
High
4:00 PM3.3
Moderate
5:00 PM1.1
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 AM0.1
Low
8:00 AM0.7
Low
9:00 AM2.3
Low
10:00 AM4.9
Moderate
11:00 AM8.8
Very High
12:00 PM10.6
Extreme
1:00 PM10.7
Extreme
2:00 PM8.6
Very High
3:00 PM5.8
High
4:00 PM3.1
Moderate
5:00 PM1
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 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 AM0.1
Low
8:00 AM0.9
Low
9:00 AM2.8
Moderate
10:00 AM5.8
High
11:00 AM8.6
Very High
12:00 PM10.4
Very High
1:00 PM11.1
Extreme
2:00 PM9.2
Very High
3:00 PM6.3
High
4:00 PM3.2
Moderate
5:00 PM1.1
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)