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Larkspur, CA chak today UV index
California · Tuesday, September 29 chak EPA forecast
Today's forecast has not been published yet; this is the latest forecast, for Tuesday, September 29.
Sun protection needed from 11:00 to 17:00 (UV 3 or higher).
The EPA forecasts a peak UV index of 6 (High) in Larkspur on Tuesday, September 29.
Hour by hour
| Time | UV index | Level |
|---|---|---|
| 09:00 | 1 | Low |
| 10:00 | 2 | Low |
| 11:00 | 4 | Moderate |
| 12:00 | 5 | Moderate |
| 13:00 | 6 | High |
| 14:00 | 6 | High |
| 15:00 | 5 | Moderate |
| 16:00 | 3 | Moderate |
| 17:00 | 1 | Low |
What UV 6 (High) means today
Unprotected sun exposure chak high risk: skin ani eyes chak protection need kha. Middle of the day chak sun chak time reduce kha, shade seek kha, ani protective clothing, wide-brimmed hat, UV-blocking sunglasses ani broad-spectrum SPF 30+ sunscreen wear kha, every 2 hours reapplied.
Shadow rule: aokha shadow aokha chini kha chini, sun's UV khwchak - aokha rakha.
Typical UV index in Larkspur by month
Average daily peak UV index over 2023–2024: highest in July (8.8), lowest in December (1.6). The average daily peak reaches 6 (high) or more in: April, May, June, July, August, September.
Monthly averages: hourly UV index under real sky conditions, clouds included, from NASA POWER satellite data (CERES), 2023–2024, on a 1° grid shared by nearby towns. The daily forecast above is the EPA's.
Aokha chini khong UV index
- San Francisco
20 km away8 - Berkeley
24 km away6 - Oakland
27 km away6 - Vallejo
31 km away6 - Concord
44 km away6 - Hayward
50 km away6 - Fairfield
56 km away6 - Santa Rosa
58 km away6
UV index scale
| UV index | Level |
|---|---|
| 0–2 | Low Average person chak sun's UV rays chak low danger. Bright days chak sunglasses wear kha. If you burn easily, cover up ani broad-spectrum SPF 30+ sunscreen use kha. Sand, water ani snow chak UV reflect kha ani exposure add kha. |
| 3–5 | Moderate Unprotected sun exposure chak moderate risk. Midday chak shade chak stay kha, when sun is strongest. Protective clothing, wide-brimmed hat ani UV-blocking sunglasses wear kha, ani broad-spectrum SPF 30+ sunscreen every 2 hours apply kha, even cloudy days chak, ani swimming or sweating chak after. |
| 6–7 | High Unprotected sun exposure chak high risk: skin ani eyes chak protection need kha. Middle of the day chak sun chak time reduce kha, shade seek kha, ani protective clothing, wide-brimmed hat, UV-blocking sunglasses ani broad-spectrum SPF 30+ sunscreen wear kha, every 2 hours reapplied. |
| 8–10 | Borobor Very high risk: unprotected skin ani eyes damaged kha ani quickly burn kha. Middle of the day chak sun chak time minimize kha, shade seek kha, ani clothing, wide-brimmed hat, UV-blocking sunglasses ani broad-spectrum SPF 30+ sunscreen chak cover up kha, every 2 hours reapplied. |
| 11+ | Extreme Extreme risk: unprotected skin ani eyes minutes chak burn kha. Middle of the day chak sun avoid kha try kha, shade chak stay kha, ani every protection use kha: clothing, wide-brimmed hat, UV-blocking sunglasses ani broad-spectrum SPF 30+ sunscreen, every 2 hours reapplied. |
Source: the EPA's hourly UV index forecast for ZIP code 94977, calculated by the National Weather Service from the ozone forecast, sun angle, elevation and expected clouds. Sunrise, solar noon and sunset are calculated for the city's coordinates.
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