Australian UV-Index
The UV-Index is an indication of the maximum daily level of ultraviolet radiation (UVR) received at ground level.
ARPANSA maintains a network of dataloggers situated in Australian capital cities
that continuously record the UVR levels.
The information is retrieved daily at around 5PM, local time, from the mainland sites and the UV-Index for the day is calculated.
This page displays UV-Index reports for the previous seven days. Click here to view the latest UV-Index reports.
UV-Index for 08 February 2010
| Site |
UV-Index |
Index Time* |
UV Model |
Model Time** |
Latitude |
Longitude |
| Adelaide |
11 |
13:40 |
10 |
13:30 |
34.9S |
138.6E |
Brisbane |
12 |
12:10 |
12 |
12:00 |
27.5S |
153.0E |
Darwin |
13 |
12:50 |
14 |
13:00 |
12.4S |
130.9E |
Kingston |
9 |
13:30 |
9 |
13:20 |
43.0S |
147.3E |
Melbourne |
10 |
13:30 |
10 |
13:30 |
37.7S |
145.1E |
Newcastle |
10 |
13:10 |
11 |
13:10 |
32.9S |
151.7E |
Perth |
10 |
12:10 |
11 |
12:30 |
32.0S |
116.0E |
Sydney |
10 |
13:10 |
10 |
13:00 |
34.0S |
151.1E |
* Index Time indicates the time that the maximum UVR level occured for the day.
** Model Time indicates the time of the maximum forecast UVR level for the day (solar noon).
UV-Index for 07 February 2010
| Site |
UV-Index |
Index Time* |
UV Model |
Model Time** |
Latitude |
Longitude |
| Adelaide |
11 |
13:30 |
11 |
13:20 |
34.9S |
138.6E |
Brisbane |
6 |
12:30 |
12 |
12:00 |
27.5S |
153.0E |
Darwin |
12 |
12:50 |
14 |
13:00 |
12.4S |
130.9E |
Kingston |
9 |
13:30 |
9 |
13:20 |
43.0S |
147.3E |
Melbourne |
10 |
13:30 |
10 |
13:30 |
37.7S |
145.1E |
Newcastle |
10 |
13:10 |
11 |
13:00 |
32.9S |
151.7E |
Perth |
11 |
12:20 |
11 |
12:30 |
32.0S |
116.0E |
Sydney |
11 |
12:10 |
11 |
13:10 |
34.0S |
151.1E |
Townsville |
13 |
12:10 |
13 |
12:30 |
19.3S |
146.8E |
* Index Time indicates the time that the maximum UVR level occured for the day.
** Model Time indicates the time of the maximum forecast UVR level for the day (solar noon).
UV-Index for 06 February 2010
| Site |
UV-Index |
Index Time* |
UV Model |
Model Time** |
Latitude |
Longitude |
* Index Time indicates the time that the maximum UVR level occured for the day.
** Model Time indicates the time of the maximum forecast UVR level for the day (solar noon).
UV-Index for 05 February 2010
| Site |
UV-Index |
Index Time* |
UV Model |
Model Time** |
Latitude |
Longitude |
* Index Time indicates the time that the maximum UVR level occured for the day.
** Model Time indicates the time of the maximum forecast UVR level for the day (solar noon).
UV-Index for 04 February 2010
| Site |
UV-Index |
Index Time* |
UV Model |
Model Time** |
Latitude |
Longitude |
| Adelaide |
10 |
13:10 |
11 |
13:30 |
34.9S |
138.6E |
Brisbane |
13 |
12:10 |
12 |
12:00 |
27.5S |
153.0E |
Kingston |
9 |
14:10 |
9 |
13:20 |
43.0S |
147.3E |
Melbourne |
5 |
13:20 |
10 |
13:30 |
37.7S |
145.1E |
Newcastle |
10 |
12:30 |
11 |
13:00 |
32.9S |
151.7E |
Perth |
11 |
12:10 |
12 |
12:20 |
32.0S |
116.0E |
Sydney |
10 |
13:20 |
11 |
13:00 |
34.0S |
151.1E |
Townsville |
13 |
12:50 |
13 |
12:20 |
19.3S |
146.8E |
* Index Time indicates the time that the maximum UVR level occured for the day.
** Model Time indicates the time of the maximum forecast UVR level for the day (solar noon).
UV-Index for 03 February 2010
| Site |
UV-Index |
Index Time* |
UV Model |
Model Time** |
Latitude |
Longitude |
| Adelaide |
10 |
13:20 |
11 |
13:30 |
34.9S |
138.6E |
Brisbane |
13 |
12:40 |
12 |
12:00 |
27.5S |
153.0E |
Kingston |
9 |
13:30 |
9 |
13:20 |
43.0S |
147.3E |
Melbourne |
10 |
12:50 |
10 |
13:20 |
37.7S |
145.1E |
Newcastle |
10 |
13:30 |
11 |
13:00 |
32.9S |
151.7E |
Perth |
12 |
12:30 |
12 |
12:20 |
32.0S |
116.0E |
Sydney |
11 |
12:00 |
11 |
13:00 |
34.0S |
151.1E |
Townsville |
14 |
12:30 |
13 |
12:20 |
19.3S |
146.8E |
* Index Time indicates the time that the maximum UVR level occured for the day.
** Model Time indicates the time of the maximum forecast UVR level for the day (solar noon).
UV-Index for 02 February 2010
| Site |
UV-Index |
Index Time* |
UV Model |
Model Time** |
Latitude |
Longitude |
| Adelaide |
10 |
13:00 |
11 |
13:20 |
34.9S |
138.6E |
Brisbane |
11 |
13:10 |
12 |
12:00 |
27.5S |
153.0E |
Darwin |
12 |
13:40 |
14 |
13:00 |
12.4S |
130.9E |
Kingston |
8 |
13:30 |
9 |
13:20 |
43.0S |
147.3E |
Melbourne |
10 |
12:40 |
10 |
13:30 |
37.7S |
145.1E |
Newcastle |
11 |
13:20 |
11 |
13:00 |
32.9S |
151.7E |
Perth |
12 |
12:20 |
12 |
12:20 |
32.0S |
116.0E |
Sydney |
13 |
13:30 |
11 |
13:00 |
34.0S |
151.1E |
Townsville |
15 |
12:40 |
13 |
12:30 |
19.3S |
146.8E |
* Index Time indicates the time that the maximum UVR level occured for the day.
** Model Time indicates the time of the maximum forecast UVR level for the day (solar noon).
What the UV-Index means
Over exposure to ultraviolet radiation can cause short term health effects such as sunburn.
Long term exposure to ultraviolet radiation can increase the risk of damage to the skin and eyes which may result in skin cancers and cataracts.
UV-Index is a measure of the maximum daily level of ultraviolet radiation (UVR). When the UV level reaches 3 or higher a combination of five sun
protection measures (sun protective clothing, hat, sunglasses, sunscreen and shade) may be required for personal protection.
The UV-Index value indicates the maximum daily level of ultraviolet radiation (UVR) and is related to UVR exposure as follows:
| UV-Index Level | Exposure Category | Colour Code | Precautions |
| 2 or less | Low |  | You can safely stay outdoors with minimal protection. |
| 3 to 5 | Moderate |  | Wear sun protective clothing, a hat, sunscreen, sunglasses and seek shady areas. |
| 6 to 7 | High |  | As above. |
| 8 to 10 | Very High |  | As above. |
| 11 or higher | Extreme |  | As above. |
The UV-Index Chart
|
The chart shows both the measured UV-Index and the model for a particular day.
UVR measurements made by the ARPANSA detectors take into account cloud cover,
ozone levels and other environmental factors that computer models can only approximate.
The red line on the chart represents the UV-Index model.
A model is a forecast of the UVR levels for a clear sky day.
Ozone in the atmosphere varies on a daily basis and has an effect on UV levels.
The model is based on an ozone value that is an average of historical daily ozone values for each site.
UV levels may occasionally exceed the model due to differences between the averaged and actual ozone levels.
Unusual cloud conditions may also cause the measured UV-Index to exceed the model.
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 |
Further information about the UV-Index
Refer to the ARPANSA UV Resource Guide
and the ARPANSA UV-Index information sheet.
Information about UV models can be found on the Australian UV models page.
Refer to the ARPANSA UV information page for other presentations of UV information.
The World Health Organisation (WHO) publishes a Global solar UV index fact sheet.
The latest SunSmart UV Alert can be found at the Bureau of Meterology.
Further information about the SunSmart UV Alert can be found at SunSmart.
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Non Ionizing Radiation
 "Example of a UV-Index chart")
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