UV Index
UV Index
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Today's UV index in Mesa, United States 
will be up to 3.2, indicating moderate risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.
With a UV index reaching up to 3.2 in Mesa, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Read more here about the climate and sun exposure in and around Mesa.
The UV index in Mesa, United States, can be quite high, especially during the summer months. It often reaches levels of 10 or above, which is considered to be very high (31 or above in the UV index scale). This means that it is crucial to protect your skin from the harmful effects of the sun by wearing sunscreen, hats, and sunglasses, and by seeking shade whenever possible.
Mesa experiences four distinct seasons throughout the year. In the winter (December to February), temperatures can drop to an average low of around 4 °C (39 °F), while daytime temperatures reach around 18 °C (65 °F). Spring (March to May) brings mild and comfortable temperatures, with average lows around 10 °C (50 °F) and highs around 28 °C (82 °F). Summers (June to August) are hot, with temperatures soaring to an average high of about 39 °C (102 °F) during the day and around 26 °C (79 °F) at night. Fall (September to November) marks a transition period, with mild temperatures ranging from around 16 °C (60 °F) to 30 °C (86 °F).
Compared to its region, Mesa experiences abundant sunshine throughout the year. It enjoys more than 300 days of sunshine annually, making it an ideal place for outdoor activities and events. The region, known for its desert climate, also sees lower levels of humidity, making the heat more tolerable. However, this also means that the area is prone to droughts and dry conditions, which require careful water management and conservation efforts.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Mesa. It's designed to provide you with a better understanding of the yearly weather and sun exposure.