Weather Data Source: sharpweather.com

Tucson sustainability

Faint auroras seen over Tucson during solar activity
Events/What's Happening

Solar Activity Spikes in Tucson

Tucson, October 21, 2025 On October 20, Tucson experienced significant solar activity as two M-class flares erupted from sunspot region AR3664. This resulted in moderate geomagnetic

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HERE Tucson

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