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It's a very, very old CCD sensor (15+ years), so that might be the best you can get. I looked at a few SX110 photos in Flickr and it's about the same.
I would lean into it. There's a small but enthusiastic niche of photography with these older CCD sensors and the character they bring.
If you want tack sharpness, that standard will usually be set by the latest and greatest. If you want character, older is sometimes better.
My old CCD-based DSLR would start showing noticeable noise at ISO 800, and a smaller sensor could be worse. Sunrise/sunset can be deceptively dark; I would check the files' EXIF info to see what the ISO was. If you're on Windows, the file property should have a Details tab that lists the major EXIF data. You could take a couple pics, some with noticeable noise, some without, and see if there is a correlation with ISO values, and see if there is an ISO value threshold.