Daily Brief
October 5, 2026
Monday
🏛️ Government
Voter registration deadline is 11:59 p.m. tonight. Arizonans who want to vote in the Nov. 3 general election must register by 11:59 p.m. Monday. Voters who have moved, changed their name or want to switch parties must submit a new registration form. Residents can check their status on the Pima County Voter Dashboard, KVOA reported.
Early voting begins Wednesday, Oct. 7, when early ballots go out in the mail, according to KVOA. Pima County ballots include the competitive CD6 race between U.S. Rep. Juan Ciscomani and Democrat JoAnna Mendoza, statewide and legislative contests, school board races, eight statewide propositions, and local measures, according to the Tucson Sentinel.
Marana weighs new drought-plan triggers as Colorado River cuts loom. As we reported from the Sept. 15 Marana Town Council meeting, town staff said Marana is operating as if in Stage 2 drought and faces a 14% Colorado River cut in 2027, and they recommended new drought triggers. The town's four-stage plan was adopted in 2023 and is tied to local groundwater levels and Lake Mead elevations, according to Inside Tucson Business. Marana is officially under Stage 1, which asks customers to cut water use voluntarily.
Tucson Daily Brief, Inside Tucson Business
Chiricahua National Monument closer to national park status. A bill to redesignate Chiricahua National Monument in Cochise County as a national park awaits President Trump's signature, according to AZPM. Rep. Juan Ciscomani has sought the redesignation three times, AZPM reported. If the bill is signed, the monument, established in 1924, would become Arizona's fourth national park.
🏗️ Development & Business
South32 Hermosa mine wins key federal approval. The U.S. Forest Service has signed the final Mine Plan of Operation for South32's Hermosa project in Santa Cruz County, according to the Nogales International. The approval clears the way for the mine's next steps.
Researchers say data centers are not driving Colorado River cuts. Researchers told Inside Tucson Business that data centers are not the cause of the current Colorado River shortage. They also said water-use figures for individual facilities remain hard to pin down.
"They are growing and they're growing fast," said Rhett Larson, an Arizona State University water law professor. "They do use a lot of water." Arizona has 113 data centers in operation, and only seven states have more operating or planned, according to U.S. Data Center Map figures cited in the story.
Amazon launches Colorado River conservation fund. Amazon is launching a Colorado River Basin Collaborative with the Water Resilience Coalition. The effort aims to raise $100 million for water conservation, including $20 million of Amazon's own money, according to Inside Tucson Business. Marana gets about 15% of its water from the basin through the Central Arizona Project.
🎉 Community & Events
Salvation Army seeks 5,000 pairs of socks for unhoused residents. The Salvation Army Tucson's fourth annual Socktober Drive runs through Oct. 31, according to Inside Tucson Business. The drive is collecting new men's, women's and children's socks, plus protective dog booties. Adult medium and large are the most requested sizes.
📢 What Your Officials Are Saying
Sen. Mark Kelly (U.S. senator). Kelly said in a Bluesky post that he and Chris Pappas of New Hampshire are pushing to suspend federal gas and diesel taxes. He attributed rising fuel prices to President Trump.
Sen. Mark Kelly (U.S. senator). Kelly posted that he was inducted into the International Space Hall of Fame on Oct. 3. He was inducted alongside his brother and others, including Katherine Johnson and the Mercury 13.
Campaigns. Neither side of the governor's race posted in the past 48 hours: Katie Hobbs' and Andy Biggs' campaigns were both silent. Neither did the CD6 campaigns of JoAnna Mendoza and Juan Ciscomani.
🌵 The Desert Today
Heat: Oct. 3 high 90° (normal 90°, record 103°), low 71°. 77 days at or above 100° so far this year. Water: Lake Mead 1,037.9 ft on Oct. 3, down 20.1 ft in a year. Sky: air quality 42 (good), highest reading ozone. UV index 8. Power: TEP demand peaked at 2,080 MW on Oct. 2, solar peak 599 MW.
Life in the Desert: the season against prior years, and the long record
⛈️ Weather — Tucson
Today: Sunny, with a high near 94. East wind 7 to 17 mph.
Tonight: Mostly clear, with a low around 72. East wind 8 to 12 mph, with gusts as high as 22 mph.
Tuesday: Sunny, with a high near 94. Northeast wind 2 to 12 mph. Mostly clear Tuesday night, with a low around 71.
Outlook: Dry, sunny weather continues through the week. Highs will run in the mid-90s, peaking near 96 on Wednesday, and overnight lows will hold near 72. Thursday is forecast to be sunny with a high near 95.
NWS Tucson Forecast API
This brief was generated automatically by Claude Opus 5.5 from a review of 22 of 39 local sources fetched, at 6:02 AM MST on October 5, 2026, and published without human review. Every item links to its source. Read more about how this is made.
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