| June 1998 | Tornado (F1) | Quincy | 1 hurt | no account filed |
| May 1996 | Thunderstorm Wind | Quincy | $35,000 | no account filed |
| May 2025 | Flash Flood | Quincy | $25,000 | An emergency manager reported a subject stuck in her car in a foot of flood water between 12th Street and 18th Street on Seminary Road. |
| October 2024 | Tornado (EF0) | Quincy | $25,000 | An EF-0 tornado formed at 1130pm CDT just east of South 24th St. off of Lake Dr. North. As it quickly moved eastward, it produced sporadic tree damage and then minor structural in Payson Heights. From there, it continued eastward, producing sporadic tree damage, including several trees uprooted or snapped, before dissipating at Schildt Ln. The tornado had a path length of 0.35 miles and a max path width of 100 yards. No deaths or injuries were reported. |
| April 2025 | Tornado (EF0) | North Quincy | $20,000 | A weak tornado began near the intersection of Highways 172 and 57, and traveled roughly 4.2 miles to the northeast before dissipating. Damage to trees was most common, with some damage to bleachers as well. The tornado was rated EF-0 with a path length of 4.18 miles and a maximum path width of 25 yards. |
| July 2025 | Thunderstorm Wind | Quincy | $20,000 | Thunderstorm winds caused a large tree limb to snap and fall onto a vehicle. |
| August 2002 | Lightning | Quincy | $20,000 | A lightning strike was responsible for a fire at a home east of Quincy. The lighting struck an enclosed porch on the south side of the house and quickly spread to the kitchen. |
| May 2007 | Thunderstorm Wind | Quincy | $15,000 | Power lines were reported down at 5 locations in Quincy. |
| May 2024 | Thunderstorm Wind | Quincy | $10,000 | Broadcast media relayed reports of medium sized tree branches snapped. There was also a report of power poles broken. Both reports are from the south side of Quincy. |
| April 1994 | Thunderstorm Wind | Quincy | $5,000 | A local television station reported hail 0.75 inch in diameter and wind gusts to 55 mph. Minor damage to a building was reported. |
| June 1994 | Thunderstorm Wind | Quincy | $5,000 | The county sheriff reported numerous trees down north of Quincy. Trees and power lines were also blown down across much of the city of Quincy between 1315 and 1330 CST. |
| August 1993 | Thunderstorm Wind | Quincy | $5,000 | The public and county sheriff reported downed power lines and poles. |
| September 1993 | Thunderstorm Wind | Quincy | $5,000 | no account filed |
| June 1994 | Thunderstorm Wind | Quincy | $500 | The county sheriff reported numerous trees down north of Quincy. Trees and power lines were also blown down across much of the city of Quincy between 1315 and 1330 CST. |
| June 1994 | Thunderstorm Wind | Quincy | $50 | Tree limbs larger than four inches in diameter were broke off. |
| August 2025 | Thunderstorm Wind | Quincy | - | A resident of Adams County reported a 65 mph wind gust. |
| July 2025 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down trees and powerlines around Quincy. |
| July 2023 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down a couple of trees and numerous tree limbs around the northern half of Quincy. |
| June 2023 | Thunderstorm Wind | Quincy | - | Thunderstorm winds snapped off a large tree in town. Also, numerous tree limbs were blown down. |
| June 2023 | Hail | Quincy | - | Large hail up to two inches in diameter fell across Quincy. |
| June 2020 | Thunderstorm Wind | Quincy | - | Several dozen power lines were blown down around town. |
| June 2020 | Flash Flood | Quincy | - | Up to 4.5 inches of rain fell in a 2 to 3 hour period, causing flash flooding in Quincy. Water levels in some areas was between 3 and 4 feet deep which caused a number of roads to be washed out. Blessing Hospital sustained minor flood damage when water flooded parts of the basement and first floor. Also, numerous basements in other buildings were flooded. Five water rescues were performed after vehicles became trapped in flood waters. No injuries were reported. |
| July 2019 | Thunderstorm Wind | Quincy | - | Thunderstorm winds snapped off a large tree which then fell onto a garage destroying it as well as the car that was parked in it. A nearby home sustained moderate roof damage. The tree also pulled down a nearby power line. |
| June 2019 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down a large tree at the intersection of 22nd Street and Washington Street. |
| May 2018 | Thunderstorm Wind | Quincy | - | A large tree was blown down at the intersection of 24th Street and Maine Street. |
| June 2018 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down 3 trees between 5th and 8th Streets. Also, a large tree was blown down onto a house near the intersection of South 24th Street and Payson Road. |
| August 2016 | Flash Flood | Quincy | - | Up to 5 inches of rain fell in two and a half hour timeframe causing flash flooding around town. Several water rescues had to be performed but no injuries were reported. |
| July 2016 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down numerous trees and tree limbs, especially on the south and southeast side of Quincy. One large tree fell onto a house on the southeast side of town causing moderate damage. Numerous tree limbs were blown down in Coatsburg. |
| December 2015 | Hail | Quincy | - | A wide swath of one to one and a half inch hail fell across Quincy. |
| June 2015 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down a couple of trees and tree limbs on the north side of Quincy. One large tree on 6th Street between Spruce and Sycamore Streets fell onto a telephone pole knocking it down as well. |
| July 2015 | Thunderstorm Wind | Quincy | - | A wide swath of damaging winds occurred across the south half of Adams County. Numerous trees, tree limbs, power poles and power lines were blown down in Quincy, Coatsburg, Payson, Plainville and Liberty. In Quincy, several unoccupied vehicles were destroyed by fallen trees. Also, numerous homes and businesses in town sustained minor to major damage from trees falling on them. A couple of older brick facade buildings were damaged or destroyed by the winds. No injuries were reported. |
| June 2014 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down numerous large tree limbs and some windows on businesses on the east side of Quincy. |
| June 2013 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down several large tree limbs and power lines around town. |
| April 2013 | Thunderstorm Wind | Quincy | - | Thunderstorms winds caused a wide swath of damage extending from downtown Quincy near the Mississippi River eastward to Quincy Regional Airport. Numerous power lines and tree limbs as well several trees were blown down around town. One building had a portion of a wall peeled off at the intersection of Broadway and 48th Street. A bank at the intersection of Koch's Lane and 24th Street had minor roof damage. An 18 foot long construction trailer was blown south through the front wall of a Staples store on Broadway Street across from the mall. A restaurant near the airport sustained moderate damage. |
| July 2012 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down several large trees and took some shingles off of a few roofs. |
| June 2011 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down a number of large trees and power lines around town. |
| June 2011 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down numerous large tree limbs around town. |
| June 2011 | Flash Flood | Quincy | - | Between 3 and 4 inches of rain fell in a short amount of time causing flash flooding. Several roads were flooded including County Road 1900E just south of Illinois Route 104. |
| June 2011 | Thunderstorm Wind | Quincy | - | Thunderstorm winds uprooted a couple of trees and knocked down some power lines in town. On large tree landed on an unoccupied truck destroying it. |
| February 2011 | Hail | Quincy | - | A wide swath of three quarter to one inch hail was reported from Quincy through the Camp Point area to between Golden and Clayton. |
| June 2011 | Thunderstorm Wind | Quincy | - | An intense bow echo moved through Quincy blowing down hundreds of trees, tree limbs and power lines. The fallen trees, tree limbs and power lines blocked a lot of streets in town causing major navigation issues for drivers for several days. It also took several days to restore power throughout town. Numerous trees fell onto homes causing varying degrees of damage. Also, several vehicles sustained varying degrees of damage from fallen trees and limbs. Amazingly no injuries were reported. |
| July 2010 | Thunderstorm Wind | Quincy | - | A large tree was blown down across the southbound lanes of I-172 just north of the city limits. |
| August 2010 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down a tree onto a house causing minor to moderate damage. |
| August 2009 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down numerous large tree limbs over the southern portions of the county. |
| June 2009 | Thunderstorm Wind | Quincy | - | Thunderstorm winds caused structural damage to a three story brick building in downtown Quincy. The entire brick wall on the back of the building blew down and fell onto cars in the parking lot. No injuries were reported. Also, a retirement community building had several windows blown out and numerous trees, tree limbs and power lines were blown down. |
| June 2009 | Thunderstorm Wind | Quincy | - | Numerous trees, tree limbs and power lines were blown down around Quincy. |
| July 2008 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down several trees, numerous tree limbs and power lines throughout town. |
| May 2008 | Hail | Quincy | - | Storm spotters reported hail from nickel size to one inch. |
| March 2007 | Thunderstorm Wind | Quincy | - | Thunderstorm winds blew down several business signs and broke several windows in Quincy, including some at Quincy Mall. |
| June 2007 | Thunderstorm Wind | Quincy | - | Adams County EMA reported a car blown off a road near the eastern city limits of Quincy. |
| August 2007 | Thunderstorm Wind | Quincy | - | Numerous large tree limbs were blown down throughout the city. |
| October 2007 | Tornado (EF0) | North Quincy | - | A tornado briefly touched down in a field just northeast of the intersection of CR 1000E and CR 200N. The corn field was totally flattened. |
| August 2007 | Flood | Quincy | - | Minor flooding occurred along the Mississippi River. The river peaked at about 1 1/2 feet over flood stage. |
| April 2006 | Thunderstorm Wind | Quincy | - | A tractor-trailer was blown over at I-72 and I-172. |
| April 2006 | Thunderstorm Wind | Quincy | - | A local TV station reported several barns damaged. |
| May 2006 | Thunderstorm Wind | Quincy | - | Several large trees and power poles were blown down on the east side of town. |
| May 2005 | Hail | Quincy | - | A local TV station relayed reports of 3/4 inch hail north of Quincy. |
| June 2005 | Hail | Quincy | - | A storm spotter reported 1 inch hail. |
| May 2004 | Thunderstorm Wind | Quincy | - | The local 911 center reported trees and power lines down at several locations. |
| May 2004 | Thunderstorm Wind | Quincy | - | Local law enforcement reported numerous trees and power lines down. |
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