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Emergency Tree Services in Ontario, CA (2026)

Top 50 of 288 tree services, in emergency orderUpdated 0 paid placements in this rankingHow we rank

25 of the 50 tree services on this list post 24/7 hours. 24/7 businesses come first, then same-day, each ranked by CR Score with availability weighted higher.

Tree on a power line: stay 30 feet away and call your utility. Tree on the house: leave the affected rooms.

The short answer

  1. 1

    #1 for emergency tree service in Ontario: D&N Tree Care Inc, open 24/7.

Rankings can't be bought. Contractors can't pay to change their rank or score. How we rank

Top emergency tree services in Ontario at a glance

Top emergency tree services in Ontario at a glance
RankBusinessCR ScoreGoogle ratingBased inHours
1D&N Tree Care Inc644.9★ (52)Ontario24/7
2Melendez Tree Service635.0★ (85)Corona, 9 mi away24/7
3TNA Tree Service635.0★ (238)Claremont, 18 mi away24/7
4Environmental Green Tree Care/ Killelea Landscape625.0★ (267)Anaheim, 22 mi away24/7
5MCA Tree Service Inc624.9★ (70)Fontana, 10 mi away24/7
6Ortega's Jr Tree Care LLC614.8★ (81)Riverside, 13 mi away24/7
7Reg's Tree Service615.0★ (217)Fountain Valley, 24 mi away24/7
8Ezra Tree Service604.9★ (84)Corona, 16 mi away24/7
9Millen Tree Service605.0★ (24)Chino, 7 mi away24/7
10Tree Service of Rancho Cucamonga605.0★ (21)Rancho Cucamonga, 6 mi away24/7

Call an emergency tree service in Ontario now

24/7 hours mean the business says its phone is answered around the clock. Arrival time depends on where the crew is. Ask for an arrival window when you call.

The 50 emergency tree services in Ontario, ranked

24/7 first, then same-day service, then the rest. Each group is in CR Score order on emergency weights. The full ranking of all 288 is on the tree services page.

Scores below: based on 8 of 10 factors; credentials and recency not yet collected. Hatched segments mark factors we don't have yet.

  1. Ranked #1 in Ontario

    #1 D&N Tree Care Inc

    Based in Ontario

    64/100CR Score

    Ranked #1 because of its Google rating and trade focus: 4.9★ from 52 Google reviews, listed on Google as “Tree service”.

    • 4.9★ from 52 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    1448 E Elma Ct, Ontario, CA 91764
    View profile for D&N Tree Care Inc(909) 678-5193

  14. #14 Sana Junk Removal

    Based in Rialto, 16 mi away

    59/100CR Score

    Ranked #14 because of its Google rating and trade focus: 5.0★ from 46 Google reviews, listed on Google as “Tree service”.

    • 5.0★ from 46 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    19423 W Chaparral St, Rialto, CA 92376
    View profile for Sana Junk Removal(909) 441-8587

  16. #16 King's Tree Service

    Based in Pomona, 5 mi away

    59/100CR Score

    Ranked #16 because of its Google rating and trade focus: 4.9★ from 11 Google reviews, listed on Google as “Tree service”.

    • 4.9★ from 11 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    2232 Kathryn Ave, Pomona, CA 91766
    View profile for King's Tree Service(626) 221-6471

  17. #17 MTZ Tree Service

    Based in Montclair, 2 mi away

    59/100CR Score

    Ranked #17 because of its Google rating and trade focus: 4.4★ from 7 Google reviews, listed on Google as “Tree service”.

    • 4.4★ from 7 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    10278 Del Mar Ave, Montclair, CA 91763
    View profile for MTZ Tree Service(909) 418-8661

  18. #18 Favor Tree Care

    Based in Anaheim, 23 mi away

    59/100CR Score

    Ranked #18 because of its Google rating and trade focus: 5.0★ from 69 Google reviews, listed on Google as “Tree service”.

    • 5.0★ from 69 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    510 N Wedgewood Dr, Anaheim, CA 92801
    View profile for Favor Tree Care(714) 395-9495

  25. #25 Alex Tree Service

    Based in Azusa, 16 mi away

    58/100CR Score

    Ranked #25 because of its Google rating and trade focus: 5.0★ from 21 Google reviews, listed on Google as “Tree service”.

    • 5.0★ from 21 Google reviews
    • Open 24/7
    Hours
    Open 24 hours, 7 days
    Address
    547 N Barbara Ave, Azusa, CA 91702
    View profile for Alex Tree Service(626) 804-4491

Top 50 of 288 tree services by emergency score

#1 to #25 are shown in full above. Here are #26 to #50, in CR Score order; each links to its profile.

tree services in Ontario, ranks 26 to 50
RankBusinessCR ScoreGoogle ratingDistance
26H & E Tree Service585.0★ (23)18 mi
27Garcias 4 seasons tree service574.8★ (12)12 mi
28Lucero General Landscaping575.0★ (14)14 mi
29MTS Landscape574.8★ (16)14 mi
30Nature's Tree Service574.7★ (18)15 mi
31Advance Tree Service574.2★ (5)5 mi
32Paez Tree Service574.7★ (44)23 mi
33True Star Tree Service Fontana575.0★ (9)11 mi
34M&M Tree Service Inc.575.0★ (21)18 mi
35Electrician Tree In Diamond Bar574.9★ (42)9 mi
36Valley Tree Care574.5★ (26)18 mi
37A1 TREE CORP574.4★ (34)5 mi
38Alex's Tree Service574.2★ (5)7 mi
39Alfonsos Tree Service574.3★ (22)17 mi
40ACL Tree Works LLC575.0★ (36)25 mi
41GNZ Tree Experts INC574.8★ (24)20 mi
42C&A Tree Care Services Inc574.7★ (39)24 mi
43Forever Green S&G Tree Service575.0★ (34)25 mi
44Atilanos Junk Removal & Tree Trimming575.0★ (6)11 mi
45Davidson tree service565.0★ (11)16 mi
46Paez Tree Care562.3★ (3)4 mi
47Lucero Tree Service564.1★ (13)15 mi
48A & S Tree Service565.0★ (23)23 mi
49So Cal Tree Trimming Inc.565.0★ (25)24 mi
50Think Green Tree Care Inc.564.9★ (64)16 mi

How we ranked emergency tree services in Ontario

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 tree services are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

Paid placement never changes a rank or score. Featured businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.

Read the full method: formula, sources and exclusions

CR Score factors and weights
FactorWeightComputed from
Reputation15%Google star rating, adjusted for how many reviews back it
Credentials15%Active state license, bond and workers’ comp on file
Review volume10%Number of Google reviews, compared with the most-reviewed business on the list
Recency5%Share of reviews from the last 12 months
Availability15%Weekly open hours, Saturday, Sunday, 24/7 or same-day
Trade focus10%How clearly the business does this trade (its Google category and name)
Proximity5%Based in the city scores highest, less the farther away it is
Claimed profile10%The business has claimed its ContractorsRanked profile (free or paid earn the same)
Partnered5%The business links to ContractorsRanked from its own website with our badge, checked periodically
ContractorsRanked reviews10%Verified customer reviews collected by ContractorsRanked: their rating and how many there are

Emergency tree services in Ontario: questions

Which tree services in Ontario are open 24/7?

25 on this list post 24/7 hours, including D&N Tree Care Inc, Melendez Tree Service, TNA Tree Service, Environmental Green Tree Care/ Killelea Landscape and MCA Tree Service Inc.

Who is ranked #1 for emergency tree service in Ontario, CA?

D&N Tree Care Inc is #1, with a CR Score of 64 out of 100 on emergency weights.

How are emergency tree services in Ontario ranked?

Emergency lists move 10 points of the CR Score from reputation to availability: 15% and 15%. Availability credits 24/7 hours, same-day service, weekend hours and weekly open hours. 24/7 tree services are listed first, then same-day, then the rest; ranks follow that order. Paid placement never changes a rank.

What should I do before the tree service arrives?

Tree on a power line: stay 30 feet away and call your utility. Tree on the house: leave the affected rooms.

How many emergency tree services here list a phone number?

25 of the 25 businesses ranked in full list a phone number. Tap Call to dial it.

Update log for Ontario

  1. October 2026: CR Scores recalculated for 288 tree services serving Ontario.
  2. October 2026: 7 duplicate listings merged.

More emergency and tree service pages