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Maricopa County Parks and Recreation: Usery – Invasive Species Removal

Usery Mountain Regional Park 3939 N. Usery Pass Rd., Mesa

Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Participants will learn to identify several invasive species, their phenology...

Free with Park Fee

Maricopa County Parks and Recreation: White Tank – Invasive Species Removal

White Tank Mountain Regional Park 20304 W. White Tank Mountain Rd., Waddell

Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Participants will learn to identify several invasive species, their phenology...

Free with Park Fee

Maricopa County Parks and Recreation: McDowell – Invasive Species Removal

McDowell Mountain Regional Park 16300 McDowell Mountain Park Dr. MMRP, Fountain Hills

Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Participants will learn to identify several invasive species, their phenology and characteristics, and how to remove these invasive plants effectively.  Meet at the Nature Center. The goal is to remove invasive plants as a proactive...

Free with Park Fee

Arizona State University: Earth Day Stadium Walk 2026

Mountain America Stadium 500 E. Veterans Way, Tempe

Join University Sustainability Practices and SRP for the free ASU Earth Day Walk at Mountain America Stadium. This unique celebration of sustainability includes a three lap walk around the stadium...

Free

Children’s Museum of Phoenix: Earth Day Expo

Children's Museum of Phoenix 215 N. 7th St., Phoenix

Join us in the Children’s Garden for fun and educational outdoor activities in celebration of Earth Day! Wednesday, April 22nd from 9am-1pm. HANDS-ON PROGRAMS INCLUDE: Compost Corner – Explore the world...

Free with Admission

Maricopa County Parks and Recreation: City Nature Challenge Practice Hike

Estrella Mountain Regional Park 14805 W. Vineyard Ave., Goodyear

Learn about the April 24-27 City Nature Challenge and free smartphone apps that can help you identify plants, animals, and more, while helping contribute to science!   Join Ranger Eric on...

Free with Park Fee

Earth Day 2026: The future we build

Rob and Melani Walton Center for Planetary Health (Walton Center) 777 E. University Dr., Tempe

The Julie Ann Wrigley Global Futures Laboratory® invites you to celebrate Earth Day by exploring the future we build. Since 2021, GFL has served as Arizona State University’s hub for Earth Day....

Free

Earth Day 2026: The future we build

Rob and Melani Walton Center for Planetary Health (Walton Center) 777 E. University Dr., Tempe

The Julie Ann Wrigley Global Futures Laboratory® invites you to celebrate Earth Day by exploring the future we build. Since 2021, GFL has served as Arizona State University’s hub for Earth Day. This year, we will celebrate Earth Day featuring an afternoon designed to connect our community, spark ideas and showcase pathways to a thriving planet. Starting...

Free

Arizona State University: Earth Day 2026 – The Future We Build

Rob and Melani Walton Center for Planetary Health 777 E. University Dr., Tempe

The Julie Ann Wrigley Global Futures Laboratory® invites you to celebrate Earth Day by exploring the future we build. Since 2021, GFL has served as Arizona State University’s hub for Earth Day....

Free

Mesa Public Library: Earth Day Animal Spot-A-Thon

Mesa Public Library - Gateway Branch 5036 S. Eastmark Pkwy., Mesa

Celebrate Earth Day by helping scientists monitor wildlife! In this hands-on event, you’ll explore trail camera photos and help classify the animals you see. Your contributions support a NASA-supported research...

Free

Mesa Public Library: Mason Jar Beehives for Earth Day

Brady Park 7045 E. Monterey Ave., Mesa

Celebrate Earth Day with a creative, hands-on activity! Kids will make their own Mason Jar Beehives while learning why bees are so important to our planet. This craft introduces young...

Free

Maricopa County Library District: Fearless Kitty Rescue

MCLDAZ - Fountain Hills Branch 12901 N. La Montana Dr., Fountain Hills

Learn of the great work performed by Fearless Kitty Rescue in our community. Support their efforts by making upcycled cat toys.

Free

Desert Foothills Land Trust: 35th Anniversary Celebration

Sanderson Lincoln Pavilion 101 Easy St, Carefree

Help us celebrate 35 years of conservation success at our Earth Day Fundraising Dinner!​ ​ Mark this milestone with an evening of exceptional food, music, and community as we honor...

$250