Each edition grades its towns against each other only.
Photo: David Jordan · CC BY-SA 3.057% of Monrovia’s land is conserved, about 4,961 acres. 29 miles of mapped trail cross Monrovia, 2.1 per square mile of land. 1,693 acres are parks and preserves, 45 per 1,000 residents.
Ahead of 98% of U.S. towns · #58 of 847 in California. What drives it
Read from the map. The page puts what stands out first.
On conserved land, trails, park land and how close residents live to a park, Monrovia is ahead of 98% of U.S. towns, #58 of 847 in California. All four inputs are above most U.S. towns; conserved land ranks highest, the share of residents near a park lowest.
PAD-US, OpenStreetMap (© OpenStreetMap contributors), Census 2025 Gazetteer and 2020 blocks; details in Sources below. How TownRatings grades the outdoors →
Tap a number to zoom to a park. Tap a layer to hide it.
The longest trail network is San Gabriel Mountains National Monument, with 10.9 miles. Directions go to the nearest trailhead or public parking.
57% of Monrovia’s land. Who manages Monrovia’s conserved land, from the USGS Protected Areas Database. Approximate, because parcels can overlap.
| Parcel (PAD-US) | Managed by | Acres | Public access |
|---|---|---|---|
| Angeles National Forest National Forest | U.S. Forest Service | 3,013 | Open |
| Monrovia Wilderness Preserve Local Conservation Area | Town or city | 1,121 | Open |
| Unnamed site - Monrovia, City of Local Other or Unknown | Town or city | 435 | Open |
| Canyon Park, Boy Scouts of America Private Conservation | Land trusts & nonprofits | 158 | Open |
| Arcadia Wilderness Park Local Conservation Area | Town or city | 98 | Open |
| Canyon Park Local Park | Town or city | 80 | Open |
| Los Angeles County Flood Control District Open Space Local Other or Unknown | Regional agency | 63 | Closed |
| Recreation Park Local Recreation Area | Town or city | 19 | Open |
| Monrovia Library Park Local Park | Town or city | 4 | Open |
| Lucinda Garcia Park Local Park | Town or city | 2 | Open |
5 smaller protected places aren’t shown.
Beaches, playgrounds, peaks, falls and more. Pick a kind.
Plus 3 playgrounds without a name on the map. Tap “Show all on map” to see them.
Plus 1 waterfall without a name on the map. Tap “Show all on map” to see it.
Bike lanes are often missing from the map in smaller towns, so that number is likely low.
Includes school and college facilities, which aren’t always open to the public.
The country’s official list of places worth saving (National Park Service). The map also marks 1 historic points from OpenStreetMap: plaques, memorials and old buildings.
NOAA’s 1991–2020 normals for the town and the daylight at its latitude. Outlined months have long days, highs of 59 to 86 °F and little rain for the place.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 10.1 | 10.9 | 11.9 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.3 | 11.3 | 10.3 | 9.9 |
| High (°F) | 68 | 69 | 72 | 75 | 78 | 84 | 90 | 91 | 89 | 82 | 74 | 67 |
| Rain (in) | 4.3 | 4.8 | 2.7 | 1.1 | 0.5 | 0.1 | 0.0 | 0.0 | 0.2 | 0.7 | 1.2 | 2.9 |
August is the driest month (under 0.1 in) and the warmest (highs of 91 °F). 4.8 inches fall in February, the wettest month. Summer highs reach 91 °F, too hot for the outline. The climate in Monrovia →
Monrovia has the most mapped trails of the 6 towns around it. Tap a town to see its outdoors.
| Town | Conserved of land | Trail mi per sq mi | Park acres per 1,000 | Near a park ½ mile | Outdoors |
|---|---|---|---|---|---|
| Monrovia | 57% | 2.1 | 45 | 93% | A+ |
| Arcadia | 8% | 0.9 | 5 | 95% | B+ |
| Mayflower Village | 1% | 0.3 | 1 | 88% | C |
| South Monrovia Island | 1% | under 0.1 | under 1 | 99% | C− |
| Duarte | 55% | 0.9 | 22 | 99%+ | A+ |
| Irwindale | 17% | 2.6 | 1,092 | 98% | A+ |
The four inputs of the Outdoors grade, from the engine; shares are of land, not water.
The longest trail networks: San Gabriel Mountains National Monument, 10.9 miles; Monrovia Hillside Wilderness Preserve, 9.8 miles; Monrovia Open Space, 1.6 miles; Arcadia Wilderness Park, 0.8 miles. Each one is on the map above, with directions to the nearest trailhead or parking.
57% of its land, against a typical 4% for a California town and 4% nationally (PAD-US). Conserved doesn’t always mean open to visitors: easements are usually private land.
OpenStreetMap records dogs as welcome at Monrovia Open Space (on leash). For the rest, check the signs at the trailhead.
12 miles of bike routes are on the map: 1.6 of painted or protected lanes and 10 of shoulders and shared lanes.
17,539 acres of parks and open public land lie inside Monrovia or within 10 miles of it (PAD-US), 1,693 of them inside the city line.
Ahead of 98% of U.S. towns on the Outdoors grade, #58 of 847 in California. The grade combines the share of land that is conserved, miles of mapped trail per square mile of land, park acres per 1,000 residents and the share of residents within a half mile of a park. It’s a character grade, so it isn’t part of the overall grade. How it works.
Conditions, parking and favorite walks from Monrovia neighbors.
Conserved and public land: USGS Protected Areas Database of the United States (PAD-US), service updated July 2026. Parks, trails, playgrounds, beaches and other places: OpenStreetMap (© OpenStreetMap contributors, ODbL), map data as of 2026-10-28. Land and water area: Census 2025 Gazetteer. Residents near a park: 2020 Census blocks. National Register: National Park Service. How TownRatings grades the outdoors →