Climate & Environment in San dimas, CA
Updated 2026 • Air quality, water quality, CO2 emissions & energy costs
San dimas's average Air Quality Index is 3 — rated Good by EPA standards.
Understanding the Air Quality Index (AQI)
The AQI measures air pollution on a 0–500 scale. Lower is better. Here's how San dimas's air quality compares:
With an average AQI of 3, San dimas falls in the Good range. The area experienced 179 days with poor air quality over the past year, which is above average. The worst recorded AQI was 5.0, remaining within acceptable limits even at peak pollution.
Environmental Quality in San dimas, CA
Key environmental health indicators that affect daily life, outdoor activities, and long-term wellbeing for residents of San dimas.
CO2 Emissions Breakdown for CA
CA's total CO2 emissions are 324.0 million metric tons (8.3 tons per capita). This is below the US average of ~14 tons per person, reflecting a relatively cleaner energy profile.
Source: U.S. Energy Information Administration (EIA), 2021 data. Values in million metric tons of CO2.
⚡ Energy Costs in CA
Energy prices affect monthly household budgets and are an important factor when evaluating the cost of living in San dimas, CA.
Electricity prices in CA are above the national average. When budgeting for a move to San dimas, factor in slightly higher utility costs. Energy-efficient appliances and solar panel options may help offset this difference.
What San dimas's Environment Means for You
Air Quality: San dimas, CA enjoys good air quality with an average AQI of 3, well within EPA's "Good" range (0–50). Residents can expect safe conditions for outdoor exercise, gardening, and recreational activities year-round.
Water Quality: San dimas's drinking water scores 6/10. This is an acceptable rating, meaning the water supply generally meets safety standards. Some residents choose to use filtration for taste preferences. Moderate; stronger regulations improving standards.
Carbon Footprint: CA's per-capita CO2 emissions are 8.3 metric tons per year (total state emissions: 324.0 million metric tons). This is below the national average of ~14 tons, reflecting cleaner energy sources and progressive environmental policies in the state. San dimas residents benefit from a relatively low carbon footprint.
Energy Costs: Electricity in CA costs 32.99¢ per kWh, which is above the US average of 16.41¢/kWh. Households in San dimas should budget accordingly for higher utility costs.
San dimas, CA Environment Overview
What are environmental conditions like in San dimas, CA? The community has excellent air quality — averaging 3 on the AQI scale, which is well below concerning levels. Local water quality is 6/10. This page details climate factors, pollution sources, and environmental health indicators.
Environmental Pros & Cons of San dimas, CA
Pros
- •Active local events
- •Close to LA entertainment
- •Good schools nearby
- •Low crime rates
- •Friendly community
- •Diverse dining options
- •Great local parks
- •Job market improving
- •Family-friendly activities
- •Access to hiking trails
Cons
- •Hot summers, mild winters
- •Far from public transport
- •Traffic congestion issues
- •Limited nightlife options
- •Limited healthcare options
- •Less shopping variety
- •Not very walkable
- •Political tensions
- •High cost of living
- •Some areas lack diversity
Frequently Asked Questions
What is the cost of living in San dimas, CA? ▼
The cost of living in San dimas, CA is 0% equal to the national average, with a cost of living index of 100 (where 100 represents the U.S. average). Housing typically accounts for the largest portion of living expenses. See full cost of living breakdown →
Is San dimas, CA a safe place to live? ▼
San dimas, CA is average in terms of safety, with crime rates near the national average. Safety varies significantly by neighborhood. View detailed San dimas crime statistics →
What are the best neighborhoods in San dimas, CA? ▼
The best neighborhoods in San dimas, CA depend on your priorities. For families, look for areas near top-rated schools with lower crime rates. For affordability, neighborhoods vary in price depending on proximity to amenities and schools. Explore San dimas on our interactive map →
How are the taxes in San dimas, CA? ▼
Tax rates in San dimas, CA include state and local components. The cost of living index of 100 reflects a moderate cost environment compared to the national average. View detailed San dimas tax information →
How does San dimas, CA compare to nearby cities? ▼
San dimas, CA offers comparable costs to nearby communities. With a cost of living index of 100, median home prices of $0, and a crime rate of 0 per 1,000 residents, you can compare these metrics side-by-side. Use the compare feature to evaluate specific cities.
What is the weather like in San dimas, CA? ▼
Weather in San dimas, CA varies by season. Air quality is good, with an average AQI of 2. View detailed San dimas climate & environment data →
Explore More About San dimas, CA
📅 Last Updated: February 2026
Sources: EPA Air Quality System (AQS), U.S. Energy Information Administration (EIA), NOAA, U.S. Census Bureau