Climate & Environment in Thornton, CO
Updated 2026 • Air quality, water quality, CO2 emissions & energy costs
Thornton's average Air Quality Index is 2 — 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 Thornton's air quality compares:
With an average AQI of 2, Thornton falls in the Good range. The area experienced 99 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 Thornton, CO
Key environmental health indicators that affect daily life, outdoor activities, and long-term wellbeing for residents of Thornton.
CO2 Emissions Breakdown for CO
CO's total CO2 emissions are 85.4 million metric tons (14.4 tons per capita). This is near the US average of ~14 tons per person, typical for states with a diverse energy mix.
Source: U.S. Energy Information Administration (EIA), 2021 data. Values in million metric tons of CO2.
⚡ Energy Costs in CO
Energy prices affect monthly household budgets and are an important factor when evaluating the cost of living in Thornton, CO.
Residents of CO benefit from electricity prices that are 16.4¢ – 15.2¢ = lower than the national average. This means lower monthly utility bills compared to many other states, making Thornton more affordable for energy-intensive households.
What Thornton's Environment Means for You
Air Quality: Thornton, CO enjoys good air quality with an average AQI of 2, well within EPA's "Good" range (0–50). Residents can expect safe conditions for outdoor exercise, gardening, and recreational activities year-round.
Water Quality: Thornton'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. Good quality; few concerns present.
Carbon Footprint: CO's per-capita CO2 emissions are 14.4 metric tons per year (total state emissions: 85.4 million metric tons). This is near the national average of ~14 tons per capita, typical for states with a mix of renewable and fossil fuel energy sources.
Energy Costs: Electricity in CO costs 15.21¢ per kWh, which is below the US average of 16.41¢/kWh. This translates to lower monthly utility bills for Thornton residents.
Thornton, CO Environment Overview
Thornton, CO offers excellent air quality for residents, with AQI readings averaging 2 (well below concerning levels). Water quality is 6/10. Understanding these environmental factors is essential for anyone considering this area as home.
Environmental Pros & Cons of Thornton, CO
Pros
- •Friendly community vibe
- •Growing nightlife options
- •Affordable living costs
- •Vibrant local events
- •Strong schools in area
- •Diverse population
- •Multiple parks for kids
- •Access to nearby mountains
- •Good job opportunities
- •Easy commutes to Denver
Cons
- •Occasional racism issues
- •Some schools underperforming
- •Weather can be unpredictable
- •Economic disparities noted
- •Higher crime rates reported
- •Traffic congestion during rush
- •Limited cultural activities
- •Limited public transport options
- •Less nightlife than Denver
- •Budget constraints in city
Frequently Asked Questions
What is the cost of living in Thornton, CO? ▼
The cost of living in Thornton, CO 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 Thornton, CO a safe place to live? ▼
Thornton, CO is average in terms of safety, with crime rates near the national average. Safety varies significantly by neighborhood. View detailed Thornton crime statistics →
What are the best neighborhoods in Thornton, CO? ▼
The best neighborhoods in Thornton, CO 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 Thornton on our interactive map →
How are the taxes in Thornton, CO? ▼
Tax rates in Thornton, CO include state and local components. The cost of living index of 100 reflects a moderate cost environment compared to the national average. View detailed Thornton tax information →
How does Thornton, CO compare to nearby cities? ▼
Thornton, CO 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 Thornton, CO? ▼
Weather in Thornton, CO varies by season. Air quality is good, with an average AQI of 2. View detailed Thornton climate & environment data →
Explore More About Thornton, CO
📅 Last Updated: February 2026
Sources: EPA Air Quality System (AQS), U.S. Energy Information Administration (EIA), NOAA, U.S. Census Bureau