Alma, Colorado Air Quality
Alma has a median AQI of 50, earning an air quality grade of B+ — good air quality that ranks better than 14% of US cities. Air quality has remained relatively stable over the past decade. Ground-level ozone is the primary concern, typically peaking on warm sunny days due to vehicle and industrial emissions. In 2024, Alma recorded 172 good air quality days (53% of monitored days) and 12 unhealthy days.
Population: 385 • County: Park
Loading AQI…
Quick Facts
| Current AQI | 4 — Good |
| Air Quality Grade | B+ |
| Median AQI (2024) | 50 |
| vs. U.S. Cities | Better than 14% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 12 |
| 10-Year Trend | → Stable |
| Data Source | EPA AirNow |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 30 Days
Current Pollutant Levels
Real-time data from EPA AirNow
AQI Trend (10 Years)
Air Quality Days by Year
2024 Air Quality Summary
Primary Pollutant Days (2024)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Alma Air Quality
What is the air quality in Alma today?
The current AQI in Alma is 4, which is rated "Good". Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Alma getting better or worse?
Air quality in Alma has remained relatively stable over the past decade, with a median AQI of around 50.
What is the most common air pollutant in Alma?
Ozone is the primary air pollutant in Alma, responsible for the most air quality-impacted days in 2024. Ground-level ozone forms when sunlight reacts with vehicle and industrial emissions on warm days.
How many unhealthy air days does Alma have per year?
In 2024, Alma had 12 days when air quality was unhealthy or unhealthy for sensitive groups (AQI above 100). There were 172 good days and 139 moderate days out of 323 days monitored.
What air quality grade does Alma receive?
Alma receives an air quality grade of B+, placing it better than 14% of US cities. This grade is based on a median AQI of 50 for 2024, derived from EPA monitoring data.
Air Quality Grade
Better than 14% of US cities
Nearby Cities
Get AQI Alerts
Receive notifications when air quality changes in Alma
National Rankings
See how Alma compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Alma
Based on your area's air quality (median AQI: 50), we recommend these air purifiers to help protect your health indoors.
RabbitAir MinusA2
Stylish wall-mountable design with customizable artwork panels.
- ✓Adequate for room size
- ✓Recommended for your air quality
We may earn a commission from purchases
Other Great Options
Molekule Air Pro
Commercial-grade with patented PECO technology for destroying pollutants.
Honeywell HPA300
Powerful workhorse for large rooms. Built to last.
Blueair Blue Pure 211+
High performance for large rooms with simple operation.
Not sure which air purifier is right for you?
Learn more about different types of air purifiers and how to choose the best one for your needs.
Read our complete buying guide →