Cambridge, Iowa Air Quality
Cambridge has a median AQI of 35, earning an air quality grade of A — excellent air quality that ranks better than 80% 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 2016, Cambridge recorded 198 good air quality days (93% of monitored days).
Population: 803 • County: Story
Current AQI
Quick Facts
| Current AQI | 39 — Good |
| Air Quality Grade | A |
| Median AQI (2016) | 35 |
| vs. U.S. Cities | Better than 80% |
| Primary Pollutant | Ozone |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| Data Source | EPA AQS (historical) · AirNow (live) |
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 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Cambridge is sourced from the PUBLIC WORKS monitoring area, located approximately 16 miles from city center. This EPA-certified station continuously tracks ground-level ozone, the primary driver of air quality alerts in this area.
Cambridge has relatively consistent air quality throughout the year without a strong seasonal peak. Air quality is primarily influenced by local traffic, industrial activity, and regional weather patterns rather than a single seasonal driver.
AQI Trend (10 Years)
Air Quality Days by Year
Cambridge Median AQI by Year
Annual EPA air quality data for Cambridge — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2016 | 35 | 198 | — | 77 | Ozone |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2016 Air Quality Summary
Primary Pollutant Days (2016)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Cambridge Air Quality
What is the air quality in Cambridge today?
The current AQI in Cambridge is 39, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
What is the most common air pollutant in Cambridge?
Ozone is the primary air pollutant in Cambridge, responsible for 212 days (100% of monitored days) in 2016. Ground-level ozone forms when sunlight reacts with emissions from vehicles and industry, typically peaking on hot summer afternoons.
How many unhealthy air days does Cambridge have per year?
In 2016, Cambridge recorded 93% good air quality days (198 days) out of 212 monitored days. There were 0 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 77.
What air quality grade does Cambridge receive?
Cambridge receives an air quality grade of A, placing it better than 80% of US cities. This is based on a median AQI of 35 in 2016, with 198 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 80% of US cities
Nearby Cities
Get AQI Alerts
Receive notifications when air quality changes in Cambridge
National Rankings
See how Cambridge compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Cambridge
Ozone is Cambridge's primary pollutant. Standard HEPA filters don't capture ozone molecules — you need activated carbon or PECO technology to chemically break them down. We highlight those units here.
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Molekule Air Pro
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Honeywell HPA300
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