Warwick, Rhode Island Air Quality
Warwick has a median AQI of 35, earning an air quality grade of A — excellent air quality that ranks better than 82% 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 2025, Warwick recorded 217 good air quality days (90% of monitored days).
Population: 83,175 • County: Kent
Current AQI
Quick Facts
| Current AQI | 9 — Good |
| Air Quality Grade | A |
| Median AQI (2025) | 35 |
| vs. U.S. Cities | Better than 82% |
| 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 Warwick is sourced from the CCRI Providence monitoring area, located approximately 7 miles from city center. This EPA-certified station continuously tracks ground-level ozone, the primary driver of air quality alerts in this area.
Warwick 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
Warwick Median AQI by Year
Annual EPA air quality data for Warwick — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 35 | 217 | — | 90 | Ozone |
| 2024 | 31 | 332 | — | 97 | PM2.5 |
| 2023 | 40 | 287 | 4 | 126 | PM2.5 |
| 2022 | 31 | 334 | — | 100 | Ozone |
| 2021 | 34 | 313 | 3 | 140 | PM2.5 |
| 2020 | 34 | 326 | 1 | 133 | PM2.5 |
| 2019 | 34 | 325 | — | 93 | Ozone |
| 2018 | 36 | 294 | 6 | 140 | PM2.5 |
| 2017 | 32 | 316 | 5 | 133 | PM2.5 |
| 2016 | 35 | 307 | 5 | 147 | Ozone |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Warwick Air Quality
What is the air quality in Warwick today?
The current AQI in Warwick is 9, 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.
Is air quality in Warwick getting better or worse?
Air quality in Warwick has been stable. The median AQI has remained stable at around 35 over the past decade.
What is the most common air pollutant in Warwick?
Ozone is the primary air pollutant in Warwick, responsible for 133 days (55% of monitored days) in 2025. 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 Warwick have per year?
In 2025, Warwick recorded 90% good air quality days (217 days) out of 240 monitored days. There were 0 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 90.
What air quality grade does Warwick receive?
Warwick receives an air quality grade of A, placing it better than 82% of US cities. This is based on a median AQI of 35 in 2025, with 217 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 82% of US cities
Nearby Cities
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National Rankings
See how Warwick compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Warwick
Ozone is Warwick'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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