Metro area air quality · 2025

Davenport-Moline-Rock Island, IA-IL

Median AQI 46 (Good). 56.7% of monitored days rated Good across this metro's EPA monitoring network.

46
Median AQI
56.7%
Good-air days
2
Unhealthy days
20%
Cleaner than US metros

Davenport-Moline-Rock Island, IA-IL posted a 2025 median AQI of 46 (Good) with 56.7% Good days

According to the U.S. EPA Air Quality System, the Davenport-Moline-Rock Island, IA-IL CBSA recorded a median AQI of 46 across 365 monitored days in 2025, with 56.7% rated Good and 2 unhealthy or worse. This is an annual metro comparison, not a live advisory.

Data source EPA Air Quality System (AQS)

Cleaner than US metros
The Davenport-Moline-Rock Island, IA-IL CBSA's 56.7% Good-day share places it cleaner than 20% of US metros in 2025.
Closest median-AQI peer
Albany, GA (57.3% Good, median AQI 46) is the closest nationwide median-AQI peer to Davenport-Moline-Rock Island, IA-IL.
2020–2025 Good-day shift
Davenport-Moline-Rock Island, IA-IL's Good-day share moved +11.1 points from 2020 to 2025 (median AQI -6).
Median AQI
Median AQI: 46

Aggregated from EPA Air Quality System (2025), 365 monitored days. EPA AQS →

The verdict

Davenport-Moline-Rock Island, IA-IL lands in the lower Good-day tercile (56.7% Good), a thinner clean-air share than most CBSA peers here. On the EPA scale the metro runs good, among the more polluted US metros, with a median AQI of 46 and 56.7% of 365 monitored days in the Good band.

46
median AQI · Good
56.7%
days rated Good
20%
cleaner than US metros
167
worst single reading

2 days reached Unhealthy or worse across the metro's monitors in 2025.

Annual release change

What changed in the 2025 EPA annual release

2024 → 2025
  • Davenport-Moline-Rock Island, IA-IL metro's peak single-day AQI rose from 90 to 167 between the 2024 and 2025 EPA annual releases, a change of +77 points.
  • Davenport-Moline-Rock Island, IA-IL metro's Good-day share fell from 61.2% to 56.7% between the 2024 and 2025 EPA annual releases, a change of -4.5 percentage points.
  • Davenport-Moline-Rock Island, IA-IL metro's Unhealthy-category days rose from 0 to 2 between the 2024 and 2025 EPA annual releases, a change of +2 days.

Compared against 366 monitored days in 2024 and 365 in 2025. These are arithmetic differences between two stored EPA annual summaries, not a cause claim or a live advisory.

National release changes Two-year CSV

Davenport-Moline-Rock Island, IA-IL lands in the lower Good-day tercile (56.7% Good), a thinner clean-air share than most CBSA peers here. Signature read: 56.7% Good-day share (low tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 46 over 365 measured days in 2025 (Good / Moderate). The monitored-day split lands at 207 Good (57%), 156 Moderate (43%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 71; the highest single-day reading hit 167 (Unhealthy).

Across 2020–2025, Good-day share shifted +11.1 points and median AQI moved -6 (improving). The annual record contains 2 days at Unhealthy or worse. Metros with comparable AQI profiles include Albany, GA (57.3% good, AQI 46); Athens-Clarke County, GA (57.8% good, AQI 46); Brookings, SD (58.6% good, AQI 46).

Health effects of air pollution →

Air Quality Summary

Median AQI

46

Good

Good Days

56.7%

207 of 365 days

Max AQI

167

Unhealthy

Health Grade

Moderate

90th pct: 71

AQI Day Breakdown (2025)

Distribution of 365 monitored days across EPA AQI categories.

Good

207

57%

Moderate

156

43%

USG

0

0%

Unhealthy

2

1%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Moderate

The Davenport-Moline-Rock Island, IA-IL metro area's air quality is rated Moderate based on 56.7% good air days. There were 2 unhealthy days in 2025 when outdoor activity should be limited.

Air quality is acceptable most days, but 0 days reached "Unhealthy for Sensitive Groups" and peak AQI reached 167. Sensitive groups should monitor real-time conditions at AirNow.gov.

How does the Davenport-Moline-Rock Island, IA-IL metro compare?

How Davenport-Moline-Rock Island, IA-IL compares

Good-day share worse than typical
Davenport-Moline-Rock Island, IA-IL 56.7%
Albany, GA 57.3%
Typical US metro 70.6%
Median AQI worse than typical
Davenport-Moline-Rock Island, IA-IL 46
Albany, GA 46
Typical US metro 41
Unhealthy days / yr worse than typical
Davenport-Moline-Rock Island, IA-IL 2
Albany, GA 0
Typical US metro 1

5-Year Air Quality Trend

Air quality is improving in the Davenport-Moline-Rock Island, IA-IL metro. Highest Good-day share: 2024 (61.2%, 224 of 366 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 166 197 1 52
2021 142 220 0 54
2022 194 171 0 49
2023 136 206 3 54
2024 224 142 0 46
2025 207 156 2 46

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Davenport-Moline-Rock Island, IA-IL (46).

Albany, GA

Median AQI 46 · 57.3% Good-day share

46

Athens-Clarke County, GA

Median AQI 46 · 57.8% Good-day share

46

Brookings, SD

Median AQI 46 · 58.6% Good-day share

46

Chico, CA

Median AQI 46 · 65.2% Good-day share

46

Colorado Springs, CO

Median AQI 46 · 68.2% Good-day share

46

Eugene, OR

Median AQI 46 · 56.4% Good-day share

46

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Davenport-Moline-Rock Island, IA-IL's 2 (independent of median AQI).

Ardmore, OK

2 unhealthy-or-worse days · median AQI 45

45

Bridgeport-Stamford-Norwalk, CT

2 unhealthy-or-worse days · median AQI 44

44

Chattanooga, TN-GA

2 unhealthy-or-worse days · median AQI 49

49

Cincinnati, OH-KY-IN

2 unhealthy-or-worse days · median AQI 56

56

Columbus, GA-AL

2 unhealthy-or-worse days · median AQI 48

48

Fort Dodge, IA

2 unhealthy-or-worse days · median AQI 45

45

Frequently Asked Questions

How many unhealthy air days does Davenport-Moline-Rock Island, IA-IL have? ▼
In 2025, the Davenport-Moline-Rock Island, IA-IL metro area recorded 2 unhealthy air days (2 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 167.
What is the air quality in the Davenport-Moline-Rock Island, IA-IL metro area? ▼
The Davenport-Moline-Rock Island, IA-IL metro area has a median Air Quality Index (AQI) of 46, rated "Good." 56.7% of monitored days (207 out of 365) had good air quality in 2025.
Is air quality in Davenport-Moline-Rock Island, IA-IL getting better or worse? ▼
Air quality in the Davenport-Moline-Rock Island, IA-IL metro is improving across floor-qualifying years (2020-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2024 at 61.2% (224 of 366 days). Lowest qualifying Good-day share: 2021 at 39.2% (142 of 362 days).
What does AQI 46 mean for health? ▼
An AQI of 46 is "Good", air quality is satisfactory and poses little or no health risk. This is the best category on the EPA's AQI scale.
How does Davenport-Moline-Rock Island, IA-IL compare to other metro areas? ▼
The Davenport-Moline-Rock Island, IA-IL metro has 56.7% good air days. Similar metros: Albany, GA (57.3% good), Athens-Clarke County, GA (57.8% good), Brookings, SD (58.6% good).
What is the 90th percentile AQI for Davenport-Moline-Rock Island, IA-IL? ▼
The 90th percentile AQI for the Davenport-Moline-Rock Island, IA-IL metro area is 71, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 167 (Unhealthy).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Davenport-Moline-Rock Island, IA-IL, 2025. See our methodology for how AQI, median, and coverage figures are computed.

Read our methodology , how this data is sourced, computed, and verified.

Source: U.S. EPA Air Quality System (AQS) Annual AQI by CBSA summary, Davenport-Moline-Rock Island, IA-IL · 2020–2025