Metro area air quality · 2025

Pueblo, CO

Median AQI 45 (Good). 73.4% of monitored days rated Good across this metro's EPA monitoring network.

45
Median AQI
73.4%
Good-air days
0
Unhealthy days
52%
Cleaner than US metros

Pueblo, CO posted a 2025 median AQI of 45 (Good) with 73.4% Good days

According to the U.S. EPA Air Quality System, the Pueblo, CO CBSA recorded a median AQI of 45 across 365 monitored days in 2025, with 73.4% rated Good and 0 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 Pueblo, CO CBSA's 73.4% Good-day share places it cleaner than 52% of US metros in 2025.
Closest median-AQI peer
Akron, OH (61.6% Good, median AQI 45) is the closest nationwide median-AQI peer to Pueblo, CO.
2020–2025 Good-day shift
Pueblo, CO's Good-day share moved -13.9 points from 2020 to 2025 (median AQI +23).
Median AQI
Median AQI: 45

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

The verdict

Pueblo, CO's median AQI 45 is in the upper (dirtier) CBSA tercile on this site. On the EPA scale the metro runs good, cleaner than the median US metro, with a median AQI of 45 and 73.4% of 365 monitored days in the Good band.

45
median AQI · Good
73.4%
days rated Good
52%
cleaner than US metros
101
worst single reading

No day crossed into the Unhealthy tier across the metro's monitors in 2025.

Annual release change

What changed in the 2025 EPA annual release

2024 → 2025
  • Pueblo, CO metro's peak single-day AQI fell from 143 to 101 between the 2024 and 2025 EPA annual releases, a change of -42 points.
  • Pueblo, CO metro's Good-day share rose from 69.6% to 73.6% between the 2024 and 2025 EPA annual releases, a change of +4.1 percentage points.

Compared against 358 monitored days in 2024 and 364 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

Pueblo, CO's median AQI 45 is in the upper (dirtier) CBSA tercile on this site. Signature read: median AQI 45 (high tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 45 over 365 measured days in 2025 (Good / Moderate). The monitored-day split lands at 268 Good (73%), 96 Moderate (26%), and 1 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 64; the highest single-day reading hit 101 (USG).

Across 2020–2025, Good-day share shifted -13.9 points and median AQI moved +23 (worsening). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Akron, OH (61.6% good, AQI 45); Ardmore, OK (67.9% good, AQI 45); Asheville, NC (69.9% good, AQI 45).

Health effects of air pollution →

Air Quality Summary

Median AQI

45

Good

Good Days

73.4%

268 of 365 days

Max AQI

101

USG

Health Grade

Moderate

90th pct: 64

AQI Day Breakdown (2025)

Distribution of 365 monitored days across EPA AQI categories.

Good

268

73%

Moderate

96

26%

USG

1

0%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Moderate

The Pueblo, CO metro area's air quality is rated Moderate based on 73.4% good air days. No unhealthy air days were recorded in 2025.

Air quality is generally acceptable. Unusually sensitive people should monitor real-time conditions at AirNow.gov during high-pollution events.

How does the Pueblo, CO metro compare?

How Pueblo, CO compares

Good-day share better than typical
Pueblo, CO 73.4%
Akron, OH 61.6%
Typical US metro 70.6%
Median AQI worse than typical
Pueblo, CO 45
Akron, OH 45
Typical US metro 41
Unhealthy days / yr better than typical
Pueblo, CO 0
Akron, OH 0
Typical US metro 1

5-Year Air Quality Trend

Air quality is worsening in the Pueblo, CO metro. Highest Good-day share: 2021 (92.7%, 203 of 219 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 84 12 0 22
2021 203 16 0 23
2022 317 29 0 21
2023 277 84 0 43
2024 249 109 0 44
2025 268 96 0 45

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Pueblo, CO (45).

Akron, OH

Median AQI 45 · 61.6% Good-day share

45

Ardmore, OK

Median AQI 45 · 67.9% Good-day share

45

Asheville, NC

Median AQI 45 · 69.9% Good-day share

45

Cheyenne, WY

Median AQI 45 · 75.1% Good-day share

45

Clinton, IA

Median AQI 45 · 59.5% Good-day share

45

Fort Dodge, IA

Median AQI 45 · 59.2% Good-day share

45

Metros with similar unhealthy-day exposure

A second relationship type: metros whose unhealthy-or-worse day count is closest to Pueblo, CO's 0 (independent of median AQI).

Aberdeen, SD

0 unhealthy-or-worse days · median AQI 27

27

Aberdeen, WA

0 unhealthy-or-worse days · median AQI 22

22

Adrian, MI

0 unhealthy-or-worse days · median AQI 41

41

Albany, GA

0 unhealthy-or-worse days · median AQI 46

46

Albany, OR

0 unhealthy-or-worse days · median AQI 27

27

Albany-Schenectady-Troy, NY

0 unhealthy-or-worse days · median AQI 41

41

Frequently Asked Questions

What does AQI 45 mean for health? ▼
An AQI of 45 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 many unhealthy air days does Pueblo, CO have? ▼
In 2025, the Pueblo, CO metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 101.
What is the air quality in the Pueblo, CO metro area? ▼
The Pueblo, CO metro area has a median Air Quality Index (AQI) of 45, rated "Good." 73.4% of monitored days (268 out of 365) had good air quality in 2025.
Is air quality in Pueblo, CO getting better or worse? ▼
Air quality in the Pueblo, CO metro is worsening across floor-qualifying years (2021-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2021 at 92.7% (203 of 219 days). Lowest qualifying Good-day share: 2024 at 69.6% (249 of 358 days).
How does Pueblo, CO compare to other metro areas? ▼
The Pueblo, CO metro has 73.4% good air days. Similar metros: Akron, OH (61.6% good), Ardmore, OK (67.9% good), Asheville, NC (69.9% good).
What is the 90th percentile AQI for Pueblo, CO? ▼
The 90th percentile AQI for the Pueblo, CO metro area is 64, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 101 (USG).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Pueblo, CO, 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, Pueblo, CO · 2020–2025