Metro area air quality · 2025

Killeen-Temple, TX

Median AQI 45 (Good). 66.0% of monitored days rated Good across this metro's EPA monitoring network.

45
Median AQI
66.0%
Good-air days
0
Unhealthy days
36%
Cleaner than US metros

Killeen-Temple, TX posted a 2025 median AQI of 45 (Good) with 66.0% Good days

According to the U.S. EPA Air Quality System, the Killeen-Temple, TX CBSA recorded a median AQI of 45 across 365 monitored days in 2025, with 66.0% 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 Killeen-Temple, TX CBSA's 66.0% Good-day share places it cleaner than 36% 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 Killeen-Temple, TX.
2020–2025 Good-day shift
Killeen-Temple, TX's Good-day share moved +2.1 points from 2020 to 2025 (median AQI +1).
Median AQI
Median AQI: 45

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

The verdict

Killeen-Temple, TX's median AQI 45 is in the upper (dirtier) CBSA tercile on this site. On the EPA scale the metro runs good, more polluted than the median US metro, with a median AQI of 45 and 66.0% of 365 monitored days in the Good band.

45
median AQI · Good
66.0%
days rated Good
36%
cleaner than US metros
140
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
  • Killeen-Temple, TX metro's Good-day share rose from 62.6% to 66.8% between the 2024 and 2025 EPA annual releases, a change of +4.2 percentage points.
  • Killeen-Temple, TX metro's peak single-day AQI rose from 129 to 140 between the 2024 and 2025 EPA annual releases, a change of +11 points.

Compared against 361 monitored days in 2024 and 361 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

Killeen-Temple, TX'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 241 Good (66%), 120 Moderate (33%), and 4 Unhealthy-for-Sensitive-Groups (1%). The 90th-percentile AQI finished at 65; the highest single-day reading hit 140 (USG).

Across 2020–2025, Good-day share shifted +2.1 points and median AQI moved +1 (stable). 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

66.0%

241 of 365 days

Max AQI

140

USG

Health Grade

Moderate

90th pct: 65

AQI Day Breakdown (2025)

Distribution of 365 monitored days across EPA AQI categories.

Good

241

66%

Moderate

120

33%

USG

4

1%

Unhealthy

0

0%

Very Unhealthy

0

0%

Hazardous

0

0%

Health Impact Assessment

Moderate

The Killeen-Temple, TX metro area's air quality is rated Moderate based on 66.0% 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 Killeen-Temple, TX metro compare?

How Killeen-Temple, TX compares

Good-day share worse than typical
Killeen-Temple, TX 66.0%
Akron, OH 61.6%
Typical US metro 70.6%
Median AQI worse than typical
Killeen-Temple, TX 45
Akron, OH 45
Typical US metro 41
Unhealthy days / yr better than typical
Killeen-Temple, TX 0
Akron, OH 0
Typical US metro 1

5-Year Air Quality Trend

Air quality is stable in the Killeen-Temple, TX metro. Highest Good-day share: 2025 (66.8%, 241 of 361 monitored days).

Year Good Moderate Unhealthy Median AQI
2020 236 129 0 44
2021 240 122 0 44
2022 241 121 0 46
2023 231 128 0 44
2024 226 135 0 46
2025 241 120 0 45

Metros with a similar median AQI

CBSA peers nationwide whose annual median AQI sits near Killeen-Temple, TX (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 Killeen-Temple, TX'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 Killeen-Temple, TX have? ▼
In 2025, the Killeen-Temple, TX metro area recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 140.
What is the air quality in the Killeen-Temple, TX metro area? ▼
The Killeen-Temple, TX metro area has a median Air Quality Index (AQI) of 45, rated "Good." 66.0% of monitored days (241 out of 365) had good air quality in 2025.
Is air quality in Killeen-Temple, TX getting better or worse? ▼
Air quality in the Killeen-Temple, TX metro is stable across floor-qualifying years (2020-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2025 at 66.8% (241 of 361 days). Lowest qualifying Good-day share: 2024 at 62.6% (226 of 361 days).
How does Killeen-Temple, TX compare to other metro areas? ▼
The Killeen-Temple, TX metro has 66.0% 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 Killeen-Temple, TX? ▼
The 90th percentile AQI for the Killeen-Temple, TX metro area is 65, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 140 (USG).

Data Sources

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