Metro area air quality · 2025
College Station-Bryan, TX
Median AQI 40 (Good). 68.5% of monitored days rated Good across this metro's EPA monitoring network.
- 40
- Median AQI
- 68.5%
- Good-air days
- 0
- Unhealthy days
- 42%
- Cleaner than US metros
College Station-Bryan, TX posted a 2025 median AQI of 40 (Good) with 68.5% Good days
According to the U.S. EPA Air Quality System, the College Station-Bryan, TX CBSA recorded a median AQI of 40 across 340 monitored days in 2025, with 68.5% 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 College Station-Bryan, TX CBSA's 68.5% Good-day share places it cleaner than 42% of US metros in 2025.
- Closest median-AQI peer
- Altoona, PA (76.9% Good, median AQI 40) is the closest nationwide median-AQI peer to College Station-Bryan, TX.
- 2020–2025 Good-day shift
- College Station-Bryan, TX's Good-day share moved -0.8 points from 2020 to 2025 (median AQI +0).
- Median AQI
- Median AQI: 40
Aggregated from EPA Air Quality System (2025), 340 monitored days. EPA AQS →
The verdict
College Station-Bryan, TX's peak reading 78 stays in the lower max-AQI tercile on this extract. On the EPA scale the metro runs good, more polluted than the median US metro, with a median AQI of 40 and 68.5% of 340 monitored days in the Good band.
- 40
- median AQI · Good
- 68.5%
- days rated Good
- 42%
- cleaner than US metros
- 78
- 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
- College Station-Bryan, TX metro's Good-day share rose from 65.9% to 68.5% between the 2024 and 2025 EPA annual releases, a change of +2.6 percentage points.
- College Station-Bryan, TX metro's peak single-day AQI fell from 102 to 78 between the 2024 and 2025 EPA annual releases, a change of -24 points.
College Station-Bryan, TX's peak reading 78 stays in the lower max-AQI tercile on this extract. Signature read: peak AQI 78 (low tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 40 over 340 measured days in 2025 (Good / Moderate). The monitored-day split lands at 233 Good (69%), 107 Moderate (31%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 57; the highest single-day reading hit 78 (Moderate).
Across 2020–2025, Good-day share shifted -0.8 points and median AQI moved +0 (stable). No Unhealthy-tier days appear in this annual dataset. Metros with comparable AQI profiles include Altoona, PA (76.9% good, AQI 40); Beaver Dam, WI (72.3% good, AQI 40); Bismarck, ND (76.7% good, AQI 40).
Air Quality Summary
Median AQI
40
Good
Good Days
68.5%
233 of 340 days
Max AQI
78
Moderate
Health Grade
Moderate
90th pct: 57
AQI Day Breakdown (2025)
Distribution of 340 monitored days across EPA AQI categories.
Good
233
69%
Moderate
107
31%
USG
0
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The College Station-Bryan, TX metro area's air quality is rated Moderate based on 68.5% 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 College Station-Bryan, TX metro compare?
How College Station-Bryan, TX compares
5-Year Air Quality Trend
Air quality is stable in the College Station-Bryan, TX metro. Highest Good-day share: 2022 (72.8%, 251 of 345 monitored days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 210 | 93 | 0 | 40 | 99 |
| 2021 | 248 | 108 | 0 | 40 | 85 |
| 2022 | 251 | 94 | 0 | 40 | 94 |
| 2023 | 233 | 115 | 0 | 39 | 79 |
| 2024 | 232 | 120 | 0 | 39 | 102 |
| 2025 | 233 | 107 | 0 | 40 | 78 |
Metros with a similar median AQI
CBSA peers nationwide whose annual median AQI sits near College Station-Bryan, TX (40).
Altoona, PA
Median AQI 40 · 76.9% Good-day share
Beaver Dam, WI
Median AQI 40 · 72.3% Good-day share
Bismarck, ND
Median AQI 40 · 76.7% Good-day share
Cape Coral-Fort Myers, FL
Median AQI 40 · 76.4% Good-day share
Fallon, NV
Median AQI 40 · 85.2% Good-day share
Fayetteville-Springdale-Rogers, AR-MO
Median AQI 40 · 83.3% Good-day share
Metros with similar unhealthy-day exposure
A second relationship type: metros whose unhealthy-or-worse day count is closest to College Station-Bryan, TX's 0 (independent of median AQI).
Aberdeen, SD
0 unhealthy-or-worse days · median AQI 27
Aberdeen, WA
0 unhealthy-or-worse days · median AQI 22
Adrian, MI
0 unhealthy-or-worse days · median AQI 41
Akron, OH
0 unhealthy-or-worse days · median AQI 45
Albany, GA
0 unhealthy-or-worse days · median AQI 46
Albany, OR
0 unhealthy-or-worse days · median AQI 27
Frequently Asked Questions
What is the 90th percentile AQI for College Station-Bryan, TX? ▼
How many unhealthy air days does College Station-Bryan, TX have? ▼
What is the air quality in the College Station-Bryan, TX metro area? ▼
Is air quality in College Station-Bryan, TX getting better or worse? ▼
What does AQI 40 mean for health? ▼
How does College Station-Bryan, TX compare to other metro areas? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for College Station-Bryan, 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, College Station-Bryan, TX · 2020–2025