Metro area air quality · 2025
Toledo, OH
Median AQI 52 (Moderate). 47.4% of monitored days rated Good across this metro's EPA monitoring network.
- 52
- Median AQI
- 47.4%
- Good-air days
- 1
- Unhealthy days
- 11%
- Cleaner than US metros
Toledo, OH posted a 2025 median AQI of 52 (Moderate) with 47.4% Good days
According to the U.S. EPA Air Quality System, the Toledo, OH CBSA recorded a median AQI of 52 across 365 monitored days in 2025, with 47.4% rated Good and 1 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 Toledo, OH CBSA's 47.4% Good-day share places it cleaner than 11% of US metros in 2025.
- Closest median-AQI peer
- Augusta-Richmond County, GA-SC (46.0% Good, median AQI 52) is the closest nationwide median-AQI peer to Toledo, OH.
- 2020–2025 Good-day shift
- Toledo, OH's Good-day share moved -23.8 points from 2020 to 2025 (median AQI +10).
- Median AQI
- Median AQI: 52
Aggregated from EPA Air Quality System (2025), 365 monitored days. EPA AQS →
The verdict
Toledo, OH lands in the lower Good-day tercile (47.4% Good), a thinner clean-air share than most CBSA peers here. On the EPA scale the metro runs moderate, among the more polluted US metros, with a median AQI of 52 and 47.4% of 365 monitored days in the Good band.
- 52
- median AQI · Moderate
- 47.4%
- days rated Good
- 11%
- cleaner than US metros
- 154
- worst single reading
1 day reached Unhealthy or worse across the metro's monitors in 2025.
Annual release change
What changed in the 2025 EPA annual release
- Toledo, OH metro's Good-day share rose from 42.8% to 48.5% between the 2024 and 2025 EPA annual releases, a change of +5.6 percentage points.
- Toledo, OH metro's peak single-day AQI rose from 119 to 154 between the 2024 and 2025 EPA annual releases, a change of +35 points.
- Toledo, OH metro's Unhealthy-category days rose from 0 to 1 between the 2024 and 2025 EPA annual releases, a change of +1 days.
Toledo, OH lands in the lower Good-day tercile (47.4% Good), a thinner clean-air share than most CBSA peers here. Signature read: 47.4% 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 52 over 365 measured days in 2025 (Moderate / Poor). The monitored-day split lands at 173 Good (47%), 183 Moderate (50%), and 8 Unhealthy-for-Sensitive-Groups (2%). The 90th-percentile AQI finished at 74; the highest single-day reading hit 154 (Unhealthy).
Across 2020–2025, Good-day share shifted -23.8 points and median AQI moved +10 (worsening). The annual record contains 1 day at Unhealthy or worse. Metros with comparable AQI profiles include Augusta-Richmond County, GA-SC (46.0% good, AQI 52); Beaumont-Port Arthur, TX (41.4% good, AQI 52); Birmingham-Hoover, AL (43.0% good, AQI 52).
Air Quality Summary
Median AQI
52
Moderate
Good Days
47.4%
173 of 365 days
Max AQI
154
Unhealthy
Health Grade
Poor
90th pct: 74
AQI Day Breakdown (2025)
Distribution of 365 monitored days across EPA AQI categories.
Good
173
47%
Moderate
183
50%
USG
8
2%
Unhealthy
1
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The Toledo, OH metro area's air quality is rated Poor based on 47.4% good air days. There were 1 unhealthy days in 2025 when outdoor activity should be limited.
Air quality is acceptable most days, but 8 days reached "Unhealthy for Sensitive Groups" and peak AQI reached 154. Sensitive groups should monitor real-time conditions at AirNow.gov.
How does the Toledo, OH metro compare?
How Toledo, OH compares
5-Year Air Quality Trend
Air quality is worsening in the Toledo, OH metro. Highest Good-day share: 2020 (72.3%, 250 of 346 monitored days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 250 | 96 | 0 | 42 | 136 |
| 2021 | 222 | 138 | 0 | 46 | 122 |
| 2022 | 239 | 118 | 0 | 44 | 119 |
| 2023 | 217 | 133 | 2 | 45 | 190 |
| 2024 | 155 | 207 | 0 | 53 | 119 |
| 2025 | 173 | 183 | 1 | 52 | 154 |
Metros with a similar median AQI
CBSA peers nationwide whose annual median AQI sits near Toledo, OH (52).
Augusta-Richmond County, GA-SC
Median AQI 52 · 46.0% Good-day share
Beaumont-Port Arthur, TX
Median AQI 52 · 41.4% Good-day share
Birmingham-Hoover, AL
Median AQI 52 · 43.0% Good-day share
Charlotte-Concord-Gastonia, NC-SC
Median AQI 52 · 46.0% Good-day share
El Dorado, AR
Median AQI 52 · 41.8% Good-day share
Grand Rapids-Wyoming, MI
Median AQI 52 · 41.9% Good-day share
Metros with similar unhealthy-day exposure
A second relationship type: metros whose unhealthy-or-worse day count is closest to Toledo, OH's 1 (independent of median AQI).
Ann Arbor, MI
1 unhealthy-or-worse days · median AQI 41
Bangor, ME
1 unhealthy-or-worse days · median AQI 33
Baraboo, WI
1 unhealthy-or-worse days · median AQI 35
Bartlesville, OK
1 unhealthy-or-worse days · median AQI 44
Beaver Dam, WI
1 unhealthy-or-worse days · median AQI 40
Bellingham, WA
1 unhealthy-or-worse days · median AQI 31
Frequently Asked Questions
How many unhealthy air days does Toledo, OH have? ▼
What is the air quality in the Toledo, OH metro area? ▼
Is air quality in Toledo, OH getting better or worse? ▼
What does AQI 52 mean for health? ▼
How does Toledo, OH compare to other metro areas? ▼
What is the 90th percentile AQI for Toledo, OH? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Toledo, OH, 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, Toledo, OH · 2020–2025