Metro area air quality · 2025
Madera, CA
Median AQI 43 (Good). 69.2% of monitored days rated Good across this metro's EPA monitoring network.
- 43
- Median AQI
- 69.2%
- Good-air days
- 0
- Unhealthy days
- 43%
- Cleaner than US metros
Aggregated from EPA Air Quality System (2025), 120 monitored days. EPA AQS →
The verdict
The Madera, CA metro runs good on the EPA scale, more polluted than the median US metro, a median AQI of 43 with 69.2% of 120 monitored days in the Good band.
- 43
- median AQI · Good
- 69.2%
- days rated Good
- 43%
- cleaner than US metros
- 91
- worst single reading
No day crossed into the Unhealthy tier across the metro's monitors in 2025.
Insights: Madera, CA metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 43 over 120 measured days in 2025, which corresponds to a Good band and a Moderate metro-wide health grade. The monitored-day split lands at 83 Good days (69%), 37 Moderate (31%), and 0 Unhealthy-for-Sensitive-Groups (0%). The 90th-percentile AQI finished at 66 while the highest single-day reading hit 91 (Moderate). Metro residents averaged roughly 20.8 clean-air days per 30-day window across the reporting year.
Across the 2020–2025 trend window, good days shifted by -21 and the median AQI moved -21 points, which classifies the multi-year trajectory as improving. The metro avoided any Unhealthy-tier days entirely, an outcome that typically reflects favorable wind patterns, lower industrial density, or effective regional emission controls. Metros with comparable AQI profiles include Allentown-Bethlehem-Easton, PA-NJ (65.6% good, AQI 43); Amarillo, TX (75.7% good, AQI 43); Ashtabula, OH (81.2% good, AQI 43).
Air Quality Summary
Median AQI
43
Good
Good Days
69.2%
83 of 120 days
Max AQI
91
Moderate
Health Grade
Moderate
90th pct: 66
AQI Day Breakdown (2025)
Distribution of 120 monitored days across EPA AQI categories.
Good
83
69%
Moderate
37
31%
USG
0
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The Madera, CA metro area's air quality is rated Moderate based on 69.2% 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 Madera, CA metro compare?
How Madera, CA compares
5-Year Air Quality Trend
Air quality is improving in the Madera, CA metro. Best year: 2024 (163 good days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 104 | 209 | 15 | 64 | 275 |
| 2021 | 133 | 197 | 7 | 58 | 194 |
| 2022 | 147 | 205 | 0 | 54 | 136 |
| 2023 | 162 | 188 | 1 | 52 | 151 |
| 2024 | 163 | 178 | 0 | 52 | 140 |
| 2025 | 83 | 37 | 0 | 43 | 91 |
Metros with Similar Air Quality
Metro areas across the US with a similar median AQI to Madera, CA.
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Worst Air Quality
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All Metro Areas
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Air Quality Guides
Frequently Asked Questions
What is the air quality in the Madera, CA metro area? ▼
How many unhealthy air days does Madera, CA have? ▼
Is air quality in Madera, CA getting better or worse? ▼
What does AQI 43 mean for health? ▼
What is the 90th percentile AQI for Madera, CA? ▼
How does Madera, CA compare to other metro areas? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset, 2020–2025. 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 files (metro-level) · 2020–2025
Every figure on PlainAir is rendered directly from EPA AQS air-quality monitoring data, no number is typed in by an editor. This page draws directly on EPA AQS air-quality monitoring data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.