Air Quality Ranking — Redwood City
Updated June 22, 2026
See how neighborhoods in Redwood City compare on air quality. Rankings are based on measured data aggregated across each neighborhood boundary. How air quality is measured →
Top Air Quality Neighborhoods — Ranked
Air remains mostly clean with rare instances of elevated readings. According to iHuus data, the air quality in Friendly Acres is notably better than the Redwood City average.
Air quality remains mostly clean with only rare instances of elevated readings. This level of freshness is notably higher than the Redwood City average, according to iHuus data.
Air quality in this area is generally good with only rare instances of elevated readings. According to iHuus data, the air quality here is better than the Redwood City average.
Full Redwood City Air Quality Ranking
| Neighborhood | Score | City Rank | vs. City Avg |
|---|---|---|---|
| Friendly Acres | 7.7 | #1 | +1.5 ↑ |
| Harbor | 7 | #2 | +0.8 ↑ |
| Ampex | 6.8 | #3 | +0.6 ↑ |
| Middlefield | 6.4 | #4 | +0.2 ↑ |
| Downtown | 6.1 | #5 | -0.1 ↓ |
| Woodside Plaza | 6 | #6 | -0.2 ↓ |
| Centennial | 6 | #7 | -0.2 ↓ |
| Marine | 6 | #8 | -0.2 ↓ |
| Roosevelt | 6 | #9 | -0.2 ↓ |
| Steinberger | 6 | #10 | -0.2 ↓ |
| Westport | 6 | #11 | -0.2 ↓ |
| Arlington | 6 | #12 | -0.2 ↓ |
| Canyon | 6 | #13 | -0.2 ↓ |
| Central | 6 | #14 | -0.2 ↓ |
| Eagle Hill | 6 | #15 | -0.2 ↓ |
| Farm Hill | 6 | #16 | -0.2 ↓ |
| Marlin | 6 | #17 | -0.2 ↓ |
| Oakwood | 6 | #18 | -0.2 ↓ |
| Palm | 6 | #19 | -0.2 ↓ |
| Sequoia | 6 | #20 | -0.2 ↓ |
| Sequoia Tract | 6 | #21 | -0.2 ↓ |
| Shearwater | 6 | #22 | -0.2 ↓ |
| Lido | 6 | #23 | -0.2 ↓ |
| Dolphin | 6 | #24 | -0.2 ↓ |
| Bair Island | 6 | #25 | -0.2 ↓ |
| Marina Park | 5.9 | #26 | -0.3 ↓ |
iHuus Neighborhood Intelligence Insights
Get block-level neighborhood insights for Redwood City
- Street-level scores — see how individual blocks compare, not just neighborhood averages
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- 15 dimensions in full — walkability, noise, air quality, school quality, insurance coverage, population age profile, urban/rural index, and more
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