City AQI Comparison

New York City vs Seattle: AQI comparison and planning guide

Compare New York City and Seattle by current-or-fallback AQI, cigarette-equivalent exposure, and practical next steps.

Uses live AirNow readings where supported and falls back to each city's planning baseline when the API is unavailable or unsupported.

New York City

Northeast Corridor

Using live AQI

Current or fallback AQI

AQI 21

Category

Good

Berkeley Earth 24-hour comparison

0.17

Updated Aug 23, 2:45 PM UTC

Proceed with normal outdoor activity.
Use the day to ventilate and prepare before worse conditions arrive.
Check tomorrow's forecast if wildfire smoke or inversion is developing.
Open New York City city guideCalculate New York City at AQI 21

Seattle

Pacific Northwest

Using live AQI

Current or fallback AQI

AQI 30

Category

Good

Berkeley Earth 24-hour comparison

0.25

Updated Aug 23, 2:45 PM UTC

Proceed with normal outdoor activity.
Use the day to ventilate and prepare before worse conditions arrive.
Check tomorrow's forecast if wildfire smoke or inversion is developing.
Open Seattle city guideCalculate Seattle at AQI 30

What changes for planning

Cleaner right now

New York City

Heavier 24h exposure

Seattle

Daily cigarette-equivalent gap

0.1

New York City: Forecast planning snapshot

2026-08-23

AQI 40

Good

2026-08-24

AQI 50

Good

Seattle: Forecast planning snapshot

2026-08-23

AQI 44

Good

2026-08-24

AQI 44

Good

Compare city AQI pages with real utility

These comparison pages show which city looks cleaner right now, how much the daily dose gap changes, and what that means for immediate planning.

Los Angeles vs San Francisco

Compare Los Angeles and San Francisco by current-or-fallback AQI, cigarette-equivalent exposure, and practical next steps.

Delhi vs Beijing

Compare Delhi and Beijing by current-or-fallback AQI, cigarette-equivalent exposure, and practical next steps.