AirNow API on new websites

1. AirNow API appeared on 1 new site in the last 30 days.^[1]

The line is the 7-day average share of new sites that use AirNow API, since 10 September.

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	LocalLogic	0.1%	22.7%
2	▼1	The Movie Database	<0.1%	6.7%
3	▲1	Daum Postcode	<0.1%	5.4%
4	▼1	ViaCEP	<0.1%	3.6%
5	▼1	Frankfurter	<0.1%	3.2%
6	▲2	Walk Score	<0.1%	2.8%
7	▼2	Dimensions	<0.1%	1.9%
8	▼2	Open Food Facts	<0.1%	1.8%
9	▼1	Postcodes.io	<0.1%	1.7%
10	▲9	NASA Open Data	<0.1%	1.7%
11	▼3	BigDataCloud	<0.1%	1.5%
12	▲7	Wikidata	<0.1%	1.5%
…
297	▲302	AirNow API	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Data API tool. Among September launches it ranked #117 in Data API, up from #419 in August. All 1527 in Data API

6 of the 6 sites using AirNow API are product launches we list individually.

Site	Found	Also detected
Honolulu Monitor honolulu-monitor.com	Sep 23
EcoBridge Home Intelligence System bepsflow.com	Sep 22
Wildfire Smoke Forecast & Map Near You | Smoke Window smokewindow.com · Canada	Sep 21
Critical Access Solutions criticalaccesssolutions.com	Sep 16
Critical Access Services criticalaccessservices.com · Health	Sep 15
MyFilterAlert — Never Forget a Filter Change Again myfilteralert.com	Aug 1

1. These figures cover websites that went live since April 2026, not the web as a whole.