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Data source: Environmental Protection Agency
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Air quality in Baltimore, Maryland correlates with...

VariableCorrelationYearsHas img?
The average number of likes on Tom Scott's YouTube videosr=0.9515yrsNo
Google searches for 'i have a headache'r=0.9320yrsNo


Air quality in Baltimore, Maryland also correlates with...

VariableCorrelationYearsSys. Score
Realty Income's stock price (O)r=0.9422yrs399
The Coca-Cola Company's stock price (KO)r=0.922yrs398
Unilever's stock price (UL)r=0.9322yrs398
Total length of Steve Mould's YouTube videosr=0.9415yrs398
Total likes of Tom Scott's YouTube videosr=0.9315yrs396
Annual US household spending on fruits and vegetablesr=0.9523yrs392
Annual US household spending on fresh vegetablesr=0.9523yrs392
Ticket prices at North American movie theatersr=0.9422yrs382
US Wind Power Generation Capacityr=0.9523yrs382
Popularity of the 'this is fine' memer=0.9218yrs380
US milk fat used to produce cheese (excluding cottage cheese)r=0.9422yrs379
Wind power generated in Taiwanr=0.9322yrs379
U.S. direct investment abroadr=0.9222yrs378
US production of cheese (other than cottage cheese)r=0.9322yrs378
Wind power generated in Czechiar=0.9222yrs378
Biomass power generated in Lithuaniar=0.9321yrs378
Google searches for 'no cap'r=0.9320yrs377
Economic output of Washington metro arear=0.9321yrs376
US production of dry milk products (net)r=0.9222yrs376
Google searches for 'buy a house'r=0.9220yrs376
The number of electrical engineers in Marylandr=0.9320yrs376
Popularity of the 'this is fine' memer=0.918yrs376
Google's Advertising Revenuer=0.9122yrs374
Google's annual advertising revenuer=0.9122yrs374
Microsoft's Worldwide Earningsr=0.9121yrs374
The number of medical assistants in Marylandr=0.9220yrs374
Adidas Group's Global Net Salesr=0.9123yrs372
Global annual electricity generationr=0.9218yrs372
Annual Revenue of the Lego Groupr=0.920yrs371
WEC Energy Group's stock price (WEC)r=0.9322yrs368
Paypal's Number of Active Registered User Accountsr=0.9213yrs367
Total length of SmarterEveryDay YouTube videosr=0.917yrs364
Annual US household spending on fresh fruitsr=0.9523yrs362
Annual US household spending on processed vegetablesr=0.9523yrs362
Customer satisfaction with AT&Tr=0.918yrs360
Annual US household spending on rented dwellingsr=0.9423yrs360
US Tree Nut Consumption per Personr=0.9422yrs359
Eversource Energy's stock price (ES)r=0.9322yrs358
Annual US household spending on cereals and bakery productsr=0.9323yrs358
Annual US household spending on healthcarer=0.9323yrs358
Annual US household spending on health insurancer=0.9323yrs358
Annual US household spending on bakery productsr=0.9223yrs357
Annual US household spending on housingr=0.9223yrs357
SAP SE's stock price (SAP)r=0.9222yrs346
US production of sour creamr=0.9222yrs346
Google searches for 'avocado toast'r=0.9516yrs346
Wind power generated in Moroccor=0.922yrs344
Popularity of the 'red pill blue pill' memer=0.8718yrs342
The number of clergy in Marylandr=0.920yrs341
Becton, Dickinson and Company's stock price (BDX)r=0.9222yrs336
US dairy skim solids used to produce cheese (other than cottage cheese)r=0.9322yrs336
Google searches for 'tummy ache'r=0.9120yrs334
Wind power generated in Lithuaniar=0.9118yrs332
Sempra's stock price (SRE)r=0.9222yrs326
US production of butterr=0.9122yrs324
Google searches for 'i am dizzy'r=0.9120yrs324
Wind power generated in Croatiar=0.918yrs320
Average number of comments on SmarterEveryDay YouTube videosr=0.8717yrs320
HDFC Bank's stock price (HDB)r=0.9122yrs314
US milk fat used to produce butterr=0.9122yrs314
Google searches for 'who is alexa'r=0.9117yrs311
The number of sonographers in Marylandr=0.8920yrs311
Geothermal power generated in Germanyr=0.918yrs310
Average views of Tom Scott's YouTube videosr=0.9415yrs308
Annual US household spending on property taxesr=0.9223yrs307
American Tower's stock price (AMT)r=0.9122yrs304
US dairy skim solids used to produce dry milk productsr=0.9222yrs304
Annual US household spending on other household productsr=0.9223yrs302
Solar power generated in Grenadar=0.9115yrs299
Annual US household spending on pets, toys, and hobbiesr=0.9223yrs297
Ecolab's stock price (ECL)r=0.9122yrs294
Cost to send a letter via the USPSr=0.917yrs294
US dairy skim solids used to produce butterr=0.9122yrs293
US household spending on fresh fruitsr=0.9223yrs292
Solar power generated in Nepalr=0.915yrs288
Crown Castle's stock price (CCI)r=0.9122yrs284
Annual US household spending on housekeeping suppliesr=0.923yrs284
US household spending on rented dwellingsr=0.923yrs279
Wind power generated in Vietnamr=0.9114yrs278
Ross Stores' stock price (ROST)r=0.9122yrs274
Google searches for 'who is jk rowling'r=0.920yrs272
Wind power generated in Uruguayr=0.914yrs266
Brown-Forman's stock price (BF.A)r=0.9122yrs264
US average milk-fat content of cheese (other than cottage cheese)r=0.9122yrs262
Google searches for 'what is my zodiac sign'r=0.920yrs262
Brown-Forman's stock price (BF.B)r=0.9122yrs254
Petroluem consumption in Mauritaniar=0.942yrs252
Google searches for 'smol'r=0.8920yrs251
CGI Inc.'s stock price (GIB)r=0.9122yrs244
US milk fat used to produce dry milk productsr=0.8922yrs242
Electricity generation in Guinea-Bissaur=0.8742yrs240
Hormel Foods' stock price (HRL)r=0.9122yrs234
Fossil fuel use in Guinea-Bissaur=0.8742yrs230
Digital Realty Trust's stock price (DLR)r=0.9219yrs223
Petroluem consumption in Burundir=0.8642yrs216
Church & Dwight Co.'s stock price (CHD)r=0.922yrs213
Liquefied petroleum gas used in Mauritaniar=0.8642yrs206
Solar power generated in Luxembourgr=0.8921yrs182
McDonald's stock price (MCD)r=0.922yrs178


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You caught me! While it would be intuitive to sort only by "correlation," I have a big, weird database. If I sort only by correlation, often all the top results are from some one or two very large datasets (like the weather or labor statistics), and it overwhelms the page.

I can't show you *all* the correlations, because my database would get too large and this page would take a very long time to load. Instead I opt to show you a subset, and I sort them by a magic system score. It starts with the correlation, but penalizes variables that repeat from the same dataset. (It also gives a bonus to variables I happen to find interesting.)
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