From aa8098904467158ee722879bbc87f5081c419131 Mon Sep 17 00:00:00 2001
From: ZhipengShen <szpssky@gmail.com>
Date: Wed, 13 Jul 2016 01:05:59 +0800
Subject: [PATCH] Add PM2.5 Data of China

---
 README.md | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/README.md b/README.md
index 66b01085..141e59d4 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,12 @@ A collective list of JSON APIs for use in web development.
 | numverify API | Phone number validation | No | [Go!](https://numverify.com) |
 | vatlayer API | VAT number validation | No | [Go!](https://vatlayer.com) |
 
+### Environment
+
+| API | Description | OAuth | Link |
+|---|---|---|---|
+| PM2.5.in | PM2.5 Data of China | No, but apiKey query string | [Go!](http://www.pm25.in/api_doc) |
+
 ### Exchange
 
 | API | Description | OAuth | Link |