Month

AQI

Health quality

Jun.-12

327

Hazardous

Jul.-12

356

Hazardous

Sep.-12

154

Unhealthy

Oct.-12

154

Unhealthy

Nov.-12

116

Unhealthy for sensitive groups

Dec.-12

166

Unhealthy

Jan.-13

183

Unhealthy

Feb.-13

194

Unhealthy

March-13

381

Hazardous

April-13

215

Very unhealthy

Jun.-13

367

Hazardous

Jul.-13

290

Very unhealthy

Sep.-13

129

Unhealthy for sensitive groups

Oct.-13

133

Unhealthy for sensitive groups