Air quality in Bihar

31 monitoring stations across 22 cities.

Live Measured 1 hour ago · updated every hour

Highest reading by city

Gaya 163 3 stations · highest is Fine dust (PM2.5)
Purnia 149 1 station · highest is Fine dust (PM2.5)
Chhapra 109 1 station · highest is Coarse dust (PM10)
Patna 86 6 stations · highest is Coarse dust (PM10)
Araria 76 1 station · highest is Fine dust (PM2.5)
Munger 74 1 station · highest is Ozone
Siwan 66 1 station · highest is Carbon monoxide
Begusarai 60 1 station · highest is Carbon monoxide
Motihari 55 1 station · highest is Ozone
Bhagalpur 53 2 stations · highest is Carbon monoxide
Katihar 52 1 station · highest is Carbon monoxide
Kishanganj 50 1 station · highest is Fine dust (PM2.5)
Saharsa 48 1 station · highest is Fine dust (PM2.5)
Manguraha 45 1 station · highest is Ozone
Rajgir 42 1 station · highest is Carbon monoxide
Arrah 41 1 station · highest is Carbon monoxide
Bettiah 34 1 station · highest is Carbon monoxide
Muzaffarpur 32 2 stations · highest is Ozone
Hajipur 28 1 station · highest is Nitrogen dioxide
Sasaram 24 1 station · highest is Coarse dust (PM10)
Bihar Sharif 17 1 station · highest is Coarse dust (PM10)
Samastipur 12 1 station · highest is Carbon monoxide

Every station in Bihar

Each station's own readings, exactly as published. The unit is not declared by the source — see the note on the national page.

Gaya

Station	Highest	Value	Other readings
Collectorate, Gaya - BSPCB	Fine dust (PM2.5)	163	NO2 9SO2 7CO 12OZONE 28
Kareemganj, Gaya - BSPCB	Sulphur dioxide	44	CO 28NO2 3NH3 1OZONE 30
SFTI Kusdihra, Gaya - BSPCB	Nitrogen dioxide	23	CO 19OZONE 14PM2.5 18PM10 22NH3 5SO2 9

Purnia

Station	Highest	Value	Other readings
Mariam Nagar, Purnia - BSPCB	Fine dust (PM2.5)	149	NO2 18SO2 16CO 53NH3 4OZONE 28PM10 116

Chhapra

Station	Highest	Value	Other readings
Darshan Nagar, Chhapra - BSPCB	Coarse dust (PM10)	109	PM2.5 88NO2 1NH3 0OZONE 2CO 84SO2 27

Patna

Station	Highest	Value	Other readings
Samanpura, Patna - BSPCB	Coarse dust (PM10)	86	SO2 9OZONE 45PM2.5 56NO2 10NH3 7CO 84
Govt. High School Shikarpur, Patna - BSPCB	Ozone	82	SO2 10PM10 62NO2 6CO 41PM2.5 40NH3 6
Muradpur, Patna - BSPCB	Ozone	77	PM2.5 40NH3 5PM10 49NO2 3SO2 8CO 50
IGSC Planetarium Complex, Patna - BSPCB	Ozone	74	SO2 22NO2 6CO 19
Rajbansi Nagar, Patna - BSPCB	Carbon monoxide	40	NO2 31SO2 10PM2.5 12PM10 19OZONE 28NH3 3
DRM Office Danapur, Patna - BSPCB	Carbon monoxide	38	NO2 16PM2.5 22PM10 17SO2 6OZONE 15NH3 8

Araria

Station	Highest	Value	Other readings
Kharahiya Basti, Araria - BSPCB	Fine dust (PM2.5)	76	NH3 4PM10 59OZONE 40CO 24NO2 14SO2 20

Munger

Station	Highest	Value	Other readings
Town Hall, Munger - BSPCB	Ozone	74	CO 42SO2 46NO2 7NH3 3

Siwan

Station	Highest	Value	Other readings
Chitragupta Nagar, Siwan - BSPCB	Carbon monoxide	66	NH3 1SO2 8PM10 46OZONE 7PM2.5 32NO2 2

Begusarai

Station	Highest	Value	Other readings
Lohiyanagar, Begusarai - BSPCB	Carbon monoxide	60	NH3 3SO2 12OZONE 41NO2 9

Motihari

Station	Highest	Value	Other readings
Gandak Colony, Motihari - BSPCB	Ozone	55	PM10 12NH3 1NO2 3PM2.5 13SO2 3CO 13

Bhagalpur

Station	Highest	Value	Other readings
Mayaganj, Bhagalpur - BSPCB	Carbon monoxide	53	OZONE 11
DM Office_Kachari Chowk, Bhagalpur - BSPCB	Coarse dust (PM10)	37	NH3 4CO 29NO2 21SO2 23OZONE 19

Katihar

Station	Highest	Value	Other readings
Mirchaibari, Katihar - BSPCB	Carbon monoxide	52	SO2 13PM10 23NH3 1PM2.5 24NO2 9OZONE 27

Kishanganj

Station	Highest	Value	Other readings
SDM Office_Khagra, Kishanganj - BSPCB	Fine dust (PM2.5)	50	NH3 3SO2 9OZONE 33PM10 44NO2 7CO 41

Saharsa

Station	Highest	Value	Other readings
Police Line, Saharsa - BSPCB	Fine dust (PM2.5)	48	NH3 4SO2 16PM10 43CO 36OZONE 19NO2 7

Manguraha

Station	Highest	Value	Other readings
Forest Rest House, Manguraha - BSPCB	Ozone	45	CO 31

Rajgir

Station	Highest	Value	Other readings
Dangi Tola, Rajgir - BSPCB	Carbon monoxide	42	PM10 20NO2 14OZONE 15SO2 3NH3 3PM2.5 24

Arrah

Station	Highest	Value	Other readings
New DM Office, Arrah - BSPCB	Carbon monoxide	41	OZONE 13NO2 7NH3 2SO2 5

Bettiah

Station	Highest	Value	Other readings
Kamalnath Nagar, Bettiah - BSPCB	Carbon monoxide	34	NO2 28OZONE 16PM2.5 23NH3 3PM10 21SO2 17

Muzaffarpur

Station	Highest	Value	Other readings
MIT-Daudpur Kothi, Muzaffarpur - BSPCB	Ozone	32	PM10 20NO2 2PM2.5 15SO2 14NH3 1CO 18
Buddha Colony, Muzaffarpur - BSPCB	Ozone	23	PM10 14NO2 9SO2 4PM2.5 6NH3 10CO 15

Hajipur

Station	Highest	Value	Other readings
Industrial Area, Hajipur - BSPCB	Nitrogen dioxide	28	PM2.5 14PM10 20CO 20OZONE 22NH3 10SO2 4

Sasaram

Station	Highest	Value	Other readings
Dada Peer, Sasaram - BSPCB	Coarse dust (PM10)	24	PM2.5 15NH3 2CO 19NO2 7SO2 7

Bihar Sharif

Station	Highest	Value	Other readings
D M Colony, Bihar Sharif - BSPCB	Coarse dust (PM10)	17	NH3 3OZONE 2CO 12PM2.5 11NO2 10SO2 13

Samastipur

Station	Highest	Value	Other readings
DM Office_Kasipur, Samastipur - BSPCB	Carbon monoxide	12	OZONE 6