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Air quality near Walker Ranch, Pine Needle Notch, Boulder

Air quality index (AQI) and PM2.5 air pollution near Walker Ranch, Pine Needle Notch, Boulder

Last update at 17:00, Apr 29 (local time)

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Data source: PurpleAir

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#	city	US AQI
1	Fuquay-Varina, North Carolina	151
2	Arroyo Grande, California	108
3	Nipomo, California	95
4	Orcutt, California	83
5	New York City, New York	59
6	Cary, North Carolina	55
7	Corpus Christi, Texas	55
8	Trenton, New Jersey	54
9	Tampa, Florida	53
10	Wilmington, Delaware	51

17:00, Apr 29 (local time)

#	station	US AQI
1	Boulder Reservoir	45
2	Miami Way	27
3	Norlin Library	22
4	10th Street	21
5	Boulder - CU - 2102 Athens St.	21
6	Grove Street	21
7	Shining Mountain Waldorf School	21
8	South 42nd Street	21
9	Winds II, Valmont & 29th	21
10	700 Walnut Street	20

17:00, Apr 29 (local time)

US AQI

live AQI index
Good

Air pollution level	Air quality index	Main pollutant
Good	19 US AQI	PM2.5

Pollutants		Concentration
PM2.5		4.6µg/m³

	Enjoy outdoor activities
	Open your windows to bring clean, fresh air indoors

Day	Pollution level	Weather	Temperature	Wind
Friday, Apr 26	Good 3 AQI US
Saturday, Apr 27	Good 8 AQI US
Sunday, Apr 28	Good 11 AQI US
Sunday, Apr 28	Good 12 AQI US		57.2° 37.4°	11.2 mp/h
Today	Good 19 AQI US		60.8° 41°	24.6 mp/h
Tuesday, Apr 30	Good 15 AQI US	90%	59° 39.2°	8.9 mp/h
Wednesday, May 1	Good 8 AQI US	90%	50° 32°	17.9 mp/h
Thursday, May 2	Good 6 AQI US	30%	62.6° 33.8°	15.7 mp/h
Friday, May 3	Good 9 AQI US	60%	57.2° 33.8°	6.7 mp/h
Saturday, May 4	Good 11 AQI US	60%	69.8° 41°	6.7 mp/h
Sunday, May 5	Good 22 AQI US	90%	64.4° 39.2°	35.8 mp/h