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Air quality in Boulder

Air quality index (AQI) and PM2.5 air pollution in Boulder

Last update at 16:00, Apr 29 (local time)

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#	city	US AQI
1	Nipomo, California	90
2	Corpus Christi, Texas	79
3	Orcutt, California	75
4	Fuquay-Varina, North Carolina	61
5	Green Bay, Wisconsin	60
6	Trenton, New Jersey	56
7	Durham, North Carolina	55
8	New York City, New York	55
9	Williamsburg, Virginia	54
10	Wilmington, Delaware	53

16:00, Apr 29 (local time)

#	station	US AQI
1	Boulder Reservoir	41
2	Norlin Library	23
3	Grove Street	22
4	Winds II, Valmont & 29th	22
5	10th Street	21
6	Boulder - CU - 2102 Athens St.	21
7	Shining Mountain Waldorf School	21
8	South 42nd Street	21
9	700 Walnut Street	20
10	Canyon Pointe Park	20

16:00, 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

✓

PM2.5 concentration in Boulder air currently meets the WHO annual air quality guideline value

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Day	Pollution level	Weather	Temperature	Wind
Friday, Apr 26	Good 37 AQI US		44.6° 35.6°	6.7 mp/h
Saturday, Apr 27	Good 28 AQI US		59° 33.8°	11.2 mp/h
Sunday, Apr 28	Good 30 AQI US		64.4° 42.8°	13.4 mp/h
Today	Good 19 AQI US		64.4° 42.8°	13.4 mp/h
Tuesday, Apr 30	Good 13 AQI US		68° 46.4°	26.8 mp/h
Wednesday, May 1	Good 15 AQI US	80%	64.4° 42.8°	13.4 mp/h
Thursday, May 2	Good 8 AQI US		55.4° 39.2°	20.1 mp/h
Friday, May 3	Good 6 AQI US	30%	68° 39.2°	17.9 mp/h
Saturday, May 4	Good 9 AQI US	60%	64.4° 39.2°	8.9 mp/h
Sunday, May 5	Good 11 AQI US	50%	75.2° 46.4°	8.9 mp/h
Monday, May 6	Good 23 AQI US	90%	71.6° 44.6°	38 mp/h