ID: 2385

AQSQID: 060210003

Site Name: Willows-Colusa

Added: April 21, 2020, 6:24 p.m.

Updated: Jan. 21, 2021, 9:31 a.m.

Location: Willows (E Co Rd 49 1/2), CA

Reporting: True, Located: True

Current AQI: 68.0

Willows (E Co Rd 49 1/2) CA, US: 39.53387, -122.190834

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
Jan. 21, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 25.7 μg/m3 (24) 20.0 μg/m3 (68) 68.0
 
Jan. 21, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 26.6 μg/m3 (25) 16.0 μg/m3 (60) 60.0
 
Jan. 21, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 28.9 μg/m3 (27) 16.0 μg/m3 (60) 60.0
 
Jan. 21, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 62.5 μg/m3 (55) 23.0 μg/m3 (74) 74.0
 
Jan. 21, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 69.4 μg/m3 (59) 32.0 μg/m3 (93) 93.0
 
Jan. 21, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 56.5 μg/m3 (52) 27.0 μg/m3 (83) 83.0
 
Jan. 21, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 38.7 μg/m3 (36) 8.0 μg/m3 (34) 36.0
 
Jan. 21, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 33.1 μg/m3 (31) 17.0 μg/m3 (62) 62.0
 
Jan. 21, 2021, midnight N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 24.1 μg/m3 (23) 6.0 μg/m3 (25) 35.0
 
Jan. 20, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 17.3 μg/m3 (17) 1.0 μg/m3 (5) 35.0
 
Jan. 20, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 14.2 μg/m3 (14) 1.0 μg/m3 (5) 35.0
 
Jan. 20, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 25.3 μg/m3 (24) 4.0 μg/m3 (17) 34.0
 
Jan. 20, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 43.6 μg/m3 (41) 15.0 μg/m3 (58) 58.0
 
Jan. 20, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 20.5 μg/m3 (19) 3.0 μg/m3 (13) 32.0
 
Jan. 20, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 13.1 μg/m3 (13) 2.0 μg/m3 (9) 29.0
 
Jan. 20, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 21.9 μg/m3 (21) 3.0 μg/m3 (13) 26.0
 
Jan. 20, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 13.4 μg/m3 (13) 4.0 μg/m3 (17) 22.0
 
Jan. 20, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 15.8 μg/m3 (15) 4.0 μg/m3 (17) 21.0
 
Jan. 20, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 12.2 μg/m3 (12) 2.0 μg/m3 (9) 24.0
 
Jan. 20, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 12.3 μg/m3 (12) 2.0 μg/m3 (9) 25.0
 
Jan. 20, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 14.1 μg/m3 (14) 2.0 μg/m3 (9) 14.0
 
Jan. 20, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 14.7 μg/m3 (14) 2.0 μg/m3 (9) 26.0
 
Jan. 20, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 19.0 μg/m3 (18) 4.0 μg/m3 (17) 26.0
 
Jan. 20, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 37.6 μg/m3 (35) 8.0 μg/m3 (34) 35.0
 
Jan. 20, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 52.1 μg/m3 (49) 9.0 μg/m3 (38) 49.0
 
Jan. 20, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 75.1 μg/m3 (61) 16.0 μg/m3 (60) 61.0
 
Jan. 20, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 139.7 μg/m3 (93) 21.0 μg/m3 (70) 93.0
 
Jan. 20, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 159.1 μg/m3 (104) 22.0 μg/m3 (72) 104.0
 
Jan. 20, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 19.0 μg/m3 (66) 66.0
 
Jan. 20, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 70.7 μg/m3 (59) 4.0 μg/m3 (17) 59.0
 
Jan. 20, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 20.8 μg/m3 (20) 0.0 μg/m3 (0) 27.0
 
Jan. 20, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 10.3 μg/m3 (10) 1.0 μg/m3 (5) 27.0
 
Jan. 20, 2021, midnight N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 19.9 μg/m3 (19) 2.0 μg/m3 (9) 31.0
 
Jan. 19, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 27.2 μg/m3 (26) 0.0 μg/m3 (0) 32.0
 
Jan. 19, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 14.4 μg/m3 (14) -1.0 μg/m3 (0) 32.0
 
Jan. 19, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 19.1 μg/m3 (18) -1.0 μg/m3 (0) 31.0
 
Jan. 19, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 19.8 μg/m3 (19) 1.0 μg/m3 (5) 31.0
 
Jan. 19, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 17.0 μg/m3 (16) 2.0 μg/m3 (9) 30.0
 
Jan. 19, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 32.1 μg/m3 (30) 2.0 μg/m3 (9) 30.0
 
Jan. 19, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 24.6 μg/m3 (23) 3.0 μg/m3 (13) 30.0
 
Jan. 19, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 17.8 μg/m3 (17) 0.0 μg/m3 (0) 29.0
 
Jan. 19, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 1.1 μg/m3 (2) 0.0 μg/m3 (0) 29.0
 
Jan. 19, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A -0.4 μg/m3 (0) 2.0 μg/m3 (9) 29.0
 
Jan. 19, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 0.9 μg/m3 (1) 2.0 μg/m3 (9) 29.0
 
Jan. 19, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.1 μg/m3 (2) 2.0 μg/m3 (9) 9.0
 
Jan. 19, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 0.0 μg/m3 (0) 0.0 μg/m3 (0) 30.0
 
Jan. 19, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A -0.6 μg/m3 (0) 2.0 μg/m3 (9) 30.0
 
Jan. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 1.1 μg/m3 (2) 3.0 μg/m3 (13) 30.0
 
Jan. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.7 μg/m3 (3) 0.0 μg/m3 (0) 32.0
 
Jan. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 4.9 μg/m3 (5) -1.0 μg/m3 (0) 33.0
 
Jan. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 7.1 μg/m3 (7) 0.0 μg/m3 (0) 33.0
 
Jan. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.8 μg/m3 (5) 2.0 μg/m3 (9) 34.0
 
Jan. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.0 μg/m3 (4) 1.0 μg/m3 (5) 34.0
 
Jan. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 35.0
 
Jan. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 5.3 μg/m3 (5) -2.0 μg/m3 (0) 34.0
 
Jan. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 7.1 μg/m3 (7) 0.0 μg/m3 (0) 35.0
 
Jan. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 27.1 μg/m3 (26) -1.0 μg/m3 (0) 37.0
 
Jan. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 15.7 μg/m3 (15) -1.0 μg/m3 (0) 37.0
 
Jan. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 12.4 μg/m3 (12) 1.0 μg/m3 (5) 37.0
 
Jan. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 20.9 μg/m3 (20) -2.0 μg/m3 (0) 37.0
 
Jan. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 28.2 μg/m3 (27) 1.0 μg/m3 (5) 37.0
 
Jan. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 19.2 μg/m3 (18) 3.0 μg/m3 (13) 37.0
 
Jan. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 12.1 μg/m3 (12) 3.0 μg/m3 (13) 36.0
 
Jan. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 21.7 μg/m3 (21) 1.0 μg/m3 (5) 37.0
 
Jan. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 5.9 μg/m3 (6) 1.0 μg/m3 (5) 36.0
 
Jan. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 3.3 μg/m3 (4) 1.0 μg/m3 (5) 35.0
 
Jan. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.6 μg/m3 (5) 3.0 μg/m3 (13) 34.0
 
Jan. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.4 μg/m3 (5) 3.0 μg/m3 (13) 34.0
 
Jan. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.1 μg/m3 (2) 0.0 μg/m3 (0) 2.0
 
Jan. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 7.6 μg/m3 (8) -2.0 μg/m3 (0) 35.0
 
Jan. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 14.4 μg/m3 (14) -2.0 μg/m3 (0) 35.0
 
Jan. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 1.5 μg/m3 (2) 0.0 μg/m3 (0) 34.0
 
Jan. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 1.5 μg/m3 (2) 1.0 μg/m3 (5) 34.0
 
Jan. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.2 μg/m3 (3) -1.0 μg/m3 (0) 33.0
 
Jan. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 3.2 μg/m3 (3) -1.0 μg/m3 (0) 33.0
 
Jan. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 4.2 μg/m3 (4) 2.0 μg/m3 (9) 34.0
 
Jan. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 8.1 μg/m3 (8) 2.0 μg/m3 (9) 33.0
 
Jan. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.9 μg/m3 (8) 0.0 μg/m3 (0) 29.0
 
Jan. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.1 μg/m3 (2) 2.0 μg/m3 (9) 29.0
 
Jan. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 3.5 μg/m3 (4) -1.0 μg/m3 (0) 30.0
 
Jan. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.1 μg/m3 (2) N/A 32.0
 
Jan. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 2.8 μg/m3 (3) -3.0 μg/m3 (0) 34.0
 
Jan. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 3.4 μg/m3 (4) -2.0 μg/m3 (0) 34.0
 
Jan. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 2.6 μg/m3 (3) 0.0 μg/m3 (0) 34.0
 
Jan. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 3.4 μg/m3 (4) 2.0 μg/m3 (9) 32.0
 
Jan. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 5.5 μg/m3 (6) -1.0 μg/m3 (0) 31.0
 
Jan. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.5 μg/m3 (3) 0.0 μg/m3 (0) 29.0
 
Jan. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 0.4 μg/m3 (1) 2.0 μg/m3 (9) 29.0
 
Jan. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 2.8 μg/m3 (3) 3.0 μg/m3 (13) 26.0
 
Jan. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 4.9 μg/m3 (5) 3.0 μg/m3 (13) 28.0
 
Jan. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 4.6 μg/m3 (5) 1.0 μg/m3 (5) 27.0
 
Jan. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.1 μg/m3 (2) 0.0 μg/m3 (0) 29.0
 
Jan. 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 0.0 μg/m3 (0) 0.0
Jan. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 2.5 μg/m3 (3) 2.0 μg/m3 (9) 28.0
 
Jan. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 2.8 μg/m3 (3) 1.0 μg/m3 (5) 26.0
 
Jan. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 2.3 μg/m3 (3) -1.0 μg/m3 (0) 26.0
 
Jan. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 1.3 μg/m3 (2) -1.0 μg/m3 (0) 27.0
 
Jan. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 1.6 μg/m3 (2) -1.0 μg/m3 (0) 31.0
 
Jan. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.7 μg/m3 (3) 0.0 μg/m3 (0) 30.0
 
Jan. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 4.1 μg/m3 (4) 1.0 μg/m3 (5) 30.0
 
Jan. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 5.6 μg/m3 (6) -1.0 μg/m3 (0) 27.0
 
Jan. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 9.5 μg/m3 (9) N/A 27.0
 
Jan. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 10.3 μg/m3 (10) 0.0 μg/m3 (0) 28.0
 
Jan. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 2.8 μg/m3 (3) 2.0 μg/m3 (9) 27.0
 
Jan. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 2.6 μg/m3 (3) 0.0 μg/m3 (0) 32.0
 
Jan. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 0.8 μg/m3 (1) -1.0 μg/m3 (0) 34.0
 
Jan. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 5.1 μg/m3 (5) 0.0 μg/m3 (0) 33.0
 
Jan. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 7.8 μg/m3 (8) 2.0 μg/m3 (9) 33.0
 
Jan. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 1.9 μg/m3 (2) 2.0 μg/m3 (9) 32.0
 
Jan. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 2.8 μg/m3 (3) 4.0 μg/m3 (17) 29.0
 
Jan. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 3.0 μg/m3 (3) 5.0 μg/m3 (21) 26.0
 
Jan. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A -0.3 μg/m3 (0) 2.0 μg/m3 (9) 24.0
 
Jan. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 2.7 μg/m3 (3) 2.0 μg/m3 (9) 22.0
 
Jan. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 5.4 μg/m3 (5) 2.0 μg/m3 (9) 21.0
 
Jan. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 3.7 μg/m3 (4) 2.0 μg/m3 (9) 20.0
 
Jan. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 2.7 μg/m3 (3) 3.0 μg/m3 (13) 18.0
 
Jan. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.5 μg/m3 (3) 2.0 μg/m3 (9) 9.0
 
Jan. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 5.5 μg/m3 (6) 3.0 μg/m3 (13) 13.0
 
Jan. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 8.7 μg/m3 (9) 7.0 μg/m3 (30) 30.0
 
Jan. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 6.7 μg/m3 (7) 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 10.1 μg/m3 (10) 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 6.0 μg/m3 (6) 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 18.2 μg/m3 (17) 9.0 μg/m3 (38) 38.0
 
Jan. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 11.1 μg/m3 (11) 12.0 μg/m3 (50) 50.0
 
Jan. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 21.5 μg/m3 (20) 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 24.1 μg/m3 (23) 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 22.0 μg/m3 (21) 13.0 μg/m3 (53) 53.0
 
Jan. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 19.2 μg/m3 (18) 11.0 μg/m3 (46) 46.0
 
Jan. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 20.3 μg/m3 (19) 13.0 μg/m3 (53) 53.0
 
Jan. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 21.1 μg/m3 (20) 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A 25.6 μg/m3 (24) 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 26.5 μg/m3 (25) 19.0 μg/m3 (66) 66.0
 
Jan. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 25.0 μg/m3 (24) 19.0 μg/m3 (66) 66.0
 
Jan. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 26.1 μg/m3 (25) 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 28.7 μg/m3 (27) 22.0 μg/m3 (72) 72.0
 
Jan. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 18.9 μg/m3 (18) 16.0 μg/m3 (60) 60.0
 
Jan. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 12.0 μg/m3 (12) 13.0 μg/m3 (53) 53.0
 
Jan. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 16.0 μg/m3 (15) 13.0 μg/m3 (53) 53.0
 
Jan. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 10.6 μg/m3 (10) 14.0 μg/m3 (55) 55.0
 
Jan. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 10.1 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.9 μg/m3 (12) 5.0 μg/m3 (21) 21.0
 
Jan. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 11.4 μg/m3 (11) 9.0 μg/m3 (38) 38.0
 
Jan. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 9.0 μg/m3 (9) 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 11.8 μg/m3 (11) 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 12.5 μg/m3 (12) 8.0 μg/m3 (34) 34.0
 
Jan. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 13.1 μg/m3 (13) 10.0 μg/m3 (42) 42.0
 
Jan. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 0.0 ppb (0) N/A 25.6 μg/m3 (24) 15.0 μg/m3 (58) 58.0
 
Jan. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 26.4 μg/m3 (25) 26.0 μg/m3 (81) 81.0
 
Jan. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 23.8 μg/m3 (23) 17.0 μg/m3 (62) 62.0
 
Jan. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 35.3 μg/m3 (33) 27.0 μg/m3 (83) 83.0
 
Jan. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 31.9 μg/m3 (30) 14.0 μg/m3 (55) 55.0
 
Jan. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 8.6 μg/m3 (8) 3.0 μg/m3 (13) 19.0
 
Jan. 15, 2021, midnight N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 15.2 μg/m3 (15) 7.0 μg/m3 (30) 30.0
 
Jan. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 12.3 μg/m3 (12) 6.0 μg/m3 (25) 37.0
 
Jan. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 7.5 μg/m3 (7) -1.0 μg/m3 (0) 29.0
 
Jan. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 2.3 μg/m3 (3) -1.0 μg/m3 (0) 28.0
 
Jan. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 25.0
 
Jan. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 4.4 μg/m3 (5) 0.0 μg/m3 (0) 23.0
 
Jan. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 3.3 μg/m3 (4) 0.0 μg/m3 (0) 20.0
 
Jan. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 13.0
 
Jan. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 8.4 μg/m3 (8) 3.0 μg/m3 (13) 13.0
 
Jan. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 9.8 μg/m3 (10) 5.0 μg/m3 (21) 21.0
 
Jan. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 3.9 μg/m3 (4) 2.0 μg/m3 (9) 11.0
 
Jan. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 3.8 μg/m3 (4) 1.0 μg/m3 (5) 11.0
 
Jan. 14, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.7 μg/m3 (3) 3.0 μg/m3 (13) 13.0
 
Jan. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 3.0 μg/m3 (3) 3.0 μg/m3 (13) 14.0
 
Jan. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 5.6 μg/m3 (6) 3.0 μg/m3 (13) 13.0
 
Jan. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 8.2 μg/m3 (8) 9.0 μg/m3 (38) 38.0