ID: 2385

AQSQID: 060210003

Site Name: Willows-Colusa

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

Updated: Oct. 19, 2021, 11:03 a.m.

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

Reporting: True, Located: True

Current AQI: 25.0

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
Oct. 19, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 13.0 μg/m3 (13) 6.0 μg/m3 (25) 25.0
 
Oct. 19, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 17.0 μg/m3 (16) 11.0 μg/m3 (46) 46.0
 
Oct. 19, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 20.0 μg/m3 (19) 3.0 μg/m3 (13) 19.0
 
Oct. 19, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 22.0 μg/m3 (21) 2.0 μg/m3 (9) 21.0
 
Oct. 19, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 14.0 ppb (13) N/A 19.0 μg/m3 (18) 2.0 μg/m3 (9) 18.0
 
Oct. 19, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 21.0 μg/m3 (20) 4.0 μg/m3 (17) 20.0
 
Oct. 19, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 74.0 μg/m3 (61) 21.0 μg/m3 (70) 70.0
 
Oct. 19, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 96.0 μg/m3 (72) 8.0 μg/m3 (34) 72.0
 
Oct. 19, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 23.0 μg/m3 (22) 2.0 μg/m3 (9) 31.0
 
Oct. 19, 2021, midnight N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 32.0 μg/m3 (30) 1.0 μg/m3 (5) 37.0
 
Oct. 18, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 46.0 μg/m3 (43) 2.0 μg/m3 (9) 43.0
 
Oct. 18, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 16.0 μg/m3 (15) 1.0 μg/m3 (5) 38.0
 
Oct. 18, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 11.0 μg/m3 (11) 1.0 μg/m3 (5) 37.0
 
Oct. 18, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 10.0 μg/m3 (10) -1.0 μg/m3 (0) 35.0
 
Oct. 18, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 6.0 μg/m3 (6) -3.0 μg/m3 (0) 34.0
 
Oct. 18, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 6.0 μg/m3 (6) -2.0 μg/m3 (0) 31.0
 
Oct. 18, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 10.0 μg/m3 (10) 0.0 μg/m3 (0) 25.0
 
Oct. 18, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 11.0 μg/m3 (11) 0.0 μg/m3 (0) 16.0
 
Oct. 18, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 8.0 μg/m3 (8) -2.0 μg/m3 (0) 8.0
 
Oct. 18, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 5.0 μg/m3 (5) -1.0 μg/m3 (0) 5.0
 
Oct. 18, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 0.0 μg/m3 (0) 0.0 μg/m3 (0) 10.0
 
Oct. 18, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 0.0 μg/m3 (0) 1.0 μg/m3 (5) 5.0
 
Oct. 18, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 6.0
 
Oct. 18, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 12.0 ppb (12) N/A 3.0 μg/m3 (3) 0.0 μg/m3 (0) 12.0
 
Oct. 18, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 5.0 μg/m3 (5) 3.0 μg/m3 (13) 13.0
 
Oct. 18, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 6.0 μg/m3 (6) 2.0 μg/m3 (9) 14.0
 
Oct. 18, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 5.0 μg/m3 (5) -1.0 μg/m3 (0) 23.0
 
Oct. 18, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (5) 26.0
 
Oct. 18, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 31.0
 
Oct. 18, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (5) 30.0
 
Oct. 18, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (9) 26.0
 
Oct. 18, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 8.0 μg/m3 (8) 1.0 μg/m3 (5) 30.0
 
Oct. 18, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 12.0 μg/m3 (12) 0.0 μg/m3 (0) 30.0
 
Oct. 18, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 51.0 μg/m3 (48) 4.0 μg/m3 (17) 48.0
 
Oct. 17, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 46.0 μg/m3 (43) 7.0 μg/m3 (30) 43.0
 
Oct. 17, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 98.0 μg/m3 (73) 8.0 μg/m3 (34) 73.0
 
Oct. 17, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A 61.0 μg/m3 (54) 10.0 μg/m3 (42) 54.0
 
Oct. 17, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A 49.0 μg/m3 (46) 8.0 μg/m3 (34) 46.0
 
Oct. 17, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A 56.0 μg/m3 (52) 3.0 μg/m3 (13) 52.0
 
Oct. 17, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 67.0 μg/m3 (57) 3.0 μg/m3 (13) 57.0
 
Oct. 17, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A 71.0 μg/m3 (59) 6.0 μg/m3 (25) 59.0
 
Oct. 17, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 59.0 μg/m3 (53) 9.0 μg/m3 (38) 53.0
 
Oct. 17, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 47.0 μg/m3 (44) 9.0 μg/m3 (38) 44.0
 
Oct. 17, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 44.0 μg/m3 (41) 7.0 μg/m3 (30) 41.0
 
Oct. 17, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 38.0 μg/m3 (36) 8.0 μg/m3 (34) 36.0
 
Oct. 17, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 40.0 μg/m3 (38) 4.0 μg/m3 (17) 38.0
 
Oct. 17, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 49.0 μg/m3 (46) 6.0 μg/m3 (25) 46.0
 
Oct. 17, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 49.0 μg/m3 (46) 10.0 μg/m3 (42) 46.0
 
Oct. 17, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 48.0 μg/m3 (45) 12.0 μg/m3 (50) 50.0
 
Oct. 17, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 59.0 μg/m3 (53) 18.0 μg/m3 (64) 64.0
 
Oct. 17, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 61.0 μg/m3 (54) 9.0 μg/m3 (38) 54.0
 
Oct. 17, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 70.0 μg/m3 (59) 13.0 μg/m3 (53) 59.0
 
Oct. 17, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 69.0 μg/m3 (58) 7.0 μg/m3 (30) 58.0
 
Oct. 17, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 82.0 μg/m3 (65) 15.0 μg/m3 (58) 65.0
 
Oct. 17, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 27.0 ppb (25) N/A 89.0 μg/m3 (68) 9.0 μg/m3 (38) 68.0
 
Oct. 17, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 87.0 μg/m3 (67) 9.0 μg/m3 (38) 67.0
 
Oct. 17, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 17.0 μg/m3 (62) 62.0
 
Oct. 17, 2021, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 33.0 μg/m3 (31) 3.0 μg/m3 (13) 46.0
 
Oct. 16, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A 30.0 μg/m3 (28) 0.0 μg/m3 (0) 46.0
 
Oct. 16, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A 87.0 μg/m3 (67) 59.0 μg/m3 (153) 153.0
 
Oct. 16, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A 54.0 μg/m3 (50) 23.0 μg/m3 (74) 74.0
 
Oct. 16, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A 28.0 μg/m3 (26) -1.0 μg/m3 (0) 41.0
 
Oct. 16, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A 24.0 μg/m3 (23) 0.0 μg/m3 (0) 38.0
 
Oct. 16, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 35.0 μg/m3 (33) 1.0 μg/m3 (5) 33.0
 
Oct. 16, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 47.0 μg/m3 (44) 1.0 μg/m3 (5) 44.0
 
Oct. 16, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 30.0 μg/m3 (28) 1.0 μg/m3 (5) 28.0
 
Oct. 16, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 52.0 μg/m3 (49) 4.0 μg/m3 (17) 49.0
 
Oct. 16, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 2.0 ppb (2) N/A 28.0 μg/m3 (26) N/A 26.0
 
Oct. 16, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 18.0 μg/m3 (17) N/A 17.0
 
Oct. 16, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 11.0 μg/m3 (11) 3.0 μg/m3 (13) 13.0
 
Oct. 16, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 15.0 μg/m3 (14) 5.0 μg/m3 (21) 21.0
 
Oct. 16, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 10.0 ppb (10) N/A 20.0 μg/m3 (19) 3.0 μg/m3 (13) 19.0
 
Oct. 16, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 29.0 μg/m3 (27) 3.0 μg/m3 (13) 27.0
 
Oct. 16, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 26.0 μg/m3 (25) 3.0 μg/m3 (13) 25.0
 
Oct. 16, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 31.0 μg/m3 (29) 3.0 μg/m3 (13) 29.0
 
Oct. 16, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 5.0 ppb (5) N/A 41.0 μg/m3 (38) -1.0 μg/m3 (0) 38.0
 
Oct. 16, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 33.0 μg/m3 (31) 2.0 μg/m3 (9) 31.0
 
Oct. 16, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 7.0 ppb (7) N/A 50.0 μg/m3 (47) 7.0 μg/m3 (30) 47.0
 
Oct. 16, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 81.0 μg/m3 (64) 20.0 μg/m3 (68) 68.0
 
Oct. 16, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 81.0 μg/m3 (64) 6.0 μg/m3 (25) 64.0
 
Oct. 16, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 56.0 μg/m3 (52) 7.0 μg/m3 (30) 52.0
 
Oct. 16, 2021, midnight N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 35.0 μg/m3 (33) 3.0 μg/m3 (13) 42.0
 
Oct. 15, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 27.0 μg/m3 (25) 3.0 μg/m3 (13) 42.0
 
Oct. 15, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A 33.0 μg/m3 (31) 4.0 μg/m3 (17) 42.0
 
Oct. 15, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 23.0 μg/m3 (22) 0.0 μg/m3 (0) 39.0
 
Oct. 15, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 26.0 μg/m3 (25) -1.0 μg/m3 (0) 36.0
 
Oct. 15, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 18.0 μg/m3 (17) 0.0 μg/m3 (0) 33.0
 
Oct. 15, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 20.0 μg/m3 (19) -3.0 μg/m3 (0) 26.0
 
Oct. 15, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 20.0 μg/m3 (19) 0.0 μg/m3 (0) 23.0
 
Oct. 15, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 13.0 μg/m3 (13) 3.0 μg/m3 (13) 17.0
 
Oct. 15, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 6.0 ppb (6) N/A 16.0 μg/m3 (15) 1.0 μg/m3 (5) 15.0
 
Oct. 15, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 1.0 ppb (1) N/A 30.0 μg/m3 (28) 2.0 μg/m3 (9) 28.0
 
Oct. 15, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 16.0 μg/m3 (15) 2.0 μg/m3 (9) 15.0
 
Oct. 15, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 9.0 μg/m3 (9) 1.0 μg/m3 (5) 9.0
 
Oct. 15, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 7.0 μg/m3 (7) -2.0 μg/m3 (0) 8.0
 
Oct. 15, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 0.0 μg/m3 (0) 1.0 μg/m3 (5) 16.0
 
Oct. 15, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 2.0 μg/m3 (2) 5.0 μg/m3 (21) 21.0
 
Oct. 15, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 1.0 μg/m3 (1) 3.0 μg/m3 (13) 20.0
 
Oct. 15, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 2.0 μg/m3 (2) 1.0 μg/m3 (5) 22.0
 
Oct. 15, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 2.0 μg/m3 (2) -2.0 μg/m3 (0) 22.0
 
Oct. 15, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 0.0 μg/m3 (0) -1.0 μg/m3 (0) 23.0
 
Oct. 15, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (9) 25.0
 
Oct. 15, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 5.0 μg/m3 (5) 1.0 μg/m3 (5) 26.0
 
Oct. 15, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 17.0 μg/m3 (16) 2.0 μg/m3 (9) 29.0
 
Oct. 15, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 15.0 μg/m3 (14) -2.0 μg/m3 (0) 33.0
 
Oct. 15, 2021, midnight N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 7.0 μg/m3 (7) -3.0 μg/m3 (0) 36.0
 
Oct. 14, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 12.0 μg/m3 (12) -2.0 μg/m3 (0) 37.0
 
Oct. 14, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 12.0 μg/m3 (12) -3.0 μg/m3 (0) 37.0
 
Oct. 14, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A 23.0 μg/m3 (22) -3.0 μg/m3 (0) 36.0
 
Oct. 14, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A 36.0 μg/m3 (34) -1.0 μg/m3 (0) 35.0
 
Oct. 14, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 40.0 μg/m3 (38) -1.0 μg/m3 (0) 38.0
 
Oct. 14, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 58.0 μg/m3 (53) -3.0 μg/m3 (0) 53.0
 
Oct. 14, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 61.0 μg/m3 (54) N/A 54.0
 
Oct. 14, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 33.0 ppb (31) N/A 64.0 μg/m3 (56) -2.0 μg/m3 (0) 56.0
 
Oct. 14, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 56.0 μg/m3 (52) 0.0 μg/m3 (0) 52.0
 
Oct. 14, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 8.0 μg/m3 (8) -2.0 μg/m3 (0) 28.0
 
Oct. 14, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 6.0 μg/m3 (6) -2.0 μg/m3 (0) 27.0
 
Oct. 14, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) -3.0 μg/m3 (0) 8.0
 
Oct. 14, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 13.0 μg/m3 (13) -1.0 μg/m3 (0) 27.0
 
Oct. 14, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 6.0 μg/m3 (6) -1.0 μg/m3 (0) 25.0
 
Oct. 14, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 23.0 ppb (22) N/A 5.0 μg/m3 (5) 0.0 μg/m3 (0) 22.0
 
Oct. 14, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 24.0 ppb (23) N/A 2.0 μg/m3 (2) 2.0 μg/m3 (9) 23.0
 
Oct. 14, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 18.0 μg/m3 (17) 3.0 μg/m3 (13) 18.0
 
Oct. 14, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 13.0 ppb (13) N/A 21.0 μg/m3 (20) 2.0 μg/m3 (9) 20.0
 
Oct. 14, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 22.0 ppb (21) N/A 19.0 μg/m3 (18) 2.0 μg/m3 (9) 21.0
 
Oct. 14, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 18.0 ppb (17) N/A 31.0 μg/m3 (29) 2.0 μg/m3 (9) 29.0
 
Oct. 14, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 39.0 μg/m3 (37) 5.0 μg/m3 (21) 37.0
 
Oct. 14, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 59.0 μg/m3 (53) 9.0 μg/m3 (38) 53.0
 
Oct. 14, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 40.0 μg/m3 (38) 8.0 μg/m3 (34) 38.0
 
Oct. 14, 2021, midnight N/A N/A N/A N/A N/A N/A 42.0 ppb (39) N/A 28.0 μg/m3 (26) 2.0 μg/m3 (9) 39.0
 
Oct. 13, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 30.0 μg/m3 (28) 1.0 μg/m3 (5) 37.0
 
Oct. 13, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A 44.0 μg/m3 (41) 24.0 μg/m3 (77) 77.0
 
Oct. 13, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 39.0 ppb (37) N/A 39.0 μg/m3 (37) 0.0 μg/m3 (0) 37.0
 
Oct. 13, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 26.0 μg/m3 (25) 2.0 μg/m3 (9) 25.0
 
Oct. 13, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A 24.0 μg/m3 (23) 4.0 μg/m3 (17) 23.0
 
Oct. 13, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A 24.0 μg/m3 (23) 2.0 μg/m3 (9) 25.0
 
Oct. 13, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 27.0 μg/m3 (25) 3.0 μg/m3 (13) 25.0
 
Oct. 13, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 17.0 ppb (16) N/A 28.0 μg/m3 (26) 1.0 μg/m3 (5) 26.0
 
Oct. 13, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 18.0 μg/m3 (17) 0.0 μg/m3 (0) 17.0
 
Oct. 13, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 8.0 ppb (8) N/A 25.0 μg/m3 (24) 3.0 μg/m3 (13) 24.0
 
Oct. 13, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 20.0 μg/m3 (19) 0.0 μg/m3 (0) 19.0
 
Oct. 13, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 17.0 μg/m3 (16) 1.0 μg/m3 (5) 16.0
 
Oct. 13, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 3.0 ppb (3) N/A 20.0 μg/m3 (19) 3.0 μg/m3 (13) 19.0
 
Oct. 13, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 4.0 ppb (4) N/A 32.0 μg/m3 (30) 4.0 μg/m3 (17) 30.0
 
Oct. 13, 2021, 9 a.m. N/A N/A N/A N/A N/A N/A 9.0 ppb (9) N/A 17.0 μg/m3 (16) 3.0 μg/m3 (13) 16.0
 
Oct. 13, 2021, 8 a.m. N/A N/A N/A N/A N/A N/A 11.0 ppb (11) N/A 8.0 μg/m3 (8) 3.0 μg/m3 (13) 13.0
 
Oct. 13, 2021, 7 a.m. N/A N/A N/A N/A N/A N/A 15.0 ppb (14) N/A 4.0 μg/m3 (4) 0.0 μg/m3 (0) 14.0
 
Oct. 13, 2021, 6 a.m. N/A N/A N/A N/A N/A N/A 20.0 ppb (19) N/A 6.0 μg/m3 (6) 3.0 μg/m3 (13) 19.0
 
Oct. 13, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A 21.0 ppb (20) N/A 10.0 μg/m3 (10) 7.0 μg/m3 (30) 30.0
 
Oct. 13, 2021, 4 a.m. N/A N/A N/A N/A N/A N/A 19.0 ppb (18) N/A 22.0 μg/m3 (21) 6.0 μg/m3 (25) 25.0
 
Oct. 13, 2021, 3 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 37.0 μg/m3 (35) 6.0 μg/m3 (25) 35.0
 
Oct. 13, 2021, 2 a.m. N/A N/A N/A N/A N/A N/A 16.0 ppb (15) N/A 35.0 μg/m3 (33) -1.0 μg/m3 (0) 33.0
 
Oct. 13, 2021, 1 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 24.0 μg/m3 (23) -1.0 μg/m3 (0) 28.0
 
Oct. 13, 2021, midnight N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 16.0 μg/m3 (15) -2.0 μg/m3 (0) 33.0
 
Oct. 12, 2021, 11 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A 5.0 μg/m3 (5) -3.0 μg/m3 (0) 34.0
 
Oct. 12, 2021, 10 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 9.0 μg/m3 (9) -2.0 μg/m3 (0) 33.0
 
Oct. 12, 2021, 9 p.m. N/A N/A N/A N/A N/A N/A 35.0 ppb (33) N/A 13.0 μg/m3 (13) N/A 33.0
 
Oct. 12, 2021, 8 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 11.0 μg/m3 (11) -3.0 μg/m3 (0) 32.0
 
Oct. 12, 2021, 7 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A 21.0 μg/m3 (20) 2.0 μg/m3 (9) 32.0
 
Oct. 12, 2021, 6 p.m. N/A N/A N/A N/A N/A N/A 32.0 ppb (30) N/A 21.0 μg/m3 (20) 2.0 μg/m3 (9) 30.0
 
Oct. 12, 2021, 5 p.m. N/A N/A N/A N/A N/A N/A 31.0 ppb (29) N/A 23.0 μg/m3 (22) 0.0 μg/m3 (0) 29.0
 
Oct. 12, 2021, 4 p.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 21.0 μg/m3 (20) 0.0 μg/m3 (0) 28.0
 
Oct. 12, 2021, 3 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 6.0 μg/m3 (6) -1.0 μg/m3 (0) 27.0
 
Oct. 12, 2021, 2 p.m. N/A N/A N/A N/A N/A N/A 28.0 ppb (26) N/A 1.0 μg/m3 (1) -1.0 μg/m3 (0) 26.0
 
Oct. 12, 2021, 1 p.m. N/A N/A N/A N/A N/A N/A 29.0 ppb (27) N/A 1.0 μg/m3 (1) -1.0 μg/m3 (0) 27.0
 
Oct. 12, 2021, noon N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (2) 1.0 μg/m3 (5) 5.0
 
Oct. 12, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 0.0 μg/m3 (0) 2.0 μg/m3 (9) 28.0
 
Oct. 12, 2021, 10 a.m. N/A N/A N/A N/A N/A N/A 30.0 ppb (28) N/A 0.0 μg/m3 (0) 2.0 μg/m3 (9) 28.0